Статті в журналах: "Sulfur-containing organic compounds"

1

Levai, Albert. "Dioxirane oxidation of sulfur-containing organic compounds." Arkivoc 2003, no. 14 (July 5, 2003): 14–30. http://dx.doi.org/10.3998/ark.5550190.0004.e03.

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2

Barce Ferro, Criscieli Taynara, Beatriz Fuzinato dos Santos, Caren Daniele Galeano da Silva, George Brand, Beatriz Amaral Lopes da Silva, and Nelson Luís de Campos Domingues. "Review of the Syntheses and Activities of Some Sulfur-Containing Drugs." Current Organic Synthesis 17, no. 3 (June 9, 2020): 192–210. http://dx.doi.org/10.2174/1570179417666200212113412.

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Background: Sulfur-containing compounds represent an important class of chemical compounds due to their wide range of biological and pharmaceutical properties. Moreover, sulfur-containing compounds may be applied in other fields, such as biological, organic, and materials chemistry. Several studies on the activities of sulfur compounds have already proven their anti-inflammatory properties and use to treat diseases, such as Alzheimer’s, Parkinson’s, and HIV. Moreover, examples of sulfur-containing compounds include dapsone, quetiapine, penicillin, probucol, and nelfinavir, which are important drugs with known activities. Objective: This review will focus on the synthesis and application of some sulfur-containing compounds used to treat several diseases, as well as promising new drug candidates. Results: Due to the variety of compounds containing C-S bonds, we have reviewed the different synthetic routes used toward the synthesis of sulfur-containing drugs and other compounds.

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3

OKAZAKI, Renji. "Multiple-bond organic compounds containing sulfur and selenium." NIPPON KAGAKU KAISHI, no. 7 (1987): 1142–51. http://dx.doi.org/10.1246/nikkashi.1987.1142.

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4

Oae, Shigeru. "Small Ring Compounds Containing Sulfur Atoms." HETEROCYCLES 37, no. 2 (1994): 1359. http://dx.doi.org/10.3987/rev-93-sr12.

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5

Lukovtsev, V. P., N. V. Lukovtseva, and V. A. Semenova. "Electrochemical Test System for Analysis of Sulfur-Containing Organic Substances." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 82 (2019): 88–95. http://dx.doi.org/10.18698/1812-3368-2019-1-88-95.

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The paper discusses selection of a set of metals for an electrochemical test system used for the detection of sulfur-containing organic substances. Analytical studies of organic sulfur compounds are very important since these compounds are widely used in medicine, biology, oil refining industry, etc. Quantitative determination and identification of sulfur-containing substances is essential for solving environmental problems. The electrochemical test system for analysis of organic substances is a solution containing a set of cations of various metals that have the ability to form complex compounds with analytes. Thereby, a single electrode can be used to carry out electrochemical multisensory analysis because metal cations play the role of sensors. Thus, there is no need to use a set of several working (indicator) electrodes, the number of which determines the number of informative parameters. Since sets of metals for test systems may slightly differ from each other, we need to select an optimal set for a specific problem. According to the study results, a set of metals for sulfur-containing organic substances consists of zinc, gallium and copper. The test system composed of these metals gives reliable results of electroanalytical determination of organic compounds of this class. The expediency of using such a test system is confirmed by comparative estimation of the Euclidean distances between the vector representations of the analytes and sulfur-containing organic compounds presented in the previously created database. Software for experimental data processing, visualization, and comparative analysis of the vector representations and the database components is developed.

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6

Yang, Yanli, and Qiaojing Zhao. "Analysis of aromatic hydrocarbon in medium- to high-sulfur coals from Fenxi, Shanxi Province." World Journal of Engineering 15, no. 6 (December 3, 2018): 786–91. http://dx.doi.org/10.1108/wje-07-2017-0179.

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Purpose This study aims to investigate the compositional characteristics of aromatic hydrocarbons extracted from coals and to describe how the sulfur content influences the properties of coals and whether widely accepted maturity parameters are suitable for medium- to high-sulfur coal. Design/methodology/approach Four samples of medium- to high-sulfur coal were obtained from Fenxi, Shanxi Province, and studied using gas chromatography and gas chromatography–mass spectrometry (GC-MS). Findings The GC-MS results showed that there were five series of compounds were identified in the aromatic fractions: naphthalenes, phenanthrenes, oxygen-containing compounds, biphenyls and sulfur-containing compounds. The substituent group was mainly methyl. The content of dibenzothiophenes was high, which was attributed to their high thermodynamic stability. The presence of sulfur reduced the content of oxygen-containing compounds. A depositional environment that facilitated the formation of organic sulfur compounds led to a higher content of naphthalenes. Originality/value The development of methods for removing organic sulfur compounds would benefit from a study of their nature, which would be important for improving the use of coal.

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7

Tang, Junlei, Yuxin Hu, Zhongzhi Han, Hu Wang, Yuanqiang Zhu, Yuan Wang, Zhen Nie, and Yingying Wang. "Experimental and Theoretical Study on the Synergistic Inhibition Effect of Pyridine Derivatives and Sulfur-Containing Compounds on the Corrosion of Carbon Steel in CO2-Saturated 3.5 wt.% NaCl Solution." Molecules 23, no. 12 (December 11, 2018): 3270. http://dx.doi.org/10.3390/molecules23123270.

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The corrosion inhibition performance of pyridine derivatives (4-methylpyridine and its quaternary ammonium salts) and sulfur-containing compounds (thiourea and mercaptoethanol) with different molar ratios on carbon steel in CO2-saturated 3.5 wt.% NaCl solution was investigated by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy, and scanning electron microscopy. The synergistic corrosion inhibition mechanism of mixed inhibitors was elucidated by the theoretical calculation and simulation. The molecules of pyridine derivative compounds with a larger volume has priority to adsorb on the metal surface, while the molecules of sulfur-containing compounds with a smaller volume fill in vacancies. A dense adsorption film would be formed when 4-PQ and sulfur-containing compounds are added at a proper mole ratio.

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8

Singer, Eris, and H. J. Möckel. "RPLC Retention of Oxygen Containing Non-Ionic Organic Sulfur Compounds." Journal of Liquid Chromatography 13, no. 8 (April 1990): 1499–516. http://dx.doi.org/10.1080/01483919008048972.

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9

Miyazawa, Yamato, Kenji Kawaguchi, Ryo Katsuta, Tomoo Nukada, and Ken Ishigami. "Studies on analogs of DAMASCENOLIDETM: Part 4. Synthesis and odor evaluation of sulfur-containing analogs of DAMASCENOLIDETM." Bioscience, Biotechnology, and Biochemistry 85, no. 6 (March 4, 2021): 1357–63. http://dx.doi.org/10.1093/bbb/zbab032.

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ABSTRACT DAMASCENOLIDETM [1, 4-(4-methylpent-3-en-1-yl)furan-2(5H)-one], which is isolated from damask rose, is a useful aroma compound with a citrus-like odor. We have previously reported on the synthesis and odor properties of 34 analogs of 1 as part of our new aroma compound development project. In order to develop better aroma compounds and to gather more information on structure–odor relationships, 6 novel sulfur-containing analogs of 1 were synthesized. Odor evaluation revealed that their odors differed significantly from those of the corresponding sulfur-free compounds. The introduction of a sulfur atom does not necessarily result in a sulfur-like odor. In particular, the 2(5H)-thiophenone analogs gave waxy, oily, and lactone-like odors that are uncharacteristic of sulfur-containing compounds. In many synthesized analogs, the introduction of a sulfur atom led to an increase in odor intensity, as expected.

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10

Zhao, Y., A. G. Hallar, and L. R. Mazzoleni. "Atmospheric organic matter in clouds: exact masses and molecular formula identification using ultrahigh resolution FT-ICR mass spectrometry." Atmospheric Chemistry and Physics Discussions 13, no. 8 (August 7, 2013): 20561–610. http://dx.doi.org/10.5194/acpd-13-20561-2013.

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Abstract. Clouds alter the composition of atmospheric aerosol by acting as a medium for interactions between gaseous and particulate phase substances. To determine the cloud water atmospheric organic matter (AOM) composition and study the cloud processing of aerosols, two samples of supercooled clouds were collected at Storm Peak Laboratory near Steamboat Spring, Colorado (3220 m a.s.l.). Approximately 3000 molecular formulas were assigned to ultrahigh resolution mass spectra of the samples after using a reverse phase extraction procedure to isolate the AOM components from the cloud water. Nitrogen containing compounds (CHNO compounds), sulfur containing compounds (CHOS and CHNOS compounds) and other oxygen containing compounds (CHO compounds) with molecular weights up to 700 Da were observed. Average oxygen-to-carbon ratios of ~0.6 indicate a slightly more oxidized composition than most water-soluble organic carbon identified in aerosol studies, which may result from aqueous oxidation in the clouds. The AOM composition indicates significant influences from biogenic secondary organic aerosol (SOA) and residential wood combustion. We observed 60% of the cloud water CHO molecular formulas to be identical to SOA samples of α-pinene, β-pinene, d-limonene, and β-caryophyllene ozonolysis. CHNO compounds had the highest number frequency and relative abundances and are associated with residential wood combustion and NOx oxidation. We observed multiple nitrogen atoms in the assigned molecular formulas for the nighttime cloud sample composite indicating the significance of nighttime emissions or NOx oxidation on the AOM composition. Several CHOS and CHNOS compounds with reduced sulfur (in addition to the commonly observed oxidized sulfur containing compounds) were also observed, however further investigation is needed to determine the origin of the reduced sulfur containing compounds. Overall, the molecular composition determined using ultrahigh resolution Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry provides an unambiguous identification of the cloud water organic composition in the Rocky Mountain area which could help to improve the understanding of aqueous phase processes.

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11

Zhao, Y., A. G. Hallar, and L. R. Mazzoleni. "Atmospheric organic matter in clouds: exact masses and molecular formula identification using ultrahigh-resolution FT-ICR mass spectrometry." Atmospheric Chemistry and Physics 13, no. 24 (December 18, 2013): 12343–62. http://dx.doi.org/10.5194/acp-13-12343-2013.

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Abstract. Clouds alter the composition of atmospheric aerosol by acting as a medium for interactions between gas- and particulate-phase substances. To determine the cloud water atmospheric organic matter (AOM) composition and study the cloud processing of aerosols, two samples of supercooled clouds were collected at the Storm Peak Laboratory near Steamboat Springs, Colorado (3220 m a.s.l.). Approximately 3000 molecular formulas were assigned to ultrahigh-resolution mass spectra of the samples after using a reversed-phase extraction procedure to isolate the AOM components from the cloud water. Nitrogen-containing compounds (CHNO compounds), sulfur-containing compounds (CHOS and CHNOS compounds) and other oxygen-containing compounds (CHO compounds) with molecular weights up to 700 Da were observed. Average oxygen-to-carbon ratios of ∼0.6 indicate a slightly more oxidized composition than most water-soluble organic carbon identified in aerosol studies, which may result from aqueous oxidation in the clouds. The AOM composition indicates significant influences from biogenic secondary organic aerosol (SOA) and residential wood combustion. We observed 60% of the cloud water CHO molecular formulas to be identical to SOA samples of α-pinene, β-pinene, d-limonene, and β-caryophyllene ozonolysis. CHNO compounds had the highest number frequency and relative abundances and are associated with residential wood combustion and NOx oxidation. Multiple nitrogen atoms in the assigned molecular formulas for the nighttime cloud sample composite were observed, indicating the significance of nitrate radical reactions on the AOM composition. Several CHOS and CHNOS compounds with reduced sulfur (in addition to the commonly observed oxidized sulfur-containing compounds) were also observed; however further investigation is needed to determine the origin of the reduced sulfur-containing compounds. Overall, the molecular composition determined using ultrahigh-resolution Fourier-transform ion cyclotron resonance (FT-ICR) mass spectrometry provides an unambiguous identification of the cloud water organic anion composition in the Rocky Mountain area that could help to improve the understanding of aqueous-phase processes.

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12

Ditto, Jenna C., Megan He, Tori N. Hass-Mitchell, Samar G. Moussa, Katherine Hayden, Shao-Meng Li, John Liggio, et al. "Atmospheric evolution of emissions from a boreal forest fire: the formation of highly functionalized oxygen-, nitrogen-, and sulfur-containing organic compounds." Atmospheric Chemistry and Physics 21, no. 1 (January 14, 2021): 255–67. http://dx.doi.org/10.5194/acp-21-255-2021.

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Abstract. Forest fires are major contributors of reactive gas- and particle-phase organic compounds to the atmosphere. We used offline high-resolution tandem mass spectrometry to perform a molecular-level speciation of gas- and particle-phase compounds sampled via aircraft from an evolving boreal forest fire smoke plume in Saskatchewan, Canada. We observed diverse multifunctional compounds containing oxygen, nitrogen, and sulfur (CHONS), whose structures, formation, and impacts are understudied. The dilution-corrected absolute ion abundance of particle-phase CHONS compounds increased with plume age by a factor of 6.4 over the first 4 h of downwind transport, and their relative contribution to the observed functionalized organic aerosol (OA) mixture increased from 19 % to 40 %. The dilution-corrected absolute ion abundance of particle-phase compounds with sulfide functional groups increased by a factor of 13 with plume age, and their relative contribution to observed OA increased from 4 % to 40 %. Sulfides were present in up to 75 % of CHONS compounds and the increases in sulfides were accompanied by increases in ring-bound nitrogen; both increased together with CHONS prevalence. A complex mixture of intermediate- and semi-volatile gas-phase organic sulfur species was observed in emissions from the fire and depleted downwind, representing potential precursors to particle-phase CHONS compounds. These results demonstrate CHONS formation from nitrogen- and oxygen-containing biomass burning emissions in the presence of reduced sulfur species. In addition, they highlight chemical pathways that may also be relevant in situations with elevated emissions of nitrogen- and sulfur-containing organic compounds from residential biomass burning and fossil fuel use (e.g., coal), respectively.

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13

Deasy, Rebecca E., and Anita R. Maguire. "Baker's-Yeast-Mediated Reduction of Sulfur-Containing Compounds." European Journal of Organic Chemistry 2014, no. 18 (February 24, 2014): 3737–56. http://dx.doi.org/10.1002/ejoc.201301729.

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14

Matsuo, Hirotaka, Yu Hanamure, Rei Miyano, Yōko Takahashi, Satoshi Ōmura, and Takuji Nakashima. "Screening for Sulfur Compounds by Molybdenum-Catalyzed Oxidation Combined with Liquid Chromatography-Mass Spectrometry." Molecules 25, no. 2 (January 7, 2020): 240. http://dx.doi.org/10.3390/molecules25020240.

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The molybdenum (Mo)-catalyzed oxidation of sulfide under neutral conditions yields sulfone. This reaction proceeds more smoothly than olefin epoxidation and primary or secondary alcohol oxidation. In this study, Mo-catalyzed oxidation was used to screen for sulfur compounds (named “MoS-screening”) in microbial broths by liquid chromatography-mass spectrometry (LC/MS). To demonstrate proof-of-concept, known sulfur microbial compounds were successfully identified from a mixture of non-sulfur microbial compounds as sulfinyl or sulfonyl products of Mo-catalyzed oxidation. Then our MoS-screening method was used to screen 300 samples of microbial broth for sulfur compounds. One of the identified compounds was a kitasetaline-containing N-acetyl cysteine moiety produced by an actinomycete strain. These results demonstrate the potential of MoS-screening in the search for new sulfur compounds from microbial sources.

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15

Pošta, Martin, Václav Zima, Lenka Poštová Slavětínská, Marika Matoušová, and Petr Beier. "Synthesis of sulfur karrikin bioisosteres as potential neuroprotectives." Beilstein Journal of Organic Chemistry 18 (May 16, 2022): 549–54. http://dx.doi.org/10.3762/bjoc.18.57.

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The only known sulfur-containing karrikin, 3-methyl-2H-thiopyrano[3,4-b]furan-2-one, has been recently identified as an extremely efficient neuroprotective butenolide. Herein, we report the targeted synthesis of this compound as well as new synthetic protocols toward a class of compounds derived from 2H-furo[2,3-c]pyran-2-ones (karrikins) via bioisosteric exchange of oxygen with sulfur. In particular, we present synthetic procedures toward bioisosteres of karrikins with one or two sulfur heteroatoms incorporated into the core backbone together with evaluation of their biological activity in inhibition of acetylcholinesterase.

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16

Bortolini, O., and M. Fogagnolo. "Mass spectrometry of sulfur-containing compounds in organic and bioorganic fields." Mass Spectrometry Reviews 14, no. 2 (March 1995): 117–62. http://dx.doi.org/10.1002/mas.1280140205.

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17

Konev, Alexander S., and Alexander F. Khlebnikov. "A Building Block Approach to Monofluorinated Organic Compounds." Collection of Czechoslovak Chemical Communications 73, no. 12 (2008): 1553–611. http://dx.doi.org/10.1135/cccc20081553.

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Building blocks for the synthesis of monofluorinated organic compounds are reviewed. The synthetic potential of polyhalomethanes, sulfur- and phosphorus-containing building blocks, difluoroethene, polyhaloethanes, fluoroacetic acid derivatives, and other compounds are described. Pericyclic reactions involving fluorinated compounds and application of the methodology of building blocks to the synthesis of monofluorinated pharmaceuticals and analogs of natural compounds are considered. The review with 317 references covers mainly the literature from 1996 through 2007.

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18

Romanet, Remy, Christian Coelho, Youzhong Liu, Florian Bahut, Jordi Ballester, Maria Nikolantonaki, and Régis Gougeon. "The Antioxidant Potential of White Wines Relies on the Chemistry of Sulfur-Containing Compounds: An Optimized DPPH Assay." Molecules 24, no. 7 (April 5, 2019): 1353. http://dx.doi.org/10.3390/molecules24071353.

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The DPPH (2,2-Diphenyl-1-picrylhydrazyl) assay is an easy and efficient method commonly used to determine the antioxidant capacity of many food matrices and beverages. In contrast with red wines, white wines are poorer in antioxidant polyphenolics, and the more hydrophilic sulfur-containing compounds in them may contribute significantly to their antioxidant capacity. The modification of the classical DPPH method, with a methanol-buffer and the measure of EC20 (quantity of sample needed to decrease the initial DPPH concentration by 20%) has shown that sulfur-containing compounds such as cysteine (0.037 ± 0.003), glutathione (0.054 ± 0.003) or methanethiol (0.104 ± 0.003) appeared to bear antioxidant capacity comparable to well known phenolic compounds, such as catechin (0.035 ± 0.003), caffeic acid (0.057 ± 0.003) and ferulic acid (0.108 ± 0.003), respectively. In the case of white wines, the comparison with REDOX-sensory scores showed that results from this modified DPPH assay are strongly correlated with sensory attributes (r = 0.73, p < 0.1). These results provide an unprecedented illustration of the important contribution of these sulfur-containing compounds to the radical quenching ability of white wines.

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19

Miękus, Natalia, Krystian Marszałek, Magdalena Podlacha, Aamir Iqbal, Czesław Puchalski, and Artur H. Świergiel. "Health Benefits of Plant-Derived Sulfur Compounds, Glucosinolates, and Organosulfur Compounds." Molecules 25, no. 17 (August 21, 2020): 3804. http://dx.doi.org/10.3390/molecules25173804.

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The broad spectrum of the mechanism of action of immune-boosting natural compounds as well as the complex nature of the food matrices make researching the health benefits of various food products a complicated task. Moreover, many routes are involved in the action of most natural compounds that lead to the inhibition of chronic inflammation, which results in a decrease in the ability to remove a pathogen asymptomatically and is connected to various pathological events, such as cancer. A number of cancers have been associated with inflammatory processes. The current review strives to answer the question of whether plant-derived sulfur compounds could be beneficial in cancer prevention and therapy. This review focuses on the two main sources of natural sulfur compounds: alliaceous and cruciferous vegetables. Through the presentation of scientific data which deal with the study of the chosen compounds in cancer (cell lines, animal models, and human studies), the discussion of food processing’s influence on immune-boosting food content is presented. Additionally, it is demonstrated that there is still a need to precisely demonstrate the bioavailability of sulfur-containing compounds from various types of functional food, since the inappropriate preparation of vegetables can significantly reduce the content of beneficial sulfur compounds. Additionally, there is an urgent need to carry out more epidemiological studies to reveal the benefits of several natural compounds in cancer prevention and therapy.

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20

Yoshifuji, Masaaki. "New Type of Phosphorus Compounds Containing Sulfur and Selenium." Phosphorus, Sulfur, and Silicon and the Related Elements 144, no. 1 (January 1, 1999): 557–60. http://dx.doi.org/10.1080/10426509908546305.

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21

Pugliese, Giovanni, Phillip Trefz, Beate Brock, Jochen K. Schubert, and Wolfram Miekisch. "Extending PTR based breath analysis to real-time monitoring of reactive volatile organic compounds." Analyst 144, no. 24 (2019): 7359–67. http://dx.doi.org/10.1039/c9an01478k.

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Direct time resolved mass spectrometric monitoring of reactive exhaled nitrogen- and sulfur-containing volatile organic compounds (VOCs) related to metabolic processes, diseases and bacterial activity.

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22

Kunugi, Akira, Kimiko Kuwamura, and Hidemitsu Uno. "Electrosynthesis of sulfur-containing organic compounds from cumulene derivatives using a sacrificial sulfur-graphite electrode." Electrochimica Acta 42, no. 15 (January 1997): 2399–406. http://dx.doi.org/10.1016/s0013-4686(96)00430-6.

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23

Yao, Qiu Xiang, Mei Li Du, Shui Li Wang, Jing Liu, Jian Li Yang, and Hai Tao Shang. "Distribution of Sulfur Forms in Low Temperature Pyrolysis of Coal." Advanced Materials Research 512-515 (May 2012): 834–37. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.834.

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The distribution of sulfur forms in the products of low temperature pyrolysis of Carboniferous high sulfur coal from Northwest China was investigated. The typical method of Gray-King assay was used to carry out the low temperature pyrolysis experiments. GC-MS analysis was used to investigate the composition of sulfur compounds in the coal tar. The results show that sulfur mainly remained in the semi-coke and accounted for 80.97% of the total sulfur. Pyrites decomposed and transformed into sulfates and organic sulfur. 5 sulfur containing compounds were detected in the coal tar and they are dibenzothiophene, benzonaphthothiophene and their substituted homologs.

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24

Li, Y., U. Pöschl, and M. Shiraiwa. "Molecular corridors and parameterizations of volatility in the evolution of organic aerosols." Atmospheric Chemistry and Physics Discussions 15, no. 19 (October 15, 2015): 27877–915. http://dx.doi.org/10.5194/acpd-15-27877-2015.

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Abstract. The formation and aging of organic aerosols (OA) proceed through multiple steps of chemical reaction and mass transport in the gas and particle phases, which is challenging for the interpretation of field measurements and laboratory experiments as well as accurate representation of OA evolution in atmospheric aerosol models. Based on data from over 30 000 compounds, we show that organic compounds with a wide variety of functional groups fall into molecular corridors, characterized by a tight inverse correlation between molar mass and volatility. We developed parameterizations to predict the volatility of organic compounds containing oxygen, nitrogen and sulfur from the elemental composition that can be measured by soft-ionization high-resolution mass spectrometry. Field measurement data from new particle formation events, biomass burning, cloud/fog processing, and indoor environments were mapped into molecular corridors to characterize the chemical nature of the observed OA components. We found that less oxidized indoor OA are constrained to a corridor of low molar mass and high volatility, whereas highly oxygenated compounds in atmospheric water extend to high molar mass and low volatility. Among the nitrogen- and sulfur-containing compounds identified in atmospheric aerosols, amines tend to exhibit low molar mass and high volatility, whereas organonitrates and organosulfates follow high O : C corridors extending to high molar mass and low volatility. We suggest that the consideration of molar mass and molecular corridors can help to constrain volatility and particle phase state in the modeling of OA particularly for nitrogen- and sulfur-containing compounds.

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25

Zakirova, Larisa Yuryevna. "Influence of Vulcanizing System on the Properties of Rubbers Based on Ethylenepropylene Rubber." Key Engineering Materials 899 (September 8, 2021): 239–44. http://dx.doi.org/10.4028/www.scientific.net/kem.899.239.

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The article investigates the effect of vulcanizing systems of different activity on the vulcanization and elastic-strength properties of rubber compounds based on ethylene-propylene rubber Keltan . Were taken vulcanizing systems: a mixture of organic peroxide, sulfur and sulfenamide accelerator (1); a mixture of organic peroxide, sulfur and dithiodimorpholine (2); a mixture of organic peroxide, sulfur and thiuram accelerator (3); sulfur and sulfenamide accelerator (4). The vulcanization characteristics (maximum and minimum torques; times of onset, optimum and reaching the maximum speed of vulcanization) were evaluated. Elastic-strength (conditional tensile strength, elongation at break, hardness) properties of rubber compounds and operational (changes in conditional tensile strength, elongation at break after aging in air) were determined. It was found that the vulcanizing system (3) containing sulfur, peroxide in an amount of 7.0 parts by weight and thiuram accelerator imparts the best elastic and strength properties to rubber compounds and leads to their resistance to high temperatures.

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26

Li, Ying, Ulrich Pöschl, and Manabu Shiraiwa. "Molecular corridors and parameterizations of volatility in the chemical evolution of organic aerosols." Atmospheric Chemistry and Physics 16, no. 5 (March 14, 2016): 3327–44. http://dx.doi.org/10.5194/acp-16-3327-2016.

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Abstract. The formation and aging of organic aerosols (OA) proceed through multiple steps of chemical reaction and mass transport in the gas and particle phases, which is challenging for the interpretation of field measurements and laboratory experiments as well as accurate representation of OA evolution in atmospheric aerosol models. Based on data from over 30 000 compounds, we show that organic compounds with a wide variety of functional groups fall into molecular corridors, characterized by a tight inverse correlation between molar mass and volatility. We developed parameterizations to predict the saturation mass concentration of organic compounds containing oxygen, nitrogen, and sulfur from the elemental composition that can be measured by soft-ionization high-resolution mass spectrometry. Field measurement data from new particle formation events, biomass burning, cloud/fog processing, and indoor environments were mapped into molecular corridors to characterize the chemical nature of the observed OA components. We found that less-oxidized indoor OA are constrained to a corridor of low molar mass and high volatility, whereas highly oxygenated compounds in atmospheric water extend to high molar mass and low volatility. Among the nitrogen- and sulfur-containing compounds identified in atmospheric aerosols, amines tend to exhibit low molar mass and high volatility, whereas organonitrates and organosulfates follow high O : C corridors extending to high molar mass and low volatility. We suggest that the consideration of molar mass and molecular corridors can help to constrain volatility and particle-phase state in the modeling of OA particularly for nitrogen- and sulfur-containing compounds.

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27

Roesky, Herbert W. "Organometallic compounds containing nitrogen, phosphorus, arsenic and sulfur." Journal of Organometallic Chemistry 281, no. 1 (February 1985): 69–77. http://dx.doi.org/10.1016/0022-328x(85)87091-1.

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28

Petrov, Viacheslav A., Carl G. Krespan, and Will Marshall. "Reaction of quadricyclane with fluorinated sulfur-containing compounds." Journal of Fluorine Chemistry 126, no. 9-10 (October 2005): 1332–41. http://dx.doi.org/10.1016/j.jfluchem.2005.07.001.

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29

Foye, William O. "Sulfur Compounds in Therapy: Radiation-Protective Agents, Amphetamines, and Mucopolysaccharide Sulfation." Annals of Pharmacotherapy 26, no. 9 (September 1992): 1144–47. http://dx.doi.org/10.1177/106002809202600918.

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OBJECTIVE: Sulfur-containing compounds have been used in the search for whole-body radiation-protective compounds, in the design of amphetamine derivatives that retain appetite-suppressive effects but lack most behavioral effects characteristic of amphetamines, and in the search for the cause of kidney stone formation in recurrently stoneforming patients. METHODS: Organic synthetic procedures were used to prepare radiation-protective compounds having a variety of sulfur-containing functional groups, and to prepare amphetamine derivatives having electron-attracting sulfur functions. In the case of the kidney stone causation research, isolation of urinary mucopolysaccharides (MPS) from recurrently stoneforming patients was carried out and the extent of sulfation of the MPS was determined by electrophoresis. RESULTS: Whole-body radiation-protective agents with a high degree of protection against lethal doses of gamma-radiation in mice were found in a series of quinolinium and pyridinium bis(methylthio) and methylthio amino derivatives. Mechanism studies showed that the copper complexes of these agents mimicked the beneficial action of superoxide dismutase. Electron-attracting sulfur-containing functions on amphetamine nitrogen, as well as 4'-amino nitrogen provided amphetamine derivatives with good appetite-suppressant effects and few or no adverse behavioral effects. Higher than normal levels of sulfation of the urinary MPS of stone formers suggested a cause for recurrent kidney stone formation. A sulfation inhibitor was found to prevent recurrence of stone formation and inhibit growth of existing stones. CONCLUSIONS: The inclusion of various sulfur-containing functions in organic molecules yielded compounds having whole-body radiation protection from lethal doses of gamma-radiation in animals. The presence of electron-attracting sulfur functions in amphetamine gave derivatives that retained appetite-suppressant effects and eliminated most adverse behavioral effects. A therapy for recurrent urolithiasis resulted from inhibition of MPS sulfation, after the finding that stoneforming patients had abnormally high levels of MPS sulfation.

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30

Degl’Innocenti, Alessandro, and Antonella Capperucci. "Organosilane-Induced Synthesis and Functionalization of Sulfur-Containing Compounds." European Journal of Organic Chemistry 2000, no. 12 (June 2000): 2171–86. http://dx.doi.org/10.1002/1099-0690(200006)2000:12<2171::aid-ejoc2171>3.0.co;2-3.

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31

Francioso, Antonio, Alessia Baseggio Conrado, Luciana Mosca, and Mario Fontana. "Chemistry and Biochemistry of Sulfur Natural Compounds: Key Intermediates of Metabolism and Redox Biology." Oxidative Medicine and Cellular Longevity 2020 (September 29, 2020): 1–27. http://dx.doi.org/10.1155/2020/8294158.

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Sulfur contributes significantly to nature chemical diversity and thanks to its particular features allows fundamental biological reactions that no other element allows. Sulfur natural compounds are utilized by all living beings and depending on the function are distributed in the different kingdoms. It is no coincidence that marine organisms are one of the most important sources of sulfur natural products since most of the inorganic sulfur is metabolized in ocean environments where this element is abundant. Terrestrial organisms such as plants and microorganisms are also able to incorporate sulfur in organic molecules to produce primary metabolites (e.g., methionine, cysteine) and more complex unique chemical structures with diverse biological roles. Animals are not able to fix inorganic sulfur into biomolecules and are completely dependent on preformed organic sulfurous compounds to satisfy their sulfur needs. However, some higher species such as humans are able to build new sulfur-containing chemical entities starting especially from plants’ organosulfur precursors. Sulfur metabolism in humans is very complicated and plays a central role in redox biochemistry. The chemical properties, the large number of oxidation states, and the versatile reactivity of the oxygen family chalcogens make sulfur ideal for redox biological reactions and electron transfer processes. This review will explore sulfur metabolism related to redox biochemistry and will describe the various classes of sulfur-containing compounds spread all over the natural kingdoms. We will describe the chemistry and the biochemistry of well-known metabolites and also of the unknown and poorly studied sulfur natural products which are still in search for a biological role.

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32

Zhang, Ming, Wen Shuai Zhu, Meng Li, Yan An Li, Suhang Xun, Rong Xiang Qin, and Hua Ming Li. "Deep Oxidative Desulfurization of Dibenzothiophene by Functional Tungsten-Containing Mesoporoussilica from Polyoxometalate-Based Salts." Key Engineering Materials 636 (December 2014): 93–96. http://dx.doi.org/10.4028/www.scientific.net/kem.636.93.

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Tungsten-containing functional mesoporousW-SiO2 have been successfully synthesized by an one-pot and facile room-temperature procedure. These materials presented a high dispersion of tungsten species and excellent catalytic activity on the removal of sulfur compounds without any organic solvents as extractants. The catalytic performance on sulfur compounds was investigated in detail. After recycling for 8 times, the removal of the oxidation desulfurization system could still reach 92.0%.

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33

Han, Yehua, Yanfen Zhang, Chunming Xu, and Chang Samuel Hsu. "Molecular characterization of sulfur-containing compounds in petroleum." Fuel 221 (June 2018): 144–58. http://dx.doi.org/10.1016/j.fuel.2018.02.110.

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34

Rabe, Patrick, Tim A. Klapschinski, Nelson L. Brock, Christian A. Citron, Paul D’Alvise, Lone Gram, and Jeroen S. Dickschat. "Synthesis and bioactivity of analogues of the marine antibiotic tropodithietic acid." Beilstein Journal of Organic Chemistry 10 (August 6, 2014): 1796–801. http://dx.doi.org/10.3762/bjoc.10.188.

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Tropodithietic acid (TDA) is a structurally unique sulfur-containing antibiotic from theRoseobacterclade bacteriumPhaeobacter inhibensDSM 17395 and a few other related species. We have synthesised several structural analogues of TDA and used them in bioactivity tests againstStaphylococcus aureusandVibrio anguillarumfor a structure–activity relationship (SAR) study, revealing that the sulfur-free analogue of TDA, tropone-2-carboxylic acid, has an antibiotic activity that is even stronger than the bioactivity of the natural product. The synthesis of this compound and of several analogues is presented and the bioactivity of the synthetic compounds is discussed.

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35

Chhalodia, Anuj Kumar, Jan Rinkel, Dorota Konvalinkova, Jörn Petersen, and Jeroen S. Dickschat. "Identification of volatiles from six marine Celeribacter strains." Beilstein Journal of Organic Chemistry 17 (February 11, 2021): 420–30. http://dx.doi.org/10.3762/bjoc.17.38.

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The volatiles emitted from six marine Rhodobacteraceae species of the genus Celeribacter were investigated by GC–MS. Besides several known compounds including dimethyl trisulfide and S-methyl methanethiosulfonate, the sulfur-containing compounds ethyl (E)-3-(methylsulfanyl)acrylate and 2-(methyldisulfanyl)benzothiazole were identified and their structures were verified by synthesis. Feeding experiments with [methyl-2H3]methionine, [methyl-13C]methionine and [34S]-3-(dimethylsulfonio)propanoate (DMSP) resulted in the high incorporation into dimethyl trisulfide and S-methyl methanethiosulfonate, and revealed the origin of the methylsulfanyl group of 2-(methyldisulfanyl)benzothiazole from methionine or DMSP, while the biosynthetic origin of the benzothiazol-2-ylsulfanyl portion could not be traced. The heterocyclic moiety of this compound is likely of anthropogenic origin, because 2-mercaptobenzothiazole is used in the sulfur vulcanization of rubber. Also in none of the feeding experiments incorporation into ethyl (E)-3-(methylsulfanyl)acrylate could be observed, questioning its bacterial origin. Our results demonstrate that the Celeribacter strains are capable of methionine and DMSP degradation to widespread sulfur volatiles, but the analysis of trace compounds in natural samples must be taken with care.

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36

Cook, Ryan D., Ying-Hsuan Lin, Zhuoyu Peng, Eric Boone, Rosalie K. Chu, James E. Dukett, Matthew J. Gunsch, et al. "Biogenic, urban, and wildfire influences on the molecular composition of dissolved organic compounds in cloud water." Atmospheric Chemistry and Physics 17, no. 24 (December 21, 2017): 15167–80. http://dx.doi.org/10.5194/acp-17-15167-2017.

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Abstract. Organic aerosol formation and transformation occurs within aqueous aerosol and cloud droplets, yet little is known about the composition of high molecular weight organic compounds in cloud water. Cloud water samples collected at Whiteface Mountain, New York, during August–September 2014 were analyzed by ultra-high-resolution mass spectrometry to investigate the molecular composition of dissolved organic carbon, with a focus on sulfur- and nitrogen-containing compounds. Organic molecular composition was evaluated in the context of cloud water inorganic ion concentrations, pH, and total organic carbon concentrations to gain insights into the sources and aqueous-phase processes of the observed high molecular weight organic compounds. Cloud water acidity was positively correlated with the average oxygen : carbon ratio of the organic constituents, suggesting the possibility for aqueous acid-catalyzed (prior to cloud droplet activation or during/after cloud droplet evaporation) and/or radical (within cloud droplets) oxidation processes. Many tracer compounds recently identified in laboratory studies of bulk aqueous-phase reactions were identified in the cloud water. Organosulfate compounds, with both biogenic and anthropogenic volatile organic compound precursors, were detected for cloud water samples influenced by air masses that had traveled over forested and populated areas. Oxidation products of long-chain (C10−12) alkane precursors were detected during urban influence. Influence of Canadian wildfires resulted in increased numbers of identified sulfur-containing compounds and oligomeric species, including those formed through aqueous-phase reactions involving methylglyoxal. Light-absorbing aqueous-phase products of syringol and guaiacol oxidation were observed in the wildfire-influenced samples, and dinitroaromatic compounds were observed in all cloud water samples (wildfire, biogenic, and urban-influenced). Overall, the cloud water molecular composition depended on air mass source influence and reflected aqueous-phase reactions involving biogenic, urban, and biomass burning precursors.

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37

SANEMITSU, Yuzuru. "Syntheses and pesticidal activities of heterocyclic compounds containing nitrogen and sulfur." Journal of Synthetic Organic Chemistry, Japan 44, no. 10 (1986): 939–52. http://dx.doi.org/10.5059/yukigoseikyokaishi.44.939.

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38

Fukaya, Masashi, Seikou Nakamura, Ryota Nakagawa, Manami Kinka, Souichi Nakashima, and Hisashi Matsuda. "Cyclic sulfur-containing compounds from Allium fistulosum ‘Kujou’." Journal of Natural Medicines 73, no. 2 (December 8, 2018): 397–403. http://dx.doi.org/10.1007/s11418-018-1272-0.

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39

Cheng, X. L., H. Y. Ma, S. H. Chen, R. Yu, X. Chen, and Z. M. Yao. "Corrosion of stainless steels in acid solutions with organic sulfur-containing compounds." Corrosion Science 41, no. 2 (February 1998): 321–33. http://dx.doi.org/10.1016/s0010-938x(98)00125-5.

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40

Lomans, B. P., A. Pol, and H. J. M. Op den Camp. "Microbial cycling of volatile organic sulfur compounds in anoxic environments." Water Science and Technology 45, no. 10 (May 1, 2002): 55–60. http://dx.doi.org/10.2166/wst.2002.0288.

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Microbial cycling of volatile organic sulfur compounds (VOSC) is investigated due to the impact these compounds are thought to have on environmental processes like global temperature control, acid precipitation and the global sulfur cycle. Moreover, in several kinds of industries like composting plants and the paper industry VOSC are released causing odor problems. Waste streams containing these compounds must be treated in order to avoid the release of these compounds to the atmosphere. This paper describes the general mechanisms for the production and degradation of methanethiol (MT) and dimethyl sulfide (DMS), two ubiquitous VOSC in anaerobic environments. Slurry incubations indicated that methylation of sulfide and MT resulting in MT and DMS, respectively, is one of the major mechanisms for VOSC in sulfide-rich anaerobic environments. An anaerobic bacterium that is responsible for the formation of MT and DMS through the anaerobic methylation of H2S and MT was isolated from a freshwater pond after enrichment with syringate as a methyl group donating compound and sole carbon source. In spite of the continuous formation of MT and DMS, steady state concentrations are generally very low. This is due to the microbial degradation of these compounds. Experiments with sulfate-rich and sulfate-amended sediment slurries demonstrated that besides methanogens, sulfate-reducing bacteria can also degrade MT and DMS, provided that sulfate is available. A methanogen was isolated that is able to grow on DMS as the sole carbon source. A large survey of sediments slurries of various origin demonstrated that both isolates are commonly occurring inhabitants of anaerobic environments.

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41

Bayer, Th, H. Wagner, and W. Dorsch. "New Biologically Active Sulfur-Containing Compounds fromAllium cepa." Planta Medica 54, no. 06 (December 1988): 560. http://dx.doi.org/10.1055/s-2006-962556.

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42

Wentrup, Curt. "Nitrogen- and Sulfur-Containing Energetic Compounds. 64 Years of Fascinating Chemistry." Australian Journal of Chemistry 72, no. 8 (2019): 585. http://dx.doi.org/10.1071/ch19263.

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This essay details the author’s work with high-energy molecules based on sulfur or nitrogen, or both, which started with amateur rocket propellants like zinc dust and sulfur followed by experiments with the highly sensitive compounds nitrogen trichloride and fulminating gold. Research on the inorganic and organic fulminates and the isomeric cyanates led to detailed investigations of reactive intermediates generated by flash vacuum pyrolysis or photolysis, in particular nitrenes and carbenes derived from azides, diazo compounds, triazoles, and tetrazoles and characterized in low temperature matrices.

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43

Kunugi, Akira, Kimiko Kuwamura, Masao Inoue, Yasuhiko Kawamura, and Kyo Abe. "Electrosynthesis of sulfur-containing organic compounds from allene derivatives using a sacrificial mixed sulfur/graphite electrode." Electrochimica Acta 41, no. 13 (August 1996): 1987–91. http://dx.doi.org/10.1016/0013-4686(96)00002-3.

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44

Kobotaeva, Natalia, Tatiana Skorokhodova, Oleg Andrienko, Elena Marakina, and Victor Sachkov. "Extractants Based on Coordinating Liquid Polar Solvents for Removal of Sulfur Compounds from Diesel Fuels." Applied Sciences 8, no. 8 (July 30, 2018): 1259. http://dx.doi.org/10.3390/app8081259.

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To remove sulfur-containing compounds (SCC) from the diesel fraction 200–360 °C extraction systems have been created based on coordinating organic solvents—dimethylformamide and dimethylsulfoxide, metal chlorides (CoCl2, CuCl2, CdCl2, MnCl2 and CrCl3), and metal trifluoroacetates (Co(TFA)2, Cu(TFA)2 and Mn(TFA)2). Using PMR spectroscopy the coordination of metal chloride and metal trifluoroacetate on the oxygen atom in the carbonyl group of DMF was shown to redistribute electron density in the solvent molecule and to enhance properties of the acceptor center localized on the nitrogen atom. The removal of sulfur-containing compounds from the diesel fraction proceeded under mild conditions—at the temperature of 25 °C and atmospheric pressure. The degree of SCC removal from the diesel fraction in 30 minutes extraction was more than 90%. The interaction of organic solvents with metal salts and sulfur-containing compounds of the diesel fraction was considered within the framework of the concept of “hard and soft acids and bases” (HSAB). The most complete SCC extraction was carried out with DMF-Mn(TFA)2, MnCl2 and CrCl3 systems, that was probably connected with the implementation of the ‘hard base–hard acid’ system.

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45

BATRAKOV, P. A., I. N. MEDVEDYUK, and V. N. VOZHAKOVA. "ANALYSIS OF METHODS FOR CAPTURING SULFUR-CONTAINING COMPOUNDS IN FLUE GASES FROM POWER BOILERS." Actual Issues Of Energy 3, no. 1 (2021): 111–17. http://dx.doi.org/10.25206/2686-6935-2021-3-1-111-117.

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The article discusses the main methods of capturing sulfur oxides in flue gases that are applicable at modern thermal power plants. The main products formed when burning organic fuel at thermal power plants are also considered.As a result of the oxidative reaction, the sulfur in organic fuel is converted into sulfur oxide; sulfur monoxide (SO), sulfur dioxide (SO2), and sulfur trioxide (SO3) are mostly formed. When released into the atmosphere with flue gases, these compounds have a negative impact not only on the elements of the heating unit, but also on the human body, flora and fauna. The conclusions present the main advantages and disadvantages of each method.

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46

Okazaki, Renji, Yasusuke Matsuhashi, Tsuyoshi Matsumoto, Masaichi Saito, Kyoko Manmaru, and Norihiro Tokitoh. "Synthesis of Small-Ring Sulfur Compounds Containing Germanium and Tin." Phosphorus, Sulfur, and Silicon and the Related Elements 74, no. 1-4 (January 1993): 397–98. http://dx.doi.org/10.1080/10426509308038133.

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47

Yılmaz, Ülkü, and Hasan Küçükbay. "Synthesis and spectral characterization of new benzimidazolium compounds containing sulfur." Phosphorus, Sulfur, and Silicon and the Related Elements 195, no. 7 (February 20, 2020): 580–85. http://dx.doi.org/10.1080/10426507.2020.1728760.

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48

Stone, John Alfred, and Nancy Joan Moote. "The reactions of trichloromethylium with oxygen- and sulfur-containing compounds." Canadian Journal of Chemistry 64, no. 12 (December 1, 1986): 2447–55. http://dx.doi.org/10.1139/v86-405.

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The gas phase reactions of CCl3+ with acetone, diethyl ketone, dimethyl ether, diethyl ether, several cyclic ethers, sulfides, and disulfides have been examined using high pressure mass spectrometry. In many of the reactions a stabilized ion–molecule complex is observed which may or may not react further. With disulfides a second reaction channel is electron transfer, the observation of which shows that the 0–0 ionization energies of these compounds are lower than the ionization energy of CCl3 (8.28 eV) and hence lower than the values obtained by photoelectron spectroscopy. Rate constants for the disappearance of CCl3+ in general show an increase in value with increase in reaction exothermicity. The lack of a measurable effect of pressure on rate constants is discussed for some association reactions which have reaction efficiencies well below unity.

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49

Dočekal, Vojtěch, Bedřich Formánek, Ivana Císařová, and Jan Veselý. "Correction: A formal [4 + 2] cycloaddition of sulfur-containing alkylidene heterocycles with allenic compounds." Organic Chemistry Frontiers 6, no. 22 (2019): 3810. http://dx.doi.org/10.1039/c9qo90096a.

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50

Andari, M. K., H. Behbehani, and H. Qabazard. "DATABASE FOR ORGANIC SULFUR COMPOUNDS USING GC-SCD METHOD. DETERMINATION OF SULFUR CONTAINING COMPOUNDS IN STRAIGHT RUN GAS OBLS (SRGO)." Fuel Science and Technology International 14, no. 7 (August 1996): 897–908. http://dx.doi.org/10.1080/08843759608947619.

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