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Статті в журналах з теми "Catalyse one-pot"

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Автор: Grafiati

Опубліковано: 7 липня 2024

Оновлено: 7 липня 2024

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1

Chen, Gong-Jun, Chao-Qun Chen, Xue-Tian Li, Hui-Chao Ma, and Yu-Bin Dong. "Cu3L2 metal–organic cages for A3-coupling reactions: reversible coordination interaction triggered homogeneous catalysis and heterogeneous recovery." Chemical Communications 54, no. 82 (2018): 11550–53. http://dx.doi.org/10.1039/c8cc07208f.

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A novel Cu₃L₂ metal–organic cage, which features coordination interaction triggered solubility, can be a highly active and reusable catalyst to homogeneously catalyse the one-pot aldehyde–alkyne–amine A³-coupling reaction.

2

Zhou, Yujiao, Jocasta Avila, Nicolas Berthet, Solène Legrand, Catherine C. Santini, Margarida Costa Gomes, and Véronique Dufaud. "Integrated, one-pot carbon capture and utilisation using porous ionic liquids." Chemical Communications 57, no. 64 (2021): 7922–25. http://dx.doi.org/10.1039/d1cc02642a.

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3

Rajabi, Fatemeh, Mika Sillanpää, Christophe Len, and Rafael Luque. "Efficient Synthesis of Dihydropyrimidines Using a Highly Ordered Mesoporous Functionalized Pyridinium Organosilica." Catalysts 12, no. 3 (March 21, 2022): 350. http://dx.doi.org/10.3390/catal12030350.

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A Brönsted acidic ionic solid pyridinium-functionalized organosilica network (PMO-Py-IL) was demonstrated to efficiently catalyse one-pot Biginelli condensation reaction. The green synthesis of 3,4-dihydro-2(H)-pyrimidinones (DHPMs) with high yield was carried out via one-pot three component condensation of β- dicarbonyls, aldehydes, and urea in the presence of a catalytic amount of PMO-Py-IL nanomaterial as an efficient nanocatalyst under solvent free conditions. Furthermore, the catalyst showed outstanding stability and could be easily separated and reused for at least ten reaction runs without significant loss of activity and product selectivity. The green protocol features simple set-up, cost-effectiveness, easy work-up, eco-friendly and mild reaction conditions.

4

Singh, Nishant, Kai Zhang, César A. Angulo-Pachón, Eduardo Mendes, Jan H. van Esch, and Beatriu Escuder. "Tandem reactions in self-sorted catalytic molecular hydrogels." Chemical Science 7, no. 8 (2016): 5568–72. http://dx.doi.org/10.1039/c6sc01268j.

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We report the orthogonal assembly of two structurally dissimilar catalytic hydrogelators with mutually incompatible functional groups able to retain their individual catalytic activity and thus catalyse tandem reactions in one pot.

5

Li, Jianjun, Jia Li, and Weike Su. "Proline triflate catalysed Diels–Alder reaction in the synthesis of tetrahydroquinoline derivatives." Journal of Chemical Research 2009, no. 8 (August 2009): 499–504. http://dx.doi.org/10.3184/030823409x12474221035082.

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Proline triflate was found to catalyse efficiently the one-pot synthesis of 2H-pyranotetrahydroquinolines from aryl imines, and 3,4-dihydro-2 H-pyran with high stereoselectivity. The aryl imines were formed in situ from aromatic amines and arylaldehydes.

6

Tai, Xi-Shi, Peng-Fei Li, and Li-Li Liu. "Synthesis, Crystal Structure, and Catalytic Activity of a Calcium(II) Complex with 4-Formylbenzene-1,3-disulfonate-isonicotinic Acid Hydrazone." Bulletin of Chemical Reaction Engineering & Catalysis 13, no. 3 (December 4, 2018): 429. http://dx.doi.org/10.9767/bcrec.13.3.1961.429-435.

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A new calcium(II) complex was synthesized by one-pot synthesis method from disodium 4-formylbenzene-1,3-disulfonate, isonicotinic acid hydrazide and Ca(ClO4)2•2H2O. The structure of calcium(II) complex was determined by elemental analysis, IR and single crystal X-ray diffraction. The results show that the Ca(II) complex molecules form 3D network structure by the interactions of π-π stacking and hydrogen bonds. The Ca(II) complex catalyst could efficiently catalyse oxidation of benzylic alcohol with good conversion of benzyl alcohol (78 %) and excellent selectivity of benzaldehyde (98 %).Copyright © 2018 BCREC Group. All rights reserved.Received: 13rd December 2017; Revised: 23rd May 2018; Accepted: 23rd May 2018How to Cite: Tai, X.S., Li, P.F., Liu, L.L. (2018). Synthesis, Crystal Structure, and Catalytic Activity of a Calcium(II) Complex with 4-Formylbenzene-1,3-disulfonate-isonicotinic Acid Hydrazone. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (3): 429-435 (doi:10.9767/bcrec.13.3.1961.429-435)Permalink/DOI: https://doi.org/10.9767/bcrec.13.3.1961.429-435

7

Sun, Zhong, Lifang Xue, Shengtian Wang, Xiaohong Wang, and Junyou Shi. "Single step conversion of cellulose to levulinic acid using temperature-responsive dodeca-aluminotungstic acid catalysts." Green Chemistry 18, no. 3 (2016): 742–52. http://dx.doi.org/10.1039/c5gc01730k.

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A new series of heteropolyacids [(CH₃)₃NCH₂CH₂OH]_nH_5−nAlW₁₂O₄₀ are used to catalyse the single step conversion of cellulose into levulinic acid (LA). The highest reported yield of LA directly from cellulose was achieved with 74.8% yield and 98.9% conversion in one pot.

8

Perez Ortiz, Gustavo, John D. Sidda, Emmanuel L. C. de los Santos, Catherine B. Hubert, and Sarah M. Barry. "In vitro elucidation of the crucial but complex oxidative tailoring steps in rufomycin biosynthesis enables one pot conversion of rufomycin B to rufomycin C." Chemical Communications 57, no. 89 (2021): 11795–98. http://dx.doi.org/10.1039/d1cc04794a.

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Cytochrome P450s RufS and RufM catalyse regioselective and stereoselective epoxidation and alkyl oxidation respectively, in a complex series of reactions in the biosynthesis of the antimycobacterial peptides, rufomycins.

9

Rahimi-Nasrabadi, Mehdi, Morteza Hosseini, Amir Homayoun Keihan, and Mohammad Reza Ganjali. "A Colorimetric Sensor for Dopamine Detection Based on Peroxidase-like Activity of Ce2(MoO4)3 Nanoplates." Current Pharmaceutical Analysis 15, no. 3 (February 11, 2019): 224–30. http://dx.doi.org/10.2174/1573412914666180213123557.

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Introduction: Artificial enzyme mimics are materials with similar catalytic function of natural enzymes. Among several types of artificial enzymes, nanomaterial-based products or nanozymes have been of particular interest to researchers. Materials and Methods: In this work, Ce2(MoO4)3 nanoplates were synthesized via a one-pot hydrothermal approach. SEM and EDS characterizations show a plated-like architecture with high purity. These nanoplates are shown to have an intrinsic peroxidase-mimetic activity. In the presence of H2O2, Ce2(MoO4)3 nanoplates could catalyse the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) with high performance to produce a blue dye (with an absorbance maximum at 652 nm). Dopamine (DA) has some reducibility due to the phenol hydroxyl group, which results in using H2O2 and causing the blue shallowing of the reaction solution by inhibiting the reaction between H2O2 and TMB. Based on that, a visual, sensitive and simple colorimetric method using Ce2(MoO4)3 nanoplates as peroxidase mimics was developed for detecting DA. Results and Conclusions: Suitable linear relationship for DA was obtained from 0.1 to 10 µM. The limit of detection (LOD) of the proposed method was calculated as 0.05 µM and the relative standard deviation (RSD) was less than 4.0%. The proposed method was successfully applied to DA detection in human serum sample.

10

Diment, Wilfred T., Tim Stößer, Ryan W. F. Kerr, Andreas Phanopoulos, Christopher B. Durr та Charlotte K. Williams. "Ortho-vanillin derived Al(iii) and Co(iii) catalyst systems for switchable catalysis using ε-decalactone, phthalic anhydride and cyclohexene oxide". Catalysis Science & Technology 11, № 5 (2021): 1737–45. http://dx.doi.org/10.1039/d0cy02164d.

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11

Yang, Da, Huan Liu, Dong-Liang Wang, Zhoujie Luo, Yong Lu, Fei Xia, and Ye Liu. "Co-catalysis over a bi-functional ligand-based Pd-catalyst for tandem bis-alkoxycarbonylation of terminal alkynes." Green Chemistry 20, no. 11 (2018): 2588–95. http://dx.doi.org/10.1039/c8gc00754c.

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12

Zheng, Ya-Yun, Kai-Xiang Feng, Ai-Bao Xia, Jie Liu, Cheng-Ke Tang, Zhan-Yu Zhou, and Dan-Qian Xu. "Merging catalyst-free synthesis and iodine catalysis: one-pot synthesis of dihydrofuropyrimidines and spirodihydrofuropyrimidine pyrazolones." RSC Advances 9, no. 17 (2019): 9770–76. http://dx.doi.org/10.1039/c9ra01665a.

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13

Bhalkikar, Anuja, Zane C. Gernhart, and Chin Li Cheung. "Recyclable Magnetite Nanoparticle Catalyst for One-Pot Conversion of Cellobiose to 5-Hydroxymethylfurfural in Water." Journal of Nanomaterials 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/264037.

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Environmentally benign and easily recoverable magnetite nanoparticles (Fe3O4NPs) were demonstrated to catalyze the one-pot conversion of cellobiose, a glucose disaccharide, to 5-hydroxymethylfurfural (5-HMF). The conversion was achieved in water under hydrothermal conditions. The catalytic activity of Fe3O4NPs surpassed those of iron (II) and iron (III) chlorides in this reaction. Optimized cellobiose conversion reactions catalyzed with Fe3O4NPs gave the highest 5-HMF yields of 23.4 ± 0.6% at 160°C for 24 hours. After three reuses, the Fe3O4NP catalyst retained its catalytic activity with similar 5-HMF yields, demonstrating the recyclability of this eco-friendly catalyst in water.

14

Kaur, Navjot, and Amjad Ali. "One-pot transesterification and esterification of waste cooking oil via ethanolysis using Sr:Zr mixed oxide as solid catalyst." RSC Adv. 4, no. 82 (2014): 43671–81. http://dx.doi.org/10.1039/c4ra07178f.

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15

Shen, Ming-Gui, Shi-Bin Shang, Zhan-Qian Song, Dan Wang, Xiao-Ping Rao, Hong Gao, and He Liu. "Amberlyst A-26: An Efficient and Reusable Heterogeneous Catalyst for a One-pot Oxidation–Cannizarro Reaction." Journal of Chemical Research 37, no. 1 (January 2013): 51–52. http://dx.doi.org/10.3184/174751912x13551435784584.

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Amberlyst A-26 catalyses the efficient synthesis of α-hydroxy-arylacetic acids from aryl methyl ketones in the presence of SeO2. After simple separation, the catalyst does not lose its activity and can be reused without significant loss in activity for at least four cycles.

16

Aneeja, Thaipparambil, Sankaran Radhika, Mohan Neetha, and Gopinathan Anilkumar. "An Overview of the One-pot Synthesis of Imidazolines." Current Organic Chemistry 24, no. 20 (December 2, 2020): 2341–55. http://dx.doi.org/10.2174/1385272824999201001153735.

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One-pot syntheses are a simple, efficient and easy methodology, which are widely used for the synthesis of organic compounds. Imidazoline is a valuable heterocyclic moiety used as a synthetic intermediate, chiral auxiliary, chiral catalyst and a ligand for asymmetric catalysis. Imidazole is a fundamental unit of biomolecules that can be easily prepared from imidazolines. The one-pot method is an impressive approach to synthesize organic compounds as it minimizes the reaction time, separation procedures, and ecological impact. Many significant one-pot methods such as N-bromosuccinimide mediated reaction, ring-opening of tetrahydrofuran, triflic anhydrate mediated reaction, etc. were reported for imidazoline synthesis. This review describes an overview of the one-pot synthesis of imidazolines and covers literature up to 2020.

17

Aneeja, Thaipparambil, Sankaran Radhika, Mohan Neetha, and Gopinathan Anilkumar. "An Overview of the One-pot Synthesis of Imidazolines." Current Organic Chemistry 24, no. 20 (October 2020): 2341–55. http://dx.doi.org/10.2174/138527282499920100115373.

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One-pot syntheses are a simple, efficient and easy methodology, which are widely used for the synthesis of organic compounds. Imidazoline is a valuable heterocyclic moiety used as a synthetic intermediate, chiral auxiliary, chiral catalyst and a ligand for asymmetric catalysis. Imidazole is a fundamental unit of biomolecules that can be easily prepared from imidazolines. The one-pot method is an impressive approach to synthesize organic compounds as it minimizes the reaction time, separation procedures, and ecological impact. Many significant one-pot methods such as N-bromosuccinimide mediated reaction, ring-opening of tetrahydrofuran, triflic anhydrate mediated reaction, etc. were reported for imidazoline synthesis. This review describes an overview of the one-pot synthesis of imidazolines and covers literature up to 2020.

18

Baghernejad, Bita, Majid M. Heravi, and Hossein A. Oskooie. "A Novel and Efficient Catalyst to One-Pot Synthesis of 2-Amino-4H-chromenes by p-Toluenesulfonic Acid." Journal of the Korean Chemical Society 53, no. 6 (December 20, 2009): 631–34. http://dx.doi.org/10.5012/jkcs.2009.53.6.631.

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19

Gupta, Raman, Monika Gupta, Satya Paul, and Rajive Gupta. "Silica-supported ZnCl2 — A highly active and reusable heterogeneous catalyst for the one-pot synthesis of dihydropyrimidinones–thiones." Canadian Journal of Chemistry 85, no. 3 (March 1, 2007): 197–201. http://dx.doi.org/10.1139/v07-018.

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A novel silica-supported zinc chloride catalyst was prepared and investigated for the Biginelli reaction. The key features of the catalyst include rapid reaction with 100% conversion of aldehyde, good catalyst recyclability, and high stability under the reaction conditions (passes hot filtration test successfully). A low catalyst loading (12 mol% of ZnCl2) was required to achieve a quantitative reaction. Other catalysts such as SiO2–AlCl2, SiO2–AlCl2–ZnCl2 were also prepared and their activity was compared with SiO2–ZnCl2 for the Biginelli reaction.Key words: silica gel, zinc chloride, Biginelli compounds, heterogeneous catalysis, reusability.

20

TURHAN, K., та Z. TURGUT. "ЭФФЕКТИВНЫЙ ОДНОРЕАКТОРНЫЙ СИНТЕЗ ПРОИЗВОДНЫХ 2H-ИНДАЗОЛО[2,1-B]ФТАЛАЗИН-1,6,11-ТРИОНОВ, КАТАЛИЗИРУЕМЫЙ Y(OTF)3". Журнал Органической Химии 55, № 2 (лютий 2019): 327. http://dx.doi.org/10.1134/s0514749219020253.

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21

Chen, Ke, Guangzu He, Qiong Tang, and Qahtan A.Yousif. "One-Pot Access to Diverse Functionalized Pyran Annulated Heterocyclic Systems Using SCMNPs@BPy-SO3H as a Novel Magnetic Nanocatalyst." Bulletin of Chemical Reaction Engineering & Catalysis 15, no. 2 (March 24, 2020): 348–66. http://dx.doi.org/10.9767/bcrec.15.2.6693.348-366.

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The SCMNPs@BPy-SO3H catalyst was prepared and characterized using Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), Vibrating Sample Magnetometry (VSM), Energy Dispersive X-ray Spectroscopy (EDX), X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM). Afterwards, its capability was efficiently used to promote the one-pot, three-component synthesis of pyrano[2,3-c]pyrazole and 2-amino-3-cyano-pyrano[3,2-c]chromen-5(4H)-one derivatives. The strategy resulted in the desired products with excellent yields and short reaction times. The SCMNPs@BPy-SO3H catalyst was readily recovered using a permanent magnetic field and it was reused in six runs with a slight decrease in catalytic activity. Copyright © 2020 BCREC Group. All rights reserved

22

Parvulescu, Vasile I., and Simona M. Coman. "Core-Magnetic Composites Catalysts for the Valorization and Up-grading of the Renewable Feedstocks: A Minireview." Current Catalysis 8, no. 1 (June 21, 2019): 2–19. http://dx.doi.org/10.2174/2211544708666181227152000.

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Background: Core-magnetic composites offer unique possibilities to accommodate adequate amounts of acid-base and redox functional sites and hence to catalyze the biomass conversion reactions in a one-pot way. Moreover, due to the dual functionality, the core-magnetic composites provide a bridge between homogeneous and heterogeneous catalysis. Hence, this minireview aims to offer a comprehensive account of remarkable recent applications of core-magnetic composites in the catalytic processes for biomass valorization. Methods: A critical evaluation of synthetic methodologies utilized for the production of the magnetic nanoparticles, characterization techniques and catalytic applications is provided. Results: The benefits of their utilization are exemplified by most representative examples of one-pot transformation of cellulose and upgrading processes. Other recent examples constitute the lignin fragmentation on magnetic iron oxide-based catalysts and the renewable crude glycerol up-grading using core-shell magnetic iron oxide bio-based materials. Conclusion: The review provides important information on the distinctive properties of the functionalized core-magnetic composites. Moreover, this review offers useful information affording a largescale production development, in terms of catalyst and reaction conditions, tailoring selectivity, and the potential to regenerate the catalysts.

23

Kumar, Atul, та Ajay Kumar Bishnoi. "One-pot green synthesis of β-artemether/arteether". RSC Adv. 4, № 60 (2014): 31973–76. http://dx.doi.org/10.1039/c4ra05531d.

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We have developed an efficient one pot green synthesis of β-artemether/arteether from artemisinin, which involves combination of a sodium borohydride – cellulose sulfuric acid (CellSA) catalyst system. This green methodology is high yielding and the catalyst has good recyclability. The developed methodology is simple, cost-effective and the catalyst used is eco-friendly, reusable, and biodegradable.

24

Mohamadpour, Farzaneh. "Salicylic Acid as a Bio-Based, Natural and Versatile Catalyst for Green, Solvent-Free and One-Pot Biginelli Synthesis of 3,4-Dihydropyrimidin-2-(1H)-one/thione Derivatives." Chemistry & Chemical Technology 13, no. 2 (June 10, 2019): 136–44. http://dx.doi.org/10.23939/chcht13.02.136.

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25

Manteghi, Faranak, Fatemeh Zakeri, Owen James Guy, and Zari Tehrani. "MIL-101(Cr), an Efficient Heterogeneous Catalyst for One Pot Synthesis of 2,4,5-tri Substituted Imidazoles under Solvent Free Conditions." Nanomaterials 11, no. 4 (March 26, 2021): 845. http://dx.doi.org/10.3390/nano11040845.

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A chromium-containing metal-organic framework (MOF), MIL-101 (Chromium(III) benzene-1,4-dicarboxylate), was used to catalyze the one pot, three component synthesis of some 2,4,5-trisubstituted imidazoles under solvent-free conditions. The advantages of using this heterogeneous catalyst include short reaction time, high yields, easy and quick isolation of catalyst and products, low amount of catalyst needed, and that the addition of solvent, salt, and additives are not needed. This catalyst is highly efficient and can be recovered at least 5 times with a slight loss of efficiency. The structure of the metal-organic frameworks (MOF) was confirmed by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (HNMR) were performed to confirm some of the synthesized products. Experimental data indicated that the optimum amount of catalyst was 5 mg for benzil (1 mmol), 4-chlorobenzaldehyde (1 mmol), and ammonium acetate (2.5 mmol), and the synthetic route to the various imidazoles is performed in 10 min by 95% yield, an acceptable result rivalling those of other catalysts.

26

Katkar, Santosh, Pravinkumar Mohite, Lakshman Gadekar, Balasaheb Arbad, and Machhindra Lande. "ZnO-beta zeolite mediated simple and efficient method for the one-pot synthesis of quinoxaline derivatives at room temperature." Open Chemistry 8, no. 2 (April 1, 2010): 320–25. http://dx.doi.org/10.2478/s11532-009-0151-7.

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AbstractA rapid and an efficient one-pot method for the synthesis of quinoxalines catalysed by ZnO-beta zeolite at room temperature is described. This environmentally benign method provides several advantages over methods that are currently employed such as a simple work-up, mild reaction conditions, good to excellent yields, and a process to recover and reuse the catalyst for several cycles with consistent activity.

27

Sharghi, Hashem, Mona Hosseini-Sarvari, and Fatemeh Moeini. "Copper-catalyzed one-pot synthesis of benzimidazole derivatives." Canadian Journal of Chemistry 86, no. 11 (November 1, 2008): 1044–51. http://dx.doi.org/10.1139/v08-153.

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A simple, efficient, and environmentally benign method has been developed for the synthesis of 2-substituted benzimidazoles through a one-pot reaction of phenylenediamines with aryl aldehydes in excellent isolated yields under mild conditions using Cu(II) complex as the selective, recyclable, and heterogeneous catalyst at ambient temperature. The Cu(II) complex as a heterogeneous catalyst can be reused in further catalytic reactions, and it was found that its activity remained largely unchanged for eight successive runs. No metal-complex leaching was observed after the consecutive catalytic reactions. The salient features of this method include mild conditions, high yields, simple procedure, and good recovery and reusability of the heterogeneous catalyst.Key words: benzimidazole, o-phenylenediamine, arylaldehydes, heterogeneous catalyst, N,N-bis (2-hydroxyphenyl)pyridine-2,6-dicarboxamide.

28

Prathap, Koppolu, Shaik Lakshman, M. V. Lakshmi, B. V. Durgarao, D. V. L. Sirisha, and N. Krishnarao. "Facile and an efficient one-pot synthesis of 2-arylbenzoxazoles promoted by transition metal oxide nano catalyst." Journal of Physics: Conference Series 2765, no. 1 (May 1, 2024): 012021. http://dx.doi.org/10.1088/1742-6596/2765/1/012021.

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Abstract The advantages and an efficient path way of process for 2-arylbenzoxazole can be obtained by transition metal oxide Nano catalyst. The transition metal nano TiO2 catalysed and a tandem reaction between substituted 2-aminophenols and substituted aromatic aldehydes to produces scaffold series of 15 smoothly forming benzo heterocycles with good to excellent yields (80-94%). The synthesized benzoxazole compounds were confirmed by FT-IR, 1H, 13CNMR, and mass spectroscopy. This article describes a one-stage coupling technique that provides a unique way to access variously functionalized benzoxazole scaffolds. This methodology consists of a one-pot combination of condensation followed by oxidative addition reactions. It was shown that nano TiO2 in ethanol encouraged the formation of 2-aryl benzoxazole scaffolds and this catalyst quickly boosted the cascade reaction that produced a variety of collections of named derivatives. These protocols are atom-economic, efficient, reusable and modular means of accessing restricted named derivatives that have a substantial substrate tolerance and over ten points of diversity.

29

Sudha, S., and M. A. Pasha. "A Facile Synthesis ofN-H- andN-Substituted Acridine-1,8-diones under Sonic Condition." Scientific World Journal 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/930787.

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Synthesis of an assembly of structurally importantN-H- andN-substituted acridine-1,8-diones by CAN (ceric ammonium nitrate) catalysed one-pot four-component reaction of electron-deficient and electron-rich aromatic aldehydes and aromatic amines or ammonium acetate and dimedone or cyclohexyl-1,3-diones at 26°C under sonic condition is reported. The method is clean and energy efficient as it uses a greener method and an eco-friendly catalyst.

30

Tabatabaeian, Khalil, Mohammad Ali Zanjanchi, Manouchehr Mamaghani, and Ali Dadashi. "Ultrasonic-assisted ruthenium-catalyzed one-pot synthesis of biscoumarins." JOURNAL OF ADVANCES IN CHEMISTRY 11, no. 2 (January 1, 2016): 3532–39. http://dx.doi.org/10.24297/jac.v11i2.2219.

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The Ru-grafted zeolite beta was found to be an excellent heterogeneous catalyst for one-pot synthesis of biscoumarins. This reaction was carried out under reflux condition and ultrasonic irradiation. On the other hand, the catalyst could be recovered for the subsequent reactions and reused without appreciable loss of activity.

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Vaaland, Ingrid Caroline, and Magne Olav Sydnes. "Consecutive Palladium Catalyzed Reactions in One-Pot Reactions." Mini-Reviews in Organic Chemistry 17, no. 5 (August 11, 2020): 559–69. http://dx.doi.org/10.2174/1570193x16666190716150048.

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Combining palladium catalyzed reactions in one-pot reactions represents an efficient and economical use of catalyst. The Suzuki-Miyaura cross-coupling has been proven to be a reaction which can be combined with other palladium catalyzed reactions in the same pot. This mini-review will highlight some of the latest examples where Suzuki-Miyaura cross-coupling reactions have been combined with other palladium catalyzed reactions in one-pot reaction. Predominantly, examples with homogeneous reaction conditions will be discussed in addition to a few examples from the authors where Pd/C have been used as a catalyst.

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Griwatz, Jan H., and Hermann A. Wegner. "One-Pot Synthesis of Cycloparaphenylenes." Organic Materials 02, no. 04 (October 2020): 306–12. http://dx.doi.org/10.1055/s-0040-1721082.

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The preparation of cycloparaphenylenes ([n]CPPs) with their bent π-system poses a long-standing challenge in organic synthesis. In the current multi-step approaches to access CPPs, pre-angulated precursors were combined using transition metal-catalysed or mediated coupling reactions. Therefore, there is a long way to the realisation of the idea of an ‘ideal synthesis’. An easy and efficient synthesis of different [n]CPPs would represent a breakthrough, also pushing their incorporation into organic materials. By combining multiple steps in a one-pot approach, the overall time and workload can be drastically shortened. Herein, we present the application of this concept for the preparation of [6] and [9]CPP as a simple and fast alternative to current methods. By tuning the reaction conditions the selective synthesis of both [6] and [9]CPP was demonstrated.

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Bosica, Giovanna, Riccardo De Nittis, and Ryan Borg. "Solvent-Free, One-Pot, Multicomponent Synthesis of Xanthene Derivatives." Catalysts 13, no. 3 (March 10, 2023): 561. http://dx.doi.org/10.3390/catal13030561.

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An efficient and environmentally benign one-pot condensation of cyclic diketones, aldehydes and naphthols was achieved with 1,4-diazabicyclo[2-2-2]octane supported on Amberlyst-15 as a novel catalyst, producing a variety of benzoxanthenones in good to excellent yields. The advantages of this multicomponent reaction include the use of a heterogeneous catalyst, solventless conditions and a simple methodology that is atom-economical and results in low E-factor values. A total of 17 xanthene derivatives, including two novel molecules, were synthesized and then characterized. Aromatic aldehydes carrying an electron-withdrawing group provided excellent yields. Appreciable results were also obtained using aliphatic aldehydes. The catalyst is fully recyclable and can be reused up to six times.

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Putri, Kurnia, Annisa Annisa, Sadang Husain, and Rodiansono Rodiansono. "One-pot Synthesis of Carbon-doped TiO2 with Bimetallic Ni-Ag co-catalysts in Photodegradation of Methylene Blue under UV and Visible Irradiation." Bulletin of Chemical Reaction Engineering & Catalysis 15, no. 1 (August 23, 2019): 35–42. http://dx.doi.org/10.9767/bcrec.15.1.4811.35-42.

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Carbon modified-titanium dioxide (@C-TiO2) was prepared by one-pot procedure from TiCl4 and glucose under hydrothermal conditions at 150 ºC for 24 hours. The obtained @C-TiO2 was employed as support for Ni-Ag(3.0)@C-TiO2 nanocomposite (3.0 is the Ni/Ag molar ratio). The synthesized catalysts were characterized by means of XRD and UV-Vis DRS Spectroscopy. The XRD patterns of @TiO2 show the brookite as the main phase, meanwhile the main phase in the @C-TiO2, Ni-Ag(3.0)@TiO2 and Ni-Ag(3.0)@C-TiO2 nanocomposites were anatase. The band gap of the TiO2 sample slightly shifted to the visible range after the addition of C dopant or Ni-Ag(3.0) co-catalyst as indicated by UV-Vis DRS spectra. Ni-Ag(3.0)@C-TiO2 catalyst showed high photocatalytic activity for photodegradation of MB under both UV and visible irradiations at 60 ºC within 2 hours with maximum MB conversion of 67.5% and 54.1%, respectively. The synergistic action of C dopant or Ni-Ag(3.0) co-catalyst is believed to be important in the improvement of photocatalytic activity of @TiO2. Copyright ©2019 BCREC Group. All rights reserved

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Cai, Ke-ying, Yu-Sheng Liu, Yang Xu, Huimin Zhou, Lingxia Zhang, and Yao Cui. "One-Pot Synthesis of Bi/Fe3O4 and Its Catalytic Performances for 4-Nitrophenol Reduction." Bulletin of Chemical Reaction Engineering & Catalysis 12, no. 1 (April 30, 2017): 89. http://dx.doi.org/10.9767/bcrec.12.1.621.89-95.

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<p>A novel approach was successfully developed for the catalyst Bi-deposited Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles, which was used in the degradation of 4-nitrophenol (4-NP). The Bi/Fe<sub>3</sub>O<sub>4</sub> composite was prepared via a one-pot process from ferrous sulfate and bismuth chloride using hydrazine hydrate as a reducing agent. The catalyst was characterized by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. In the composite pure Fe<sub>3</sub>O<sub>4</sub> particles were synthesized and bismuth particles were well dispersed. The catalytic performances were investigated for the reduction of 4-NP with sodium borohydride. The catalyst has higher activity when Bi/Fe molar ratio is 1:4 in the composite and the rate constant k is about 0.611 min<sup>-1</sup>. The catalyst has good reusability which can be used 10 cycles without obvious deactivation. Furthermore, the catalyst can be easily separated by an external magnetic field. Copyright © 2017 BCREC GROUP. All rights reserved</p><p><em>Received: 11<sup>st</sup> August 2016; Revised: 20<sup>th</sup> December 2016; Accepted: 21<sup>st</sup> December 2016</em></p><p><strong>How to Cite:</strong> Cai, K.Y., Liu, Y.S., Xu, Y., Zhou, H., Zhang, L., Cui., Y. (2017). One-Pot Synthesis of Bi/Fe<sub>3</sub>O<sub>4</sub> and Its Catalytic Performances for 4-Nitrophenol Reduction.<em> Bulletin of Chemical Reaction Engineering & Catalysis</em>, 12 (1): 89-95 (doi:10.9767/bcrec.12.1.621.89-95)</p><p><strong>Permalink/DOI:</strong> http://dx.doi.org/10.9767/bcrec.12.1.621.89-95</p><p> </p>

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Hashemi-Uderji, Somayeh, Mohammad Abdollahi-Alibeik, and Reza Ranjbar-Karimi. "FSM-16-SO3H nanoparticles as a novel heterogeneous catalyst: preparation, characterization, and catalytic application in the synthesis of polyhydroquinolines." Main Group Metal Chemistry 41, no. 3-4 (August 28, 2018): 91–101. http://dx.doi.org/10.1515/mgmc-2018-0006.

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Abstract FSM-16-SO3H nanoparticles were prepared using a sol-gel method at room temperature. The prepared FSM-16-SO3H was used to catalyze the synthesis of polyhydroquinolines through a one-pot, four-component reaction of aldehydes, dimedone, ethyl cyanoacetate, and ammonium acetate under reflux condition in EtOH as a green solvent. To investigate the textural properties of the prepared catalyst, various techniques were applied such as X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscope, and Brunauer–Emmett–Teller. High catalytic activity, easy handling, and thermal stability are the superior properties that could be denoted after successive investigations of this catalyst. In addition, the catalyst can be recovered easily and reused effectively for several cycles.

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Wetchasat, Piraya, Saros Salakhum, Thidarat Imyen, Duangkamon Suttipat, Wannaruedee Wannapakdee, Marisa Ketkaew, Anittha Prasertsab, Pinit Kidkhunthod, Thongthai Witoon, and Chularat Wattanakit. "One-Pot Synthesis of Ultra-Small Pt Dispersed on Hierarchical Zeolite Nanosheet Surfaces for Mild Hydrodeoxygenation of 4-Propylphenol." Catalysts 11, no. 3 (March 5, 2021): 333. http://dx.doi.org/10.3390/catal11030333.

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The rational design of ultra-small metal clusters dispersed on a solid is of crucial importance in modern nanotechnology and catalysis. In this contribution, the concept of catalyst fabrication with a very ultra-small size of platinum nanoparticles supported on a hierarchical zeolite surface via a one-pot hydrothermal system was demonstrated. Combining the zeolite gel with ethylenediaminetetraacetic acid (EDTA) as a ligand precursor during the crystallization process, it allows significant improvement of the metal dispersion on a zeolite support. To illustrate the beneficial effect of ultra-small metal nanoparticles on a hierarchical zeolite surface as a bifunctional catalyst, a very high catalytic performance of almost 100% of cycloalkane product yield can be achieved in the consecutive mild hydrodeoxygenation of 4-propylphenol, which is a lignin-derived model molecule. This instance opens up perspectives to improve the efficiency of a catalyst for the sustainable conversion of biomass-derived compounds to fuels.

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Bosica, Giovanna, Fiona Cachia, Riccardo De Nittis, and Nicole Mariotti. "Efficient One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones via a Three-Component Biginelli Reaction." Molecules 26, no. 12 (June 20, 2021): 3753. http://dx.doi.org/10.3390/molecules26123753.

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Multicomponent reactions are considered to be of increasing importance as time progresses due to the economic and environmental advantages such strategies entail. The three-component Biginelli reaction involves the combination of an aldehyde, a β-ketoester and urea to produce 3,4-dihydropyrimidin-2(1H)-ones, also known as DHPMs. The synthesis of these products is highly important due to their myriad of medicinal properties, amongst them acting as calcium channel blockers and antihypertensive and anti-inflammatory agents. In this study, silicotungstic acid supported on Ambelyst-15 was used as a heterogeneous catalyst for the Biginelli reaction under solventless conditions. Electron-poor aromatic aldehydes gave the best results. Sterically hindered β-ketoesters resulted in lower reaction yields. The reaction was carried out under heterogeneous catalysis to allow easy recovery of the product from the reaction mixture and recycling of the catalyst. The heterogeneity of the reaction was confirmed by carrying out a hot filtration test.

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Krishna Kandala, Laxman Vamshi, Tejinder Kaur, and Mangalampalli Ravikanth. "One pot synthesis of unusual meso-dipyrrinyl corrole." RSC Advances 7, no. 32 (2017): 19878–84. http://dx.doi.org/10.1039/c7ra02664a.

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40

Astuti, Maria Dewi, Ditya Kristina, Rodiansono Rodiansono, and Dwi Rasy Mujiyanti. "One-pot Selective Conversion of Biomass-derived Furfural into Cyclopentanone/Cyclopentanol over TiO2 Supported Bimetallic Ni-M (M = Co, Fe) Catalysts." Bulletin of Chemical Reaction Engineering & Catalysis 15, no. 1 (January 23, 2020): 231–41. http://dx.doi.org/10.9767/bcrec.15.1.6307.231-241.

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One-pot selective conversion of biomass-derived furfural (FFald) into cyclopentanone (CPO) or cyclopentanol (CPL) using bimetallic nickel-based supported on TiO2 (denoted as Ni-M(3.0)/TiO2; M = Co and Fe; 3.0 is Ni/M molar ratio) have been investigated. Catalysts were synthesized via a hydrothermal method at 150 °C for 24 h, followed by H2 reduction at 450 °C for 1.5 h. X-ray Diffraction (XRD) analysis showed that the formation of Ni-Co alloy phase at 2θ = 44.2° for Ni-Co(3.0)/TiO2 and Ni-Fe alloy at 2θ = 44.1° for Ni-Fe(3.0)/TiO2. The amount of acid sites was measured by using ammonia-temperature programmed desorption (NH3-TPD). Ni-Co(3.0)/TiO2 has three NH3 desorption peaks at 180 °C, 353 °C, and 569 °C with acid site amounts of 1.30 µmol.g-1, 1.0 µmol.g-1, and 2.0 µmol.g-1, respectively. On the other hand, Ni-Fe(3.0)/TiO2 consisted of NH3 desorption peaks at 214 °C and 626 °C with acid site amounts of 3.3 µmol.g-1and 2.0 µmol.g-1, respectively. Both Ni-Co(3.0)/TiO2 and Ni-Fe(3.0)/TiO2 catalysts were found to be active for the selective hydrogenation of FFald to furfuryl alcohol (FFalc) at low temperature of 110 °C, H2 3.0 MPa, 3 h with FFalc selectivity of 81.1% and 82.9%, respectively. High yields of CPO (27.2%) and CPL (41.0%) were achieved upon Ni-Fe(3.0)/TiO2 when the reaction temperature was increased to 170 °C, 3.0 MPa of H2, and a reaction time of 6 h. The yield of CPO+CPL on the reused catalyst decreased slightly after the second reaction run, but the activity was maintained for at least three consecutive runs. Copyright © 2020 BCREC Group. All rights reserved

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Zarkadoulas, Athanasios, Ioanna Zgouleta, Nikolaos V. Tzouras, and Georgios C. Vougioukalakis. "Traceless Directing Groups in Sustainable Metal-Catalyzed C–H Activation." Catalysts 11, no. 5 (April 27, 2021): 554. http://dx.doi.org/10.3390/catal11050554.

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Sustainable transformations towards the production of valuable chemicals constantly attract interest, both in terms of academic and applied research. C–H activation has long been scrutinized in this regard, given that it offers a straightforward pathway to prepare compounds of great significance. In this context, directing groups (DG) have paved the way for chemical transformations that had not been achievable using traditional reactions. Few steps, high yields, selectivity and activation of inert substrates are some of the invaluable assets of directed catalysis. Additionally, the employment of traceless directing groups (TDG) greatly improves and simplifies this strategy, enabling the realization of multi-step reactions in one-pot, cascade procedures. Cheap, abundant, readily available transition metal salts and complexes can catalyze a plethora of reactions employing TDGs, usually under low catalyst loadings—rarely under stoichiometric amounts, leading in greater atom economy and milder conditions with increased yields and step-economy. This review article summarizes all the work done on TDG-assisted catalysis with manganese, iron, cobalt, nickel, or copper catalysts, and discusses the structure-activity relationships observed, by presenting the catalytic pathways and range of transformations reported thus far.

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Dar, Bashir Ahmad, Syed Wasim Safvi, and Masood Ahmad Rizvi. "Microwave Assisted Expeditious and Green Cu(II)-Clay Catalyzed Domino One-Pot Three Component Synthesis of 2H-indazoles." Bulletin of Chemical Reaction Engineering & Catalysis 13, no. 1 (April 2, 2018): 82. http://dx.doi.org/10.9767/bcrec.13.1.963.82-88.

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A simple and efficient synthesis of 2H-indazoles is achieved from 2-primary amines, bromobenzaldehydes and sodium azide through domino condensation, C–N and N–N bond formations, catalyzed by a heterogeneous Cu(II)-Clay catalyst. The recyclable heterogeneous Cu(II)-Clay catalyst exhibited a remarkable activity for the title reaction without any additives. An assortment of structurally diverse 2H-indazoles were prepared in good to excellent yields from easily available starting materials by using this protocol. The Cu(II)-Clay catalyst was characterized by using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Brunauer-Emmett-Teller (BET) techniques. Copyright © 2018 BCREC Group. All rights reservedReceived: 24th February 2017; Revised: 8th August 2017; Accepted: 23rd August 2017; Available online: 22nd January 2018; Published regularly: 2nd April 2018How to Cite: Dar, B.A., Safvi, S.W., Rizvi, M.A. (2018). Microwave Assisted Expeditious and Green Cu(II)-Clay Catalyzed Domino One-Pot Three Component Synthesis of 2H-indazoles. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (1): 82-88 (doi:10.9767/bcrec.13.1.963.82-88)

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Lu, Xiao Qing, Min Xing, Ai Xia Pan, Yin Yin Wu, Ji Min Xie, and Min Chen. "One-Pot Synthesis of 1-Benzoylpyrene over Heteropoly Acid Catalysts." Advanced Materials Research 560-561 (August 2012): 294–99. http://dx.doi.org/10.4028/www.scientific.net/amr.560-561.294.

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A novel one-pot catalytic synthesis of 1-benzoylpyrene through acylation of pyrene with benzoyl chloride catalyzed by various Keggin type heteropoly acids (salts) was investigated. Pure 1-benzoylpyrene was obtained and the structure of 1-benzoylpyrene was identified by GC/MS, FT-IR and 1H NMR spectra. H3PW12O40 (PW) was found to be the most active catalyst in the acylation. The yield and the selectivity of 1-benzoylpyrene were up to 97.6 % and 100 %, respectively. The effects of experimental parameters on the catalytic acylation reaction and the recycling performance of PW catalyst were studied. PW catalyst shows well catalytic activity after running for 5 times. The facile product separation and the recycling performance of PW catalyst is expected to contribute to the development of clean and environmentally friendly strategy for the synthesis of 1-benzoylpyrene.

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Nofita Birhi, Damiana, Adzkia Qisthi Ismail, Elvina Dhiaul Iftitah, and Warsito Warsito. "One-Pot Catalytic Oxidation for Transforming Eugenol to Vanillin Using ZnAl2O4 Catalyst." Journal of Pure and Applied Chemistry Research 10, no. 3 (December 19, 2021): 203–13. http://dx.doi.org/10.21776/ub.jpacr.2021.010.03.622.

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In this study, ZnAl2O4 catalyst was synthesized with the capability of transforming eugenol to vanillin through One-Pot Catalytic Oxidation. ZnAl2O4 was synthesized from Zn(CH3COO)2.2H2O and Al2O3 using the wet-impregnation method, and characterized by FTIR, XRD, and SEM. One-Pot Catalytic Oxidation was conducted by heating under reflux at 150oC using nitrobenzene and a certain amount of ZnAl2O4 catalyst (4% and 7%) for 2 and 3 hours of reaction. Catalytic Oxidation is also carried out without catalyst as a comparison. The vanillin product was confirmed by GC and spectral data achieved from UV-Vis, FTIR, and mass spectrometry. The results revealed that transforming eugenol to vanillin using ZnAl2O4 catalyst provides a better selectivity value than without using the catalyst, is 100% for the use of 4% catalyst in 2 hours, while without catalyst gives 88% in 3 hours. In addition, the use of 4% catalyst in 3 hours gives 94% for selectivity of vanillin, and the use of 7% catalyst gives selectivity values at 82% and 85%, respectively for 2 hours and 3 hours. The conversion rate of the use of catalyst and without catalyst gives the perfect rate at 100%, but the use of catalyst produces better vanillin with percent yield at 2.485 for 2 hours, and 3.22% for 3 hours, while without catalyst have percent yield of vanillin at 1.94% for 3 hours.

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Min keng He, Min keng He, Jin Zhang Jin Zhang, Fang yan Chen Fang yan Chen, Ke keShu Ke keShu, and Yu bin Tang Yu bin Tang. "One-Pot Fabrication of K-Doped g-C3N4/SiO2Composite with Enhanced Photocatalytic Activity for Degradation of Tetracycline." Journal of the chemical society of pakistan 43, no. 2 (2021): 124. http://dx.doi.org/10.52568/000563/jcsp/43.02.2021.

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K-doped g-C3N4/SiO2composite (SiO2/K-CN) was synthesized by a facile thermal polymerization with potassium chloride, melamine and nano-silica as raw materials. The as-prepared SiO2/K-CN was characterized by various measures. The photocatalytic activity of SiO2/K-CN was tested via the photocatalytic degradation of tetracycline under visible-light irradiation. The results showed that the specific surface area of SiO2/K-CN catalyst was 28.16m2/g, which is larger than that of pristine K-doped g-C3N4. Both K-doping and silica-combination can reduce the recombination rate of photo-generated electrons-holes pairs and broaden the region of visible light-harvesting. Compared with the pristine K-doped g-C3N4 and composite SiO2/g-C3N4, SiO2/K-CN exhibits distinctly higher photocatalytic activity for degradation of tetracycline. The enhanced photocatalytic performance of SiO2/K-CN is attributed to the increased specific surface area and the synergistic effect of K-doping and silica-combination in both accelerating separation of charged carries and improving visible light-absorption. During photocatalytic degradation of tetracycline, superoxide radicals play the most important role, followed by holes.SiO2/K-CN complex has excellent stability and shows promising application in photocatalytic degradation of organic contaminants in water.

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Min keng He, Min keng He, Jin Zhang Jin Zhang, Fang yan Chen Fang yan Chen, Ke keShu Ke keShu, and Yu bin Tang Yu bin Tang. "One-Pot Fabrication of K-Doped g-C3N4/SiO2Composite with Enhanced Photocatalytic Activity for Degradation of Tetracycline." Journal of the chemical society of pakistan 43, no. 2 (2021): 124. http://dx.doi.org/10.52568/000563.

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K-doped g-C3N4/SiO2composite (SiO2/K-CN) was synthesized by a facile thermal polymerization with potassium chloride, melamine and nano-silica as raw materials. The as-prepared SiO2/K-CN was characterized by various measures. The photocatalytic activity of SiO2/K-CN was tested via the photocatalytic degradation of tetracycline under visible-light irradiation. The results showed that the specific surface area of SiO2/K-CN catalyst was 28.16m2/g, which is larger than that of pristine K-doped g-C3N4. Both K-doping and silica-combination can reduce the recombination rate of photo-generated electrons-holes pairs and broaden the region of visible light-harvesting. Compared with the pristine K-doped g-C3N4 and composite SiO2/g-C3N4, SiO2/K-CN exhibits distinctly higher photocatalytic activity for degradation of tetracycline. The enhanced photocatalytic performance of SiO2/K-CN is attributed to the increased specific surface area and the synergistic effect of K-doping and silica-combination in both accelerating separation of charged carries and improving visible light-absorption. During photocatalytic degradation of tetracycline, superoxide radicals play the most important role, followed by holes.SiO2/K-CN complex has excellent stability and shows promising application in photocatalytic degradation of organic contaminants in water.

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Babu, K. Suresh, B. China Raju, A. Sridhar Rao, S. Praveen Kumar, and J. Madhusudana Rao. "Bismuth triflate catalysed one-pot synthesis of tetrahydrochromanoquinolines." Journal of Chemical Research 2004, no. 6 (June 1, 2004): 421–23. http://dx.doi.org/10.3184/0308234041423754.

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Fraysse, Sandrine, Christophe Coudret, and Jean-Pierre Launay. "One-pot palladium-catalysed synthesis of molecular wires." Tetrahedron Letters 39, no. 43 (October 1998): 7873–76. http://dx.doi.org/10.1016/s0040-4039(98)01762-6.

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Kotharkar, Sandeep A., Sushilkumar S. Bahekar, and Devanand B. Shinde. "Chlorosulfonic acid-catalysed one-pot synthesis of coumarin." Mendeleev Communications 16, no. 4 (January 2006): 241–42. http://dx.doi.org/10.1070/mc2006v016n04abeh002256.

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Usami, K., and A. Okamoto. "Hydroxyapatite: catalyst for a one-pot pentose formation." Organic & Biomolecular Chemistry 15, no. 42 (2017): 8888–93. http://dx.doi.org/10.1039/c7ob02051a.

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