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Artykuły w czasopismach na temat „Sulfonic acids”

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Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 3 marca 2023

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1

Lezina, Olga M., Svetlana N. Subbotina, Larisa L. Frolova, Svetlana A. Rubtsova i Denis V. Sudarikov. "Synthesis and Oxidative Transformations of New Chiral Pinane-Type γ-Ketothiols: Stereochemical Features of Reactions". Molecules 26, nr 17 (29.08.2021): 5245. http://dx.doi.org/10.3390/molecules26175245.

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Chiral γ-ketothiols, thioacetates, thiobenzoate, disulfides, sulfones, thiosulfonates, and sulfonic acids were obtained from β-pinene for the first time. New compounds open up prospects for the synthesis of other polyfunctional compounds combining a biologically active pinane fragment with various pharmacophore groups. It was shown that the syntheses of sulfanyl and sulfonyl derivatives based on 2-norpinanone are characterized by high stereoselectivity in comparison with similar reactions of pinocarvone. The conditions for the preparation of diastereomerically pure thioacetyl and thiobenzoyl derivatives based on pinocarvone, as well as for the chemoselective oxidation of γ-ketothiols with chlorine dioxide to the corresponding thiolsulfonates and sulfonic acids, were selected. The effect of the VO(acac)2 catalyst on the increase in the yields of thiosulfonates was shown. A new direction of the transformation of thiosulfonates with the formation of sulfones was revealed. In the case of pinocarvone-based sulfones, the configuration is inversed at the C2 atom. An epimerization scheme is proposed.

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2

Kiani, Adeleh, Batool Akhlaghinia, Hamed Rouhi-Saadabad i Mehdi Bakavoli. "Direct synthesis of sulfonyl azides from sulfonic acids". Journal of Sulfur Chemistry 35, nr 2 (4.06.2013): 119–27. http://dx.doi.org/10.1080/17415993.2013.801476.

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3

Jiang, Ying, Njud S. Alharbi, Bing Sun i Hua-Li Qin. "Facile one-pot synthesis of sulfonyl fluorides from sulfonates or sulfonic acids". RSC Advances 9, nr 24 (2019): 13863–67. http://dx.doi.org/10.1039/c9ra02531f.

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4

Bahrami, Kiumars. "TAPC-Promoted Synthesis of Sulfonyl Chlorides from Sulfonic Acids". Synlett 2011, nr 18 (19.10.2011): 2671–74. http://dx.doi.org/10.1055/s-0031-1289547.

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5

Su, Debao, Wenbiao Cen, Robert L. Kirchmeier i Jean'ne M. Shreeve. "Synthesis of fluorinated phosphonic, sulfonic, and mixed phosphonic/sulfonic acids". Canadian Journal of Chemistry 67, nr 11 (1.11.1989): 1795–99. http://dx.doi.org/10.1139/v89-278.

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The acids (HO)2P(O)CFHSO3H, (HO)2P(O)(CF2)4O(CF2)2SO3H, H(CF2)2O(CF2)2P(O)(OH)2, H(CF2)2O(CF2)4P(O)(OH)2, (HO)2P(O)(CF2)2O(CF2)4H, and the acid precursor (C2H5O)2P(O)CF(SO3Na)2 have been synthesized. Elemental analysis, 19F, 1H, and 31P NMR, and mass spectroscopy were used for characterization of these materials. They are very strong acids, and exhibit a high degree of stability in aqueous solution at elevated temperature, which makes them attractive candidates for use as electrolytes in fuel cells. Keywords: fluorinated phosphonic acids; fluorinated sulfonic acids; 1H, 19F, 31P NMR.

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6

Peng, Zhen, Yun-Yun Hong, Sha Peng, Xiang-Qun Xu, Shan-Shan Tang, Li-Hua Yang i Long-Yong Xie. "Photosensitizer-free synthesis of β-keto sulfones via visible-light-induced oxysulfonylation of alkenes with sulfonic acids". Organic & Biomolecular Chemistry 19, nr 20 (2021): 4537–41. http://dx.doi.org/10.1039/d1ob00552a.

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A practical and environment-friendly methodology for the construction of β-keto sulfones through visible-light induced direct oxysulfonylation of alkenes with sulfonic acids under open-air and photosensitizer-free conditions was developed.

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7

Badali, Elham, Hossein Rahimzadeh, Ali Sharifi, Azizollah Habibi i Azim Ziyaei Halimehjani. "Nitroepoxide ring opening with thionucleophiles in water: synthesis of α-xanthyl ketones, β-keto sulfones and β-keto sulfonic acids". Organic & Biomolecular Chemistry 18, nr 26 (2020): 4983–87. http://dx.doi.org/10.1039/d0ob00941e.

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Nitroepoxide ring opening with thionucleophiles such as potassium xanthates, sodium aryl sulfinates and sodium bisulfite in water is investigated to provide the corresponding α-xanthyl-α-aryl-2-propanones, β-keto sulfones and β-keto sulfonic acids.

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8

Jang, Doo, i Joong-Gon Kim. "Convenient One-Pot Synthesis of Sulfonyl Azides from Sulfonic Acids". Synlett 2008, nr 18 (23.10.2008): 2885–87. http://dx.doi.org/10.1055/s-0028-1083600.

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9

Bahrami, Kiumars, Mohammad Khodaei i Jamshid Abbasi. "Synthesis of Sulfonyl Chlorides and Sulfonic Acids in SDS Micelles". Synthesis 2012, nr 02 (30.11.2011): 316–22. http://dx.doi.org/10.1055/s-0031-1289628.

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10

Chuev, V. G., A. F. Evleev, A. F. Ermolov, M. A. Kurykin, S. V. Povroznik i G. A. Sokol'sky. "New fluorine-containing sulfonic acids". Journal of Fluorine Chemistry 58, nr 2-3 (sierpień 1992): 359. http://dx.doi.org/10.1016/s0022-1139(00)80824-6.

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11

Dyadyuchenko, L. V., I. G. Dmitrieva, D. Yu Nazarenko i V. D. Strelkov. "Synthesis of Several Substituted Pyridine-3-Sulfonyl Chlorides, -Sulfonic Acids, and -Sulfonyl Amides*". Chemistry of Heterocyclic Compounds 50, nr 9 (20.11.2014): 1259–69. http://dx.doi.org/10.1007/s10593-014-1588-y.

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12

Bahrami, Kiumars. "ChemInform Abstract: TAPC-Promoted Synthesis of Sulfonyl Chlorides from Sulfonic Acids." ChemInform 43, nr 11 (16.02.2012): no. http://dx.doi.org/10.1002/chin.201211064.

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13

Xu, Qiong, Min Zheng i Du Lin Yin. "Preparation of Pine Char Sulfonic Acids with High Acid Capacity Using Phosphoric Acid as a Dehydration Catalyst". Advanced Materials Research 550-553 (lipiec 2012): 124–27. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.124.

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A series of pine char sulfonic acids were prepared via a two-step procedure involving phosphoric acid catalytic charring of pine sawdusts and successively sulfonation of the charred precursors. Solid sulfonic acid material prepared in this new route possessed high sulfonic acid loading with 2.36 mmol g-1at the optimal charring conditions of phosphoric acid being 85%, ratio of pine sawdusts and phosphoric acid being 1: 10, charring time being 3 h, charring temperature being 140 °C. Pine char sulfonic acids showed excellent activity in the esterification of n-butanol and acetic acid.

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14

Cremlyn, Richard J., i Luke Wu. "DL CAMPHOR 3-SULFONIC ACID AND OTHER KETO α-SULFONIC ACIDS". Phosphorus and Sulfur and the Related Elements 39, nr 3-4 (październik 1988): 165–71. http://dx.doi.org/10.1080/03086648808072870.

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15

Li, Wei, i Tsutomu Nonaka. "Paired electrosynthesis of aminoiminomethane-sulfonic acids". Electrochimica Acta 44, nr 15 (styczeń 1999): 2605–12. http://dx.doi.org/10.1016/s0013-4686(98)00393-4.

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16

Caschili, Silvia, Francesco Delogu i Giacomo Cao. "Mechanochemical Degradation of Aromatic Sulfonic Acids". Annali di Chimica 95, nr 11-12 (listopad 2005): 813–21. http://dx.doi.org/10.1002/adic.200590094.

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17

Khan, M. Yasir, Sui So i Gabriel da Silva. "Decomposition kinetics of perfluorinated sulfonic acids". Chemosphere 238 (styczeń 2020): 124615. http://dx.doi.org/10.1016/j.chemosphere.2019.124615.

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18

Datta, Dhrubajyoti, Swagata Dasgupta i Tanmaya Pathak. "Sulfonic nucleic acids (SNAs): a new class of substrate mimics for ribonuclease A inhibition". Organic & Biomolecular Chemistry 17, nr 30 (2019): 7215–21. http://dx.doi.org/10.1039/c9ob01250h.

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19

Bahrami, Kiumars, Mohammad M. Khodaei i Jamshid Abbasi. "ChemInform Abstract: Synthesis of Sulfonyl Chlorides and Sulfonic Acids in SDS Micelles." ChemInform 43, nr 19 (12.04.2012): no. http://dx.doi.org/10.1002/chin.201219087.

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20

Trujillo, John I., i Aravamudan S. Gopalan. "Facile esterification of sulfonic acids and carboxylic acids with triethylorthoacetate". Tetrahedron Letters 34, nr 46 (listopad 1993): 7355–58. http://dx.doi.org/10.1016/s0040-4039(00)60124-7.

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21

Cooper, George W., Wilfred M. Onwo i John R. Cronin. "Alkyl phosphonic acids and sulfonic acids in the Murchison meteorite". Geochimica et Cosmochimica Acta 56, nr 11 (listopad 1992): 4109–15. http://dx.doi.org/10.1016/0016-7037(92)90023-c.

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22

Budzikiewicz, H., R. Fuchs, K. Taraz, M. Marek-kozaczuk i A. Skorupska. "Dihydropyoverdin- 7-Sulfonic Acids - Unusual Bacterial Metabolites". Natural Product Letters 12, nr 2 (wrzesień 1998): 125–30. http://dx.doi.org/10.1080/10575639808048280.

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23

Agami, Claude, Béatrice Prince i Catherine Puchot. "A Convenient Access to Chiral Sulfonic Acids". Synthetic Communications 20, nr 21 (grudzień 1990): 3289–94. http://dx.doi.org/10.1080/00397919008051561.

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24

Sartori, Peter, i Hans Robert Cremer. "Alkylthioderivatives and sulfonic acids of fluoro naphthalines". Journal of Fluorine Chemistry 29, nr 1-2 (sierpień 1985): 116. http://dx.doi.org/10.1016/s0022-1139(00)83352-7.

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25

Sajtos, Ferenc, László Lázár, Anikó Borbás, István Bajza i András Lipták. "Glycosyl azides of sugar 2-sulfonic acids". Tetrahedron Letters 46, nr 31 (sierpień 2005): 5191–94. http://dx.doi.org/10.1016/j.tetlet.2005.05.112.

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26

OTU, E. O., i A. D. WESTLAND. "ChemInform Abstract: Solvent Extraction with Sulfonic Acids". ChemInform 23, nr 13 (22.08.2010): no. http://dx.doi.org/10.1002/chin.199213350.

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27

Poussin, Denis, Huda Morgan i Peter J?S Foot. "Thermal doping of polyaniline by sulfonic acids". Polymer International 52, nr 3 (2003): 433–38. http://dx.doi.org/10.1002/pi.1107.

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28

Herranen, J. "Characterisation of poly(ethylene oxide) sulfonic acids". Solid State Ionics 80, nr 3-4 (wrzesień 1995): 201–12. http://dx.doi.org/10.1016/0167-2738(95)00157-2.

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29

Cook, A. M., A. Schmuckle i T. Leisinger. "Microbial desulfonation of multisubstituted naphthalene sulfonic acids". Experientia 42, nr 1 (styczeń 1986): 95–96. http://dx.doi.org/10.1007/bf01975949.

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30

Cerfontain, Hans, i Ankie Koeberg-Telder. "Methylation of polymethylbenzenesulfonic acids by hexamethylbenzene and pentamethylbenzenesulfonic acid in concentrated sulfuric acid". Canadian Journal of Chemistry 66, nr 1 (1.01.1988): 162–67. http://dx.doi.org/10.1139/v88-025.

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The methylation of a series of polymethylbenzenes (PoMB's) or their sulfonic acids by added hexamethylbenzene (HMB) and pentamethylbenzene-1-sulfonic acid (PeMB-1-S) as reagents in 95.5 and 98.4% H2SO4 as solvent has been studied under homogeneous conditions. HMB effects methylation of 2,4,6-trimethylbenzene-1-sulfonic acid (2,4,6-TrMB-1-S), 2,3,4,6-tetramethylbenzene-1-sulfonic acid (2,3,4,6-TeMB-1-S), and 2,3,5,6-TeMB-1-S, but not of the sulfonic acids of 1,3-dimethylbenzene (1,3-DMB), 1,2,3-TrMB, 1,2,4-TrMB, and 1,2,3,4-TeMB. PeMB-1-S is less reactive as methylating reagent than HMB. The observed substrate reactivity towards methylation by HMB was observed to decrease in the order [Formula: see text], and towards methylation by PeMB-1-S to decrease in the order [Formula: see text]. On the basis of a comparison of these orders of substrate reactivities with those predicted for the series of the PoMB-1-sulfonates and the corresponding PoMB's, it is concluded that the substrate species undergoing methylation are the PoMB's and not the corresponding sulfonates.

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31

Abbenante, Giovanni, Robert Hughes i Rolf H. Prager. "Potential GABA B Receptor Antagonists. IX The Synthesis of 3-Amino-3-(4-chlorophenyl)propanoic Acid, 2-Amino-2-(4-chlorophenyl)ethylphosphonic Acid and 2-Amino-2-(4-chlorophenyl)ethanesulfonic Acid". Australian Journal of Chemistry 50, nr 6 (1997): 523. http://dx.doi.org/10.1071/c96216.

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This paper describes the synthesis of 3-amino-3-(4-chlorophenyl)propanoic acid and the corresponding phosphonic and sulfonic acids, lower homologues of baclofen, phaclofen and saclofen respectively. The chlorinated acids were all weak specific antagonists of GABA at the GABAB receptor, with the sulfonic acid (pA2 4·0) being stronger than the phosphonic acid (pA2 3·8) and carboxylic acid (pA2 3·5).

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32

Liu, Wei, Fang Wang, Pengcheng Meng i Shuang-Quan Zang. "Sulfonic Acids Supported on UiO-66 as Heterogeneous Catalysts for the Esterification of Fatty Acids for Biodiesel Production". Catalysts 10, nr 11 (3.11.2020): 1271. http://dx.doi.org/10.3390/catal10111271.

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Zr-MOF (UiO-66) catalysts PTSA/UiO-66 and MSA/UiO-66 bearing supported sulfonic acids (p-toluenesulfonic acid and methanesulfonic acid, respectively) were prepared through a simple impregnation approach. The UiO-66-supported sulfonic acid catalysts were characterized by X-ray diffraction (XRD), N2 adsorption-desorption, fourier transform infrared spectroscopy (FT-IR) and elemental analysis. The prepared heterogeneous acid catalysts had excellent stability since their crystalline structure was not changed compared with that of the original UiO-66. Zr-MOF MSA/UiO-66 and PTSA/UiO-66 were next successfully used as heterogeneous acid catalysts for the esterification of biomass-derived fatty acids (e.g., palmitic acid, oleic acid) with various alcohols (e.g., methanol, n-butanol). The results demonstrated that both of them had high activity and excellent reusability (more than nine successive cycles) in esterification reactions. Alcohols with higher polarity (e.g., methanol) affected the solid catalyst reusability slightly, while alcohols with moderate or lower polarity (e.g., n-butanol, n-decanol) had no influence. Thus, these developed sulfonic acids-supported metal-organic frameworks (UiO-66) have the potential for use in biodiesel production with excellent reusability.

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33

Ostapova, Elena V., Sergey Yu Lyrschikov i Heinrich N. Altshuler. "Equilibrium constants of the sorption of pyridinecarboxylic acids by polystyrene type sulfocationite". Butlerov Communications 64, nr 10 (31.10.2020): 55–62. http://dx.doi.org/10.37952/roi-jbc-01/20-64-10-55.

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The processes of sorption of pyridine-3-carboxylic (nicotinic) and pyridine-4-carboxylic (isonicotinic) acids by sulfonic acid cation exchangers of the polystyrene type (CU-2-4 and CU-2-8) from aqueous solutions with different pH values were studied. Analysis of the FTIR spectra of isonicotinic acid, isonicotinic acid sulfate, and CU-2-8 sulfonic cation exchanger filled with isonicotinic acid showed that pyridinecarboxylic acid is in the protonated form in the polymer phase. Experimental data of the equilibrium distribution of acids in the aqueous solution-cation exchange system have been obtained. The values of the equilibrium constants for ion exchange and ligand sorption processes involving various forms of pyridinecarboxylic acid, sulfonic cation exchanger, and protons were calculated. The equilibrium constants for the ion exchange of sulfocationite protons by pyridinecarboxylic acid cations from solution are in the range 3.3-4.4. The selectivity of sulfonic cation exchangers to cations increases in the sequences proton < nicotinic acid cation < isonicotinic acid cation. The values of the equilibrium constant for ligand sorption of molecules are 195-220 dm3/mol for isonicotinic acid and reach 320-330 dm3/mol for nicotinic acid, i.e. the sorption activity of the H-form of the cation exchanger is higher in relation to nicotinic acid molecules. A change in the amount of a crosslinking agent (from 4% to 8% divinylbenzene) in a polystyrene type sulfonic cation exchanger does not significantly affect its sorption activity towards pyridinecarboxylic acids.

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34

Smolicheva, Oksana, Marina Chernigovskaya i Tat'yana Raskulova. "PROTON-CONDUCTING MATERIALS BASED ON POLYVINYLCHLORIDE AND AROMATIC SULFONIC ACIDS". Modern Technologies and Scientific and Technological Progress 1, nr 1 (17.05.2021): 74–75. http://dx.doi.org/10.36629/2686-9896-2021-1-1-74-75.

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35

Díaz, Fernando R., Jorge L. Torres, M. Angélica Del Valle, Jorge H. Vélez, J. Christian BernÈde i Gastón A. East. "Poly(3,5‐dichloroaniline) Doped with Different Sulfonic Acids". Journal of Macromolecular Science, Part A 44, nr 10 (sierpień 2007): 1101–8. http://dx.doi.org/10.1080/10601320701524120.

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36

Grygorenko, Oleksandr O., Angelina V. Biitseva i Serhii Zhersh. "Amino sulfonic acids, peptidosulfonamides and other related compounds". Tetrahedron 74, nr 13 (marzec 2018): 1355–421. http://dx.doi.org/10.1016/j.tet.2018.01.033.

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37

Qiu, Weiming, i Donald J. Burton. "Synthesis of novel partially fluorinated phosphonic/sulfonic acids". Journal of Fluorine Chemistry 62, nr 2-3 (czerwiec 1993): 273–81. http://dx.doi.org/10.1016/s0022-1139(00)80100-1.

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38

Akiri, Kalyanachakravarthi, Suryanarayan Cherukuvada, Soumendra Rana i Ashwini Nangia. "Crystal Structures of Pyridine Sulfonamides and Sulfonic Acids". Crystal Growth & Design 12, nr 9 (20.08.2012): 4567–73. http://dx.doi.org/10.1021/cg3007603.

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39

El-hiti, Gamal A. "Recent Advances in the Synthesis of Sulfonic Acids". Sulfur reports 22, nr 3 (lipiec 2001): 217–50. http://dx.doi.org/10.1080/01961770108047962.

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40

Báthori, Nikoletta B., i Ornella E. Y. Kilinkissa. "Are gamma amino acids promising tools of crystal engineering? – Multicomponent crystals of baclofen". CrystEngComm 17, nr 43 (2015): 8264–72. http://dx.doi.org/10.1039/c5ce01383f.

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The crystal structure, thermal analysis and powder X-ray analysis of the multicomponent crystals formed between baclofen and selected monocarboxylic acids, dicarboxylic acids and p-toluene sulfonic acid are presented.

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41

Xu, Qiong, Du Lin Yin i Yue Xia. "Preparation and Catalytic Performances of Glucose Char Sulfonic Acids". Advanced Materials Research 236-238 (maj 2011): 112–15. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.112.

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A series of glucose char sulfonic acids (GCSA) were prepared via a two-step procedure involving sulfuric acid catalytic charring of glucose and successively sulfonation. GCSA prepared in this new route possess high sulfonic acid loading, and acid capacity of GCSA-2 reaches as high as 2.60 mmol g-1 at charring conditions of sulfuric acid being 80%, ratio of glucose and sulfuric acid being 1:8, charring time being 3 h, charring temperature being 80 °C. All GCSA were found to be active in the esterification between n-butanol and acetic acid. GCSA-2 behaved with good activity with 95.6% conversion and 100% ester selectivity.

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42

Petersen, Jeffrey L., Adenike A. Otoikhian, Moshood K. Morakinyo i Reuben H. Simoyi. "Organosulfur oxoacids. Part 2. A novel dimethylthiourea metabolite — Synthesis and characterization of the surprisingly stable and inert dimethylaminoiminomethane sulfonic acid". Canadian Journal of Chemistry 88, nr 12 (grudzień 2010): 1247–55. http://dx.doi.org/10.1139/v10-125.

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A new metabolite of the biologically active thiocarbamide dimethylthiourea (DMTU) has been synthesized and characterized. DMTU’s metabolic activation in the physiological environment is expected to be dominated by S-oxygenation, which produces, successively, the sulfenic, sulfinic, and sulfonic acids before forming sulfate and dimethylurea. Only the sulfinic and sulfonic acids are stable enough to be isolated. This manuscript reports on the first synthesis, isolation, and characterization of the sulfonic acid: dimethylaminoiminomethanesulfonic acid (DMAIMSOA). It crystallizes in the orthorhombic Pbca space group and exists as a zwitterion in its solid crystal form. The negative charge is delocalized over the sulfonic acid oxygens and the positive charge is concentrated over the planar N–C–N framework rather than strictly on the sp2-hybridized cationic carbon center. As opposed to its sulfinic acid analogue, DMAIMSOA is extremely inert in acidic environments and can maintain its titer for weeks at pH 6 and below. It is, however, reasonably reactive at physiological pH conditions and can be oxidized to dimethylurea and sulfate by mild oxidants such as aqueous iodine.

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43

Bolla, Geetha, i Ashwini Nangia. "Novel pharmaceutical salts of albendazole". CrystEngComm 20, nr 41 (2018): 6394–405. http://dx.doi.org/10.1039/c8ce01311j.

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Novel pharmaceutical salts of albendazole drugs are crystallized with sulfonic acids and carboxylic acids. The disorder of the thiopropyl chain in the parent crystal structure is resolved in the salt crystal structures.

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44

Ma, Wenbo, Ruhuai Mei, Giammarco Tenti i Lutz Ackermann. "Ruthenium(II)-Catalyzed Oxidative CH Alkenylations of Sulfonic Acids, Sulfonyl Chlorides and Sulfonamides". Chemistry - A European Journal 20, nr 46 (3.10.2014): 15248–51. http://dx.doi.org/10.1002/chem.201404604.

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45

Paris, Emanuele, Franca Bigi, Daniele Cauzzi, Raimondo Maggi i Giovanni Maestri. "Oxidative dimerization of anilines with heterogeneous sulfonic acid catalysts". Green Chemistry 20, nr 2 (2018): 382–86. http://dx.doi.org/10.1039/c7gc03060f.

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TRUJILLO, J. I., i A. S. GOPALAN. "ChemInform Abstract: Facile Esterification of Sulfonic Acids and Carboxylic Acids with Triethylorthoacetate." ChemInform 25, nr 20 (19.08.2010): no. http://dx.doi.org/10.1002/chin.199420103.

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Zhang, Qing Li, Yan Xia Chang, Lian Jun Wang i Wan Jiang. "Preparation and Thermoelectric Properties of Polyaniline Doped with Protonic Acids". Materials Science Forum 743-744 (styczeń 2013): 100–104. http://dx.doi.org/10.4028/www.scientific.net/msf.743-744.100.

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Hydrochloric acid doped polyaniline and camphor sulfonic acid doped polyaniline were prepared by oxidative chemical polymerization and grinding, respectively. The structures of polyaniline samples were measured by Fourier transform infared spectroscopy. The Seebeck coefficient and electrical conductivity of the composites were investigated as protonic acid content in the temperature range from room temperature to 380K. The highest electrical conductivity of the 1M hydrochloric acid doped polyaniline reaches 5.57×102S/m at 320K, and the mass ratio of 1:1 camphor sulfonic acid doped polyaniline reaches 5.97×102S/m at 380K. This work suggests that a new method improves the thermoelectric properties of conducting polymers.

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Zhang, Yang, Hua Tan i Weibing Liu. "Synthesis of α-sulfonyloxyketones via iodobenzene diacetate (PIDA)-mediated oxysulfonyloxylation of alkynes with sulfonic acids". RSC Advances 7, nr 85 (2017): 54017–20. http://dx.doi.org/10.1039/c7ra11875a.

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Zhang, Hui, Ming Wang i Xuefeng Jiang. "Sustainable access to sulfonic acids from halides and thiourea dioxide with air". Green Chemistry 22, nr 23 (2020): 8238–42. http://dx.doi.org/10.1039/d0gc03135f.

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Li, Zhaopeng, Johan van Lier i Clifford C. Leznoff. "Heterocyclic aromatic amide protecting groups for aryl and phthalocyaninesulfonic acids". Canadian Journal of Chemistry 77, nr 1 (1.01.1999): 138–45. http://dx.doi.org/10.1139/v98-219.

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Pyrroles, indole, imidazole, and a pyrazole were treated with 3,4-dibromobenzenesulfonyl chloride to form 3,4-dibromobenzenesulfonamides. The 1-(3,4-dibromophenylsulfonyl)pyrrole and 1-(3,4-dibromophenylsulfonyl)indole were stable to CuCN in DMF to produce 1-(3,4-dicyanophenylsulfonyl)pyrrole and 1-(3,4-dicyanophenylsulfonyl)indole, which upon treatment with ammonia in 2-N,N-dimethylaminoethanol gave the protected phthalocyanine-2,9,16,23- tetrasulfonamides. Base cleavage of these sulfonamides yielded the free acids. A mixed condensation of 4,5-diheptylphthalonitrile and 1-(3,4-dicyanophenylsulfonyl)pyrrole gave 9,10,16,17,23,24-hexakis(1-heptyl)-2-(1- pyrrolylsulfonyl)phthalocyanine. Cleavage of the latter yielded the lithium salt of the monosulfonic acid.Key words: sulfonic acid blocking groups, phthalocyanine sulfonic acids, 1-(3,4-dicyanophenylsulfonyl)pyrrole, 1-(3,4-dicyanophenylsulfonyl)indole.

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