1
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Chang MY, Lee YL. One-pot synthesis of benzofused 8-oxabicyclo[3.3.1]nonanes via GaCl 3-mediated cyclocondensation of o-allylbenzaldehydes and 1,3-dicarbonyl synthons. Org Biomol Chem 2024; 22:1646-1653. [PMID: 38305467 DOI: 10.1039/d4ob00016a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
GaCl3-mediated one-pot cyclocondensation of o-allylbenzaldehydes and 1,3-dicarbonyls generates benzofused 8-oxabicyclo[3.3.1]nonanes in moderate to good yields in refluxing MeNO2 under easy-operational conditions. A plausible mechanism is proposed and discussed here. In the overall reaction process, various metal chloride-promoted conditions were investigated for one-pot cyclocondensation.
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Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
- NPUST College of Professional Studies, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Yan-Ling Lee
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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2
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Modal S, Sarkar S, Ghosh SS, Khan AT. Regioselective ring‐opening of epoxide and N‐tosylaziridine with 4‐hydroxydithiocoumarin: Key precursors of 2,3‐dihydro‐1,4‐oxathiin and 2,3‐dihydro‐1,4‐thiazine derivatives. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Santa Modal
- Indian Institute of Technology Guwahati Department of Chemistry Guwahati INDIA
| | - Shilpi Sarkar
- Indian Institute of Technology Guwahati Biosciences and Bioengineering Guwahati INDIA
| | - Siddhartha S. Ghosh
- Indian Institute of Technology Guwahati Biosciences and Bioengineering Guwahati INDIA
| | - Abu Taleb Khan
- IIT Guwahati: Indian Institute of Technology Guwahati Chemistry Godhuli gopal path 781039 Guwahati INDIA
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3
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Mamat M, Liu C, Abdukerem D, Abdukader A. A visible-light-induced thiol addition/aerobic oxidation cascade reaction of epoxides and thiols for the synthesis of β-hydroxylsulfoxides. Org Biomol Chem 2021; 19:9855-9859. [PMID: 34761765 DOI: 10.1039/d1ob01826d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photochemical thiol addition/aerobic oxidation cascade reaction has been developed. This protocol enables efficient oxidative coupling of epoxides and thiols to access structurally valuable β-hydroxylsulfoxides. A broad range of functional groups are compatible to obtain moderate to good yields of the target products. Mechanistic studies revealed a sequential reaction pathway involving base-promoted thiol addition of thiols to epoxides and visible-light-induced aerobic oxygenation of thioethers.
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Affiliation(s)
- Marhaba Mamat
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; College of Chemistry, Xinjiang University, Shengli Road 666, Urumqi, 830046, P. R. China.
| | - Changhong Liu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; College of Chemistry, Xinjiang University, Shengli Road 666, Urumqi, 830046, P. R. China.
| | - Dilshat Abdukerem
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; College of Chemistry, Xinjiang University, Shengli Road 666, Urumqi, 830046, P. R. China.
| | - Ablimit Abdukader
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources; College of Chemistry, Xinjiang University, Shengli Road 666, Urumqi, 830046, P. R. China.
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4
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Li XT, Lv L, Wang T, Gu QS, Xu GX, Li ZL, Ye L, Zhang X, Cheng GJ, Liu XY. Diastereo- and Enantioselective Catalytic Radical Oxysulfonylation of Alkenes in β,γ-Unsaturated Ketoximes. Chem 2020. [DOI: 10.1016/j.chempr.2020.03.024] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Abstract
The β-hydroxy sulfides are an important class of organosulfur compounds that have a key role in the synthesis of bioactive compounds containing biological and natural products. The thiolysis of epoxides is the most common and best route for the synthesis of β-hydroxy sulfides. During the last decade, the applications of a diverse range of catalysts and promoter agents in green and organic mediums as well as under solvent-free conditions for the regioselective ring-opening reactions of epoxides with thiols in order to synthesize β-hydroxy sulfides have been studied by various research groups. This review is focused on the important achievements reported in the literature for the thiolysis of epoxides.
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Affiliation(s)
- Zhihua Chen
- Institute of Computing Science and Technology, Guangzhou University, Guangzhou 510006, China
| | | | - Mosstafa Kazemi
- Department of Chemistry, Faculty of Science, Ilam University, PO Box, 69315516 Ilam, Iran
| | - Masoud Mohammadi
- Department of Chemistry, Faculty of Science, Ilam University, PO Box, 69315516 Ilam, Iran
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6
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Matavos-Aramyan S, Soukhakian S, Jazebizadeh MH. Selected methods for the synthesis of sulfoxides and sulfones with emphasis on oxidative protocols. PHOSPHORUS SULFUR 2019. [DOI: 10.1080/10426507.2019.1672691] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Sina Matavos-Aramyan
- Research and Development Department, Division of Chemistry, Raazi Environmental Protection Foundation, Shiraz, Iran
| | - Sadaf Soukhakian
- Research and Development Department, Division of Chemistry, Raazi Environmental Protection Foundation, Shiraz, Iran
| | - Mohammad Hossein Jazebizadeh
- Research and Development Department, Division of Chemistry, Raazi Environmental Protection Foundation, Shiraz, Iran
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7
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Saima, Lavekar AG, Kumar S, Rastogi SK, Sinha AK. Biocatalysis for C–S bond formation: Porcine pancreatic lipase (PPL) catalysed thiolysis/hydrothiolation reactions in sole water. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1615098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Saima
- Medicinal and Process Chemistry Division, C.S.I.R. – Central Drug Research Institute (Council of Scientific and Industrial Research), Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Aditya G. Lavekar
- Medicinal and Process Chemistry Division, C.S.I.R. – Central Drug Research Institute (Council of Scientific and Industrial Research), Lucknow, India
| | - Santosh Kumar
- Medicinal and Process Chemistry Division, C.S.I.R. – Central Drug Research Institute (Council of Scientific and Industrial Research), Lucknow, India
| | - Sumit K. Rastogi
- Medicinal and Process Chemistry Division, C.S.I.R. – Central Drug Research Institute (Council of Scientific and Industrial Research), Lucknow, India
| | - Arun K. Sinha
- Medicinal and Process Chemistry Division, C.S.I.R. – Central Drug Research Institute (Council of Scientific and Industrial Research), Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
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8
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Yao H, Liu J, Wang C. Boronic acid-catalysed C-3 selective ring opening of 3,4-epoxy alcohols with thiophenols and thiols. Org Biomol Chem 2019; 17:1901-1905. [PMID: 30259944 DOI: 10.1039/c8ob02141d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this protocol we described a boronic acid-catalysed C-3 selective ring opening of 3,4-epoxy alcohols with thiophenols and thiols as nucleophiles. This diastereo- and enantiospecific reaction provides an efficient entry to prepare a variety of hydroxyl sulfides. Through the directing effect of the hydroxyl group, nucleophilic attack on the C-3 position of the epoxide moiety is favoured. It can be rationalized in a proposed transition state, in which the boronic acid catalyst tethers both epoxides and S-nucleophiles.
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Affiliation(s)
- Hongqing Yao
- Department of Chemistry, Center for Excellence in Molecular Synthesis, Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 20237, P. R. China.
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9
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Zhen Q, Huang D, Shao Y, Cheng T, Chen J. Direct halosulfenylation of benzo[b]furans: a metal-free synthesis of 3-halo-2-thiobenzo[b]furans. Org Biomol Chem 2018; 16:9204-9210. [PMID: 30465683 DOI: 10.1039/c8ob02680g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The first example of the direct halosulfenylation of benzo[b]furans with commercially available disulfides and N-halosuccinimides has been achieved, providing an efficient metal-free synthetic pathway to access diverse 3-halo-2-thiobenzo[b]furans in moderate to excellent yields. In particular, a halogen (e.g., bromo or iodo) substituent on the benzo[b]furan ring is amenable for further synthetic elaborations thereby broadening the diversity of the products.
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Affiliation(s)
- Qianqian Zhen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
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10
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Synthesis of 1,4-oxathian-2-ones by triton B-catalyzed one-pot reaction of epoxides with ethyl mercaptoacetate. HETEROCYCL COMMUN 2018. [DOI: 10.1515/hc-2017-0273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractA rapid one-pot reaction of epoxides with ethyl mercaptoacetate furnishing 1,4-oxathian-2-ones in the presence of a catalytic amount of eco-friendly triton B is reported. High regioselectivity is due to the nucleophilic attack on the less sterically hindered carbon atom of the aliphatic unsymmetrical epoxide.
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11
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Marakalala MB, Mmutlane EM, Kinfe HH. β-Hydroxy sulfides and their syntheses. Beilstein J Org Chem 2018; 14:1668-1692. [PMID: 30013693 PMCID: PMC6036969 DOI: 10.3762/bjoc.14.143] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 06/13/2018] [Indexed: 12/19/2022] Open
Abstract
Sulfur-containing natural products are ubiquitous in nature, their most abundant source being marine organisms since sulfur, in the form of the sulfate ion, is the second most abundant anion in sea water after chloride. As part of natural products, sulfur can appear in a multitude of combinations and oxidation states: thiol, sulfide (acyclic or heterocyclic), disulfide, sulfoxide, sulfonate, thioaminal, hemithioacetal, various thioesters, thiocarbamate and isothiocyanate. This review article focuses on β-hydroxy sulfides and analogs; their presence in natural products, general protocols for their synthesis, and examples of their application in target oriented synthesis.
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Affiliation(s)
| | - Edwin M Mmutlane
- Department of Chemistry, University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa
| | - Henok H Kinfe
- Department of Chemistry, University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa
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12
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Hu J, Zhu C, Xia F, Fang Z, Yang F, Weng J, Yao P, Zheng C, Dong H, Fu W. Acidic Mesoporous Zeolite ZSM-5 Supported Cu Catalyst with Good Catalytic Performance in the Hydroxysulfurization of Styrenes with Disulfides. NANOMATERIALS 2017; 7:nano7120459. [PMID: 29257075 PMCID: PMC5746948 DOI: 10.3390/nano7120459] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 12/10/2017] [Accepted: 12/13/2017] [Indexed: 11/16/2022]
Abstract
Development of highly active heterogeneous catalysts is an effective strategy for modern organic synthesis chemistry. In this work, acidic mesoporous zeolite ZSM-5 (HZSM-5-M), acidic-free mesoporous zeolite TS-1 (TS-1-M), and basic ETS-10 zeolite supported metal Cu catalysts were prepared to investigate their catalytic performances in the hydroxysulfurization of styrenes with diaryl disulfides. The effect of pore size and acidities of the supports, as well as the Cu species electronic properties of the catalysts on reaction activity were investigated. The results show that Cu+ and Cu2+ binded on HZSM-5-M show the highest activity and product selectivity for the desired β-hydroxysulfides compounds.
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Affiliation(s)
- Jun Hu
- School of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China.
| | - Chaojie Zhu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
| | - Feifei Xia
- School of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China.
| | - Zhongxue Fang
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
| | - Fengli Yang
- School of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China.
| | - Jushi Weng
- School of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China.
| | - Pengfei Yao
- School of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China.
| | - Chunzhi Zheng
- School of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China.
| | - Hai Dong
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
| | - Wenqian Fu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
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13
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14
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Boucher MM, Furigay MH, Quach PK, Brindle CS. Liquid–Liquid Extraction Protocol for the Removal of Aldehydes and Highly Reactive Ketones from Mixtures. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00231] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maria M. Boucher
- Trinity College, 300 Summit Street, Hartford, Connecticut 06106, United States
| | - Maxwell H. Furigay
- Trinity College, 300 Summit Street, Hartford, Connecticut 06106, United States
| | - Phong K. Quach
- Trinity College, 300 Summit Street, Hartford, Connecticut 06106, United States
| | - Cheyenne S. Brindle
- Trinity College, 300 Summit Street, Hartford, Connecticut 06106, United States
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15
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16
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Perin G, Alves D, Jacob RG, Barcellos AM, Soares LK, Lenardão EJ. Synthesis of Organochalcogen Compounds using Non-Conventional Reaction Media. ChemistrySelect 2016. [DOI: 10.1002/slct.201500031] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Gelson Perin
- Laboratório de Síntese Orgânica Limpa - LASOL -; Universidade Federal de Pelotas - UFPel -; P.O. Box 354 96010-900 Pelotas - RS - Brazil, Tel: +55 (53) 3275-7533
| | - Diego Alves
- Laboratório de Síntese Orgânica Limpa - LASOL -; Universidade Federal de Pelotas - UFPel -; P.O. Box 354 96010-900 Pelotas - RS - Brazil, Tel: +55 (53) 3275-7533
| | - Raquel G. Jacob
- Laboratório de Síntese Orgânica Limpa - LASOL -; Universidade Federal de Pelotas - UFPel -; P.O. Box 354 96010-900 Pelotas - RS - Brazil, Tel: +55 (53) 3275-7533
| | - Angelita M. Barcellos
- Laboratório de Síntese Orgânica Limpa - LASOL -; Universidade Federal de Pelotas - UFPel -; P.O. Box 354 96010-900 Pelotas - RS - Brazil, Tel: +55 (53) 3275-7533
| | - Liane K. Soares
- Laboratório de Síntese Orgânica Limpa - LASOL -; Universidade Federal de Pelotas - UFPel -; P.O. Box 354 96010-900 Pelotas - RS - Brazil, Tel: +55 (53) 3275-7533
| | - Eder J. Lenardão
- Laboratório de Síntese Orgânica Limpa - LASOL -; Universidade Federal de Pelotas - UFPel -; P.O. Box 354 96010-900 Pelotas - RS - Brazil, Tel: +55 (53) 3275-7533
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17
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Wang C, Luo L, Yamamoto H. Metal-Catalyzed Directed Regio- and Enantioselective Ring-Opening of Epoxides. Acc Chem Res 2016; 49:193-204. [PMID: 26789498 DOI: 10.1021/acs.accounts.5b00428] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Control of regio- and stereoselectivity of chemical reactions is the central theme in synthetic chemistry. Regioselective and enantiospecific ring opening of readily available enantioenriched epoxides precursors provides a straightforward access to diverse highly functionalized molecules which can serve as chiral building blocks for synthesis of biologically active compounds. However, prior to our research work, the scope of catalytic highly regioselective ring opening of epoxides is limited to structurally or electronically biased epoxides, such as terminal and aromatic epoxides. Regioselective ring-opening of epoxides with substituents on both sides demonstrating similar steric and electronic effects is still a formidable challenge for organic chemists. To address this challenge, our approach is to use the readily available functional moiety incorporated in an epoxide as a directing group to realize the regioselective nucleophilic attack on the oxirane ring. Alternatively, asymmetric ring-opening of epoxides can also provide the ring-opening products in highly enantioenriched form. However, excellent results are usually obtained in the case of the kinetic resolution of terminal epoxides or the desymmetrization of meso-epoxides. In these cases, the issue of regiocontrol of the ring-opening is circumvented or minimized. Based on our successful results of regioselective ring-opening of functionalized epoxides by implementing the directed ring-opening strategy, we also investigated the enantioselective ring-opening of internal epoxides bearing a functional moiety as directing group. This Account summarizes our research on metal-catalyzed directed ring-opening reactions of epoxides, which encompasses the following breakthroughs: (1) highly regioselective ring-opening of various substrates including epoxy allylic alcohols, epoxy homoallylic alcohols and epoxy allylic sulfonamides with a variety of N-, O-, and halide-nucleophiles catalyzed by W-, Mo-, or Ni-salt; (2) first kinetic resolutions of epoxy allylic alcohols, epoxy homoallylic alcohols, and epoxy allylic sulfonamides with various amines as nucleophiles, which were catalyzed by W-bishydroxamic acid (W-BHA), nickel-BINAM, and Gd-N,N'-dioxide catalytic system, respectively; (3) successful implementation of the strategy of combined asymmetric syntheses by the combination of the enantioselective epoxidation and the enantioselective ring-opening of 2,3-epoxy alcohols establishing a new entry to prepare amino alcohols in regio-, diastereo-, and enantiomerically pure form.
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Affiliation(s)
- Chuan Wang
- Department of Chemistry, The University of Chicago, 5735 South
Ellis Avenue, Chicago, Illinois 60637, United States
| | - Lan Luo
- Department of Chemistry, The University of Chicago, 5735 South
Ellis Avenue, Chicago, Illinois 60637, United States
| | - Hisashi Yamamoto
- Department of Chemistry, The University of Chicago, 5735 South
Ellis Avenue, Chicago, Illinois 60637, United States
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18
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Azizi N, Edrisi M. Biodegradable choline hydroxide promoted environmentally benign thiolysis of epoxides. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.12.080] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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19
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Marrocchi A, Adriaensens P, Bartollini E, Barkakaty B, Carleer R, Chen J, Hensley DK, Petrucci C, Tassi M, Vaccaro L. Novel cross-linked polystyrenes with large space network as tailor-made catalyst supports for sustainable media. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.10.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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20
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Bogolubsky AV, Moroz YS, Mykhailiuk PK, Ostapchuk EN, Rudnichenko AV, Dmytriv YV, Bondar AN, Zaporozhets OA, Pipko SE, Doroschuk RA, Babichenko LN, Konovets AI, Tolmachev A. One-Pot Parallel Synthesis of Alkyl Sulfides, Sulfoxides, and Sulfones. ACS COMBINATORIAL SCIENCE 2015; 17:348-54. [PMID: 25932994 DOI: 10.1021/acscombsci.5b00024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A simple and cost-effective one-pot parallel synthesis approach to sulfides, sulfoxides, and sulfones from thiourea was elaborated. The method combines two procedures optimized to the parallel synthesis conditions: alkylation of thiourea with alkyl chlorides and mono or full oxidation of in situ generated sulfides with H2O2 or H2O2-(NH4)2MoO4. The experimental set up required commonly used lab equipment: conventional oven and ultrasonic bath; the work up includes filtration or extraction with chloroform. The method was evaluated on an 81 member library of drug-like sulfides, sulfoxides, and sulfones yielding the compounds on a 30-300 mg scale. A small-scale synthesis of 2-(benzhydrylsulfinyl)acetamide (modafinil) utilizing our approach resulted in similar efficiency to the published procedures.
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Affiliation(s)
| | - Yurii S. Moroz
- Enamine, Ltd., 61 Chervonotkatska
Street, Kyiv, 02094, Ukraine
- ChemBioCenter, Kyiv National Taras Shevchenko University, 61 Chervonotkatska Street, Kyiv, 02094, Ukraine
| | - Pavel K. Mykhailiuk
- Enamine, Ltd., 61 Chervonotkatska
Street, Kyiv, 02094, Ukraine
- Department
of Chemistry, Kyiv National Taras Shevchenko University, 64 Volodymyrska
Street, Kyiv, 01601, Ukraine
| | - Eugeniy N. Ostapchuk
- Enamine, Ltd., 61 Chervonotkatska
Street, Kyiv, 02094, Ukraine
- ChemBioCenter, Kyiv National Taras Shevchenko University, 61 Chervonotkatska Street, Kyiv, 02094, Ukraine
| | | | | | - Anna N. Bondar
- Department
of Chemistry, Kyiv National Taras Shevchenko University, 64 Volodymyrska
Street, Kyiv, 01601, Ukraine
| | - Olga A. Zaporozhets
- Department
of Chemistry, Kyiv National Taras Shevchenko University, 64 Volodymyrska
Street, Kyiv, 01601, Ukraine
| | - Sergey E. Pipko
- ChemBioCenter, Kyiv National Taras Shevchenko University, 61 Chervonotkatska Street, Kyiv, 02094, Ukraine
| | - Roman A. Doroschuk
- Department
of Chemistry, Kyiv National Taras Shevchenko University, 64 Volodymyrska
Street, Kyiv, 01601, Ukraine
| | - Liudmyla N. Babichenko
- Enamine, Ltd., 61 Chervonotkatska
Street, Kyiv, 02094, Ukraine
- ChemBioCenter, Kyiv National Taras Shevchenko University, 61 Chervonotkatska Street, Kyiv, 02094, Ukraine
| | - Anzhelika I. Konovets
- Enamine, Ltd., 61 Chervonotkatska
Street, Kyiv, 02094, Ukraine
- The
Institute of High Technologies, Kyiv National Taras Shevchenko University, 4 Glushkov Street, Building 5, Kyiv, 03187, Ukraine
| | - Andrey Tolmachev
- Enamine, Ltd., 61 Chervonotkatska
Street, Kyiv, 02094, Ukraine
- ChemBioCenter, Kyiv National Taras Shevchenko University, 61 Chervonotkatska Street, Kyiv, 02094, Ukraine
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Yadav VK, Srivastava VP, Yadav LDS. Rongalite® mediated highly regioselective aerobic hydroxysulfenylation of styrenes with disulfides: a convenient approach to β-hydroxy sulfides. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Badiceanu AD, Garst AE, Trubitt ME, Nolin KA. Addition of unactivated thiols to epoxides and oxetanes catalyzed by a rhenium-oxo complex. CATAL COMMUN 2014. [DOI: 10.1016/j.catcom.2014.01.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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23
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PhI(OAc)2/KI mediated 1,2-acetoxysulfenylation of alkenes: facile synthesis of β-acetoxysulfides. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.08.018] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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24
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Liang G, Chen J, Chen J, Li W, Chen J, Wu H. Sc(OTf)3-catalyzed synthesis of thiosulfonates in ionic liquid-water. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.09.132] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Prakash GKS, Mathew T, Olah GA. Gallium(III) triflate: an efficient and a sustainable Lewis acid catalyst for organic synthetic transformations. Acc Chem Res 2012; 45:565-77. [PMID: 22148160 DOI: 10.1021/ar2002039] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Green chemical processes play a crucial role in sustainable development, and efficient recyclable catalysts that can be conveniently applied in various chemical reactions are the key elements for the development of sustainable synthetic processes. Many organic transformations rely on Lewis and Brønsted acid catalysts, and such molecules have been widely studied in organic synthesis. Over the years, researchers have looked for Lewis acid catalysts that provide high selectivity and high turnover frequency but are also stable in aqueous media and recoverable. Since the first preparation of trifluoromethanesulfonic acid by Hazeldine (triflic acid, HOTf), researchers have synthesized and used numerous metal triflates in a variety of organic reactions. Even though the rare earth metal triflates have played a major role in these studies, the majority of rare earth triflates lack one or more of the primary properties of sustainable catalysts: low cost and easy availability of the metals, easy preparation of triflates, aqueous/thermal stability, recyclability, and catalytic efficiency. In this Account, we describe the synthetic applications of Ga(OTf)(3) and its advantages over similar catalysts. Ga(OTf)(3) can be conveniently prepared from gallium metal or gallium chloride in excess of trifluoromethanesulfonic acid (triflic acid) under reflux. Among many Lewis acid catalysts recently studied, Ga(OTf)(3) is water tolerant and soluble and requires very low catalyst loading to drive various acid-catalyzed reactions including Friedel-Crafts alkylation, hydroxyalkylation, and acylation selectively and efficiently. In many reactions Ga(OTf)(3) demonstrated high chemo- and regioselectivity, high yields, excellent stability, and recyclability. We successfully synthesized many biologically active heterocycles and their fluoroanalogs under mild conditions. Many challenging reactions such as the ketonic Strecker reactions proceed efficiently via Ga(OTf)(3) catalysis. Because it is stable in water, this catalyst provides the opportunity to study substrates and develop new synthetic protocols in aqueous media, significantly reducing the production of hazardous waste from organic solvents and toxic catalyst systems.
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Affiliation(s)
- G. K. Surya Prakash
- Donald P. and Katherine B. Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, 837 Bloom Walk, Los Angeles, California 90089-1661, United States
| | - Thomas Mathew
- Donald P. and Katherine B. Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, 837 Bloom Walk, Los Angeles, California 90089-1661, United States
| | - George A. Olah
- Donald P. and Katherine B. Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, 837 Bloom Walk, Los Angeles, California 90089-1661, United States
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27
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Romdhani-Younes M, Chaabouni MM. Efficient synthesis of β, β’-dihydroxy sulfides by ring opening of epoxides with mercaptoethanol catalyzed under solvent-free conditions. J Sulphur Chem 2012. [DOI: 10.1080/17415993.2012.662685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Moufida Romdhani-Younes
- a Laboratoire de Chimie Organique Structurale, Département de Chimie, Faculté des Sciences de Tunis , Université Tunis El Manar , 2092 , Tunis , Tunisia
| | - Mohamed Moncef Chaabouni
- a Laboratoire de Chimie Organique Structurale, Département de Chimie, Faculté des Sciences de Tunis , Université Tunis El Manar , 2092 , Tunis , Tunisia
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28
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29
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Agafontsev AM, Gorshkov NB, Tkachev AV. Efficient synthesis of β-hydroxy sulfides by microwave-promoted ring opening in (+)-3-carene trans-epoxide with sodium thiolates. MENDELEEV COMMUNICATIONS 2011. [DOI: 10.1016/j.mencom.2011.07.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Sui D, Wu F, Xu Q, Yu X. Rongalite Promoted Highly Regioselective Synthesis of β-hydroxytellurides. JOURNAL OF CHEMICAL RESEARCH 2011. [DOI: 10.3184/174751911x13049538828959] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Ditellurides undergo facile cleavage on treatment with rongalite (sodium hydroxymethanesulfinate) to generate tellurium anions in situ, which undergo ring opening of epoxides in high regioselective manner. A simple, cost-effective method has been developed to prepare β-hydroxytellurides with good yields.
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Affiliation(s)
- Dongsheng Sui
- College of Chemistry and Materials Engineering, Wenzhou Universtity, Wenzhou 325035, P. R. China
| | - Feifei Wu
- College of Chemistry and Materials Engineering, Wenzhou Universtity, Wenzhou 325035, P. R. China
| | - Qing Xu
- College of Chemistry and Materials Engineering, Wenzhou Universtity, Wenzhou 325035, P. R. China
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31
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Ding Q, Zhu D, Jin H, Chen J, Ding J, Wu H. Eco-Friendly One-Pot Synthesis of 2,4-Disubstituted Thiazoles by Grinding Under Catalyst- and Solvent-Free Conditions. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.492366] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Quansehng Ding
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou, PR China
| | - Dongjian Zhu
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou, PR China
| | - Huile Jin
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou, PR China
| | - Jiuxi Chen
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou, PR China
| | - Jinchang Ding
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou, PR China
| | - Huayue Wu
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou, PR China
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32
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Li J, Jiang DN, Chen JX, Liu MC, Ding JC, Wu HY. Eco-friendly synthesis of quinoxaline derivatives by grinding under solvent-free conditions. J Heterocycl Chem 2011. [DOI: 10.1002/jhet.597] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Shailaja M, Manjula A, Vittal Rao B. (Bromodimethyl)sulfonium Bromide–Mediated Thiolysis of Epoxides: An Easy Access to β-Hydroxy Sulfides and Benzoxathiepinones in Solvent-Free Conditions. SYNTHETIC COMMUN 2010. [DOI: 10.1080/00397910903458595] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Dan W, Deng H, Chen J, Liu M, Ding J, Wu H. A new odorless one-pot synthesis of thioesters and selenoesters promoted by Rongalite®. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.07.023] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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Azizi N, Khajeh-Amiri A, Ghafuri H, Bolourtchian M. LiOH-Catalyzed Simple Ring Opening of Epoxides Under Solvent-Free Conditions. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426500903127573] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Najmedin Azizi
- a Chemistry and Chemical Engineering Research Center of Iran , Tehran, Iran
| | | | - Hossein Ghafuri
- a Chemistry and Chemical Engineering Research Center of Iran , Tehran, Iran
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36
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Das B, Balasubramanyam P, Krishnaiah M, Veeranjaneyulu B, Sudhakar D. Efficient Synthesis of β-Hydroxy Sulfides and β-Hydroxy Sulfoxides Catalyzed by Cu/MgO Under Solvent-Free Conditions. SYNTHETIC COMMUN 2010. [DOI: 10.1080/00397910903219500] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Biswanath Das
- a Organic Chemistry Division I , Indian Institute of Chemical Technology , Hyderabad, India
| | | | - Maddeboina Krishnaiah
- a Organic Chemistry Division I , Indian Institute of Chemical Technology , Hyderabad, India
| | | | - Dega Sudhakar
- a Organic Chemistry Division I , Indian Institute of Chemical Technology , Hyderabad, India
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37
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Jin C, Wang Y, Su W. Selective Synthesis of “Paco” or “Alt” Isomers of Acetoxylcalixarenes Catalysed by Bi(OTf) 3. JOURNAL OF CHEMICAL RESEARCH 2010. [DOI: 10.3184/030823410x12731611998876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The “paco” or “alt” isomers of acetoxylcalixarenes were selectively prepared in the presence of catalytic amount (2 mol%) of Bi(OTf)3,. Calix[4]arenes selectively gave two different isomers under specified conditions with a good selectivity, but, calix[6]arenes and calix[8]arenes only gave the “alt” isomers with a high selectivity.
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Affiliation(s)
- Can Jin
- Key Laboratory of Pharmaceutical Engineering of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Youran Wang
- Key Laboratory of Pharmaceutical Engineering of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Weike Su
- Key Laboratory of Pharmaceutical Engineering of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
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38
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Cai MT, Lv GS, Chen JX, Gao WX, Ding JC, Wu HY. CAN/I2-catalyzed Chemoselective Synthesis of Thiosulfonates by Oxidation of Disulfides or Thiols. CHEM LETT 2010. [DOI: 10.1246/cl.2010.368] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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39
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Xu Y, Chen J, Gao W, Jin H, Ding J, Wu H. Solvent-Free Synthesis of 3,5-di(Hetero)Aryl-1,2,4-Thiadiazoles by Grinding of Thioamides under Oxidative Conditions. JOURNAL OF CHEMICAL RESEARCH 2010. [DOI: 10.3184/030823410x12677120188989] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An efficient and facile synthesis of 3,5-di(hetero)aryl-1,2,4-thiadiazoles by oxidative dimerisation of thioamides by grinding with NBS under solvent-free conditions at room temperature has been developed. The efficiency of this reaction was demonstrated by the compatibility with trifluoromethyl, methyl, methoxy, chloro, pyridyl and thienyl groups. This method has notable advantages in terms of short reaction times, high yields and is a more practical alternative to the existing methods to access these compounds.
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Affiliation(s)
- Yali Xu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Jiuxi Chen
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Wenxia Gao
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Huile Jin
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Jinchang Ding
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
- Wenzhou Vocational and Technical College, Wenzhou, 325035, P. R. China
| | - Huayue Wu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
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40
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Huang T, Zhang Q, Chen J, Gao W, Ding J, Wu H. Synthesis of quinoxalines catalysed by cetyltrimethyl ammonium bromide (CTAB) in aqueous media. JOURNAL OF CHEMICAL RESEARCH 2009. [DOI: 10.3184/030823409x12591655855261] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A facile and simple method has been developed for the condensation of 1,2-diaminobenzenes with α-bromoketones to form quinoxalines with good yields using cetyltrimethyl ammonium bromide (CTAB) in aqueous media. The efficiency of this reaction was demonstrated by the compatibility with nitro, methyl, methoxy, fluoro chloro bromo and furanyl groups. The important features of the methodology are broad substrate scope, simple workup, and no requirement for metal catalysts.
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Affiliation(s)
- Tieqiang Huang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P.R. China
| | - Qaing Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P.R. China
| | - Jiuxi Chen
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P.R. China
| | - Wenxia Gao
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P.R. China
| | - Jinchang Ding
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P.R. China
- Wenzhou Vocational and Technical College, Wenzhou, 325035, P.R. China
| | - Huayue Wu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P.R. China
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41
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Yang X, Xu Y, Chen J, Ding J, Wu H, Su W. Sodium dithionite-promoted synthesis of 2-arylbenzothiazoles by reaction of 2,2'-disulfanediyldianiline with aldehydes in water. JOURNAL OF CHEMICAL RESEARCH 2009. [DOI: 10.3184/030823409x12560401198996] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Sodium dithionite-promoted synthesis of 2-arylbenzothiazoles by reaction of 2,2'-disulfanediyldianiline with aldehydes in the presence of sodium dodecyl sulfate in water has been developed. Possible reaction pathways are discussed and the effects of different promoter on the reaction are investigated. The important features of this methodology are simple work-up, environmentally benign, high yields, metal-free, and inexpensive reagents.
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Affiliation(s)
- Xiaoliang Yang
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325027, P.R. China
| | - Yali Xu
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325027, P.R. China
| | - Jiuxi Chen
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325027, P.R. China
| | - Jinchang Ding
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325027, P.R. China
- Wenzhou Vocational and Technical College, Wenzhou, 325035, P.R. China
| | - Huayue Wu
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325027, P.R. China
| | - Weike Su
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325027, P.R. China
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Zhejiang Key Laboratory of Pharmaceutical Engineering, Hangzhou, 310014, P.R. China
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42
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Xiao H, Chen J, Liu M, Wu H, Ding J. An Approach to Disulfide Synthesis Promoted by Sulfonyl Chloride in Sodium Bicarbonate Aqueous Media. PHOSPHORUS SULFUR 2009. [DOI: 10.1080/10426500802529051] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Huilong Xiao
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou, PR China
| | - Jiuxi Chen
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou, PR China
| | - Miaochang Liu
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou, PR China
| | - Huayue Wu
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou, PR China
| | - Jinchang Ding
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou, PR China
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43
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Rongalite® promoted highly regioselective synthesis of β-hydroxy sulfides by ring opening of epoxides with disulfides. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.04.085] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Zuo B, Chen JX, Liu MC, Wu HY, Su WK. Yb(OTf)3-catalyzed synthesis of pyrroles under solvent-free conditions. CHINESE CHEM LETT 2009. [DOI: 10.1016/j.cclet.2008.12.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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45
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ZHU J, LI R, GE Z, CHENG T, LI R. Synthesis ofβ-Hydroxy Sulfides via Thiolysis of Epoxides UsingS-Alkylisothiouronium Salts as Thiol Equivalents in Basic Aqueous Medium. CHINESE J CHEM 2009. [DOI: 10.1002/cjoc.200990132] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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46
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Su WK, Zhu XY, Li ZH. First Vilsmeier-Haack Synthesis of Flavones usingbis-(Trichloromethyl) Carbonate/Dimethylformamide. ORG PREP PROCED INT 2009. [DOI: 10.1080/00304940802710947] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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47
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Xiao HL, Chen JX, Liu MC, Zhu DJ, Ding JC, Wu HY. Trichloroisocyanuric Acid (TCCA) as a Mild and Efficient Catalyst for the Synthesis of 2-Arylbenzothiazoles. CHEM LETT 2009. [DOI: 10.1246/cl.2009.170] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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48
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Su W, Ding K, Chen Z. Cu(OTf)2/Et3N-promoted cyclocondensation of activated α-methylene alkenes and nitroolefins: a novel one-pot synthesis of polysubstituted benzenes. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2008.11.081] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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49
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Zhu D, Chen J, Wu D, Liu M, Ding J, Wu H. An Efficient, Catalyst- and Solvent-Free Synthesis of imidazo[1,2-a]pyridines and 2,4-disubstituted thiazoles on Grinding. JOURNAL OF CHEMICAL RESEARCH 2009. [DOI: 10.3184/030823409x401844] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An efficient synthesis of imidazo[1,2- a]pyridines and 2,4-disubstituted thiazoles in excellent yield under catalyst-and solvent-free conditions at room temperature on grinding has been developed. The important features of this method are that it is reasonably fast, very clean, high yielding, simple workup and environmentally benign.
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Affiliation(s)
- Dongjian Zhu
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325027, P.R. China
| | - Jiuxi Chen
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325027, P.R. China
| | - Dengze Wu
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325027, P.R. China
| | - Miaochang Liu
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325027, P.R. China
| | - Jinchang Ding
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325027, P.R. China
- Wenzhou Vocational and Technical College, Wenzhou, 325035, P. R. China
| | - Huayue Wu
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325027, P.R. China
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50
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Bergmeier SC, Lapinsky DJ. Chapter 3: Three-membered ring systems. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/s0959-6380(09)70007-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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