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Zhong LJ, Fan JH, Chen P, Huang PF, Xiong BQ, Tang KW, Liu Y. Recent advances in ring-opening of cyclobutanone oximes for capturing SO 2, CO or O 2via a radical process. Org Biomol Chem 2023; 22:10-24. [PMID: 38018531 DOI: 10.1039/d3ob01762a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Cyclobutanone oximes and their derivatives are pivotal core structural motifs in organic chemistry. Iminyl-radical-triggered C-C bond cleavage of cyclobutanone oximes delivers an efficient strategy to produce stable distal cyano-substituted alkyl radicals, which can capture SO2, CO or O2 to form cyanoalkylsulfonyl radicals, cyanoalkylcarbonyl radicals or cyanoalkoxyl radicals under mild conditions. In the past several years, cyanoalkylsulfonylation/cyanoalkylcarbonyaltion/cyanoalkoxylation has attracted a lot of interest. In this updated report, the strategies for trapping SO2, CO or O2via iminyl-radical-triggered ring-opening of cyclobutanone oximes are summarized.
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Affiliation(s)
- Long-Jin Zhong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Jian-Hong Fan
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Pu Chen
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Peng-Fei Huang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Yu Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
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2
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Ye S, Zhuang C, Lv J, Zhang C, Chen Q, Wu Z, Wu J, Xia H. A three-component reaction of cyclobutanone oxime esters, sulfur dioxide and N-alkyl- N-methacryloyl benzamides. Org Biomol Chem 2023; 21:9021-9028. [PMID: 37927060 DOI: 10.1039/d3ob01439h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
A three-component reaction of cyclobutanone oxime esters, DABCO·(SO2)2 and N-alkyl-N-methacryloyl benzamides is described. This reaction proceeds without the addition of any oxidant or transition metal, affording sulfonyl-containing isoquinoline-1,3-(2H,4H)-diones in moderate to good yields. Various functional groups are tolerated well in this transformation. Mechanistic studies suggest that a radical pathway is involved, including β-scission, sulfur dioxide insertion, and intramolecular cyclization processes.
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Affiliation(s)
- Shengqing Ye
- Department of Biochemistry & Research Center of Clinical Pharmacy of the First Affiliated Hospital, Zhejiang University School of medicine, Hangzhou 310058, China.
- Taizhou Central Hospital (Taizhou University Hospital) & School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China.
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou 311121, China
| | - Chen Zhuang
- Alberta Institute, Wenzhou Medical University, Wenzhou 325035, China
| | - Jiajing Lv
- Taizhou Central Hospital (Taizhou University Hospital) & School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China.
| | - Chao Zhang
- Taizhou Central Hospital (Taizhou University Hospital) & School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China.
| | - Qi Chen
- Taizhou Central Hospital (Taizhou University Hospital) & School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China.
| | - Zhiyuan Wu
- Taizhou Central Hospital (Taizhou University Hospital) & School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China.
| | - Jie Wu
- Taizhou Central Hospital (Taizhou University Hospital) & School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China.
| | - Hongguang Xia
- Department of Biochemistry & Research Center of Clinical Pharmacy of the First Affiliated Hospital, Zhejiang University School of medicine, Hangzhou 310058, China.
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou 311121, China
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Zhang Y, Han B, Gu X, Wang K, Liang S. Mn(OAc) 3-Promoted Sulfonation- ipso-Cyclization Cascade via the SO 3- Radical: The Synthesis of Spirocyclic Sulfonates. J Org Chem 2023; 88:14140-14155. [PMID: 37718492 DOI: 10.1021/acs.joc.3c01684] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
A radical sulfonation-ipso-cyclization cascade promoted by Mn(OAc)3·2H2O using functionalized alkynes or alkenes and potassium metabisulfite (K2S2O5) is reported. A total of 30 spirocyclic sulfonates were synthesized under mild conditions. We also demonstrate a modular synthesis approach in multiple steps for the preparation of various azaspiro[4,5]-trienone-based sulfonamides and sulfonate esters.
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Affiliation(s)
- Yan Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University Medical College, No.1 Ningde Road, 266071 Qingdao, China
| | - Bingxu Han
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University Medical College, No.1 Ningde Road, 266071 Qingdao, China
| | - Xin Gu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu 610041, China
| | - Kaixuan Wang
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University Medical College, No.1 Ningde Road, 266071 Qingdao, China
| | - Shuai Liang
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University Medical College, No.1 Ningde Road, 266071 Qingdao, China
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4
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Zhang KY, Long F, Peng CC, Liu JH, Hu YC, Wu LJ. Multicomponent Sulfonylation of Alkenes to Access β-Substituted Arylsulfones. J Org Chem 2023; 88:3772-3780. [PMID: 36877592 DOI: 10.1021/acs.joc.2c03036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
A novel multicomponent sulfonylation of alkenes is described for the assembly of various β-substituted arylsulfones using cheap and easily available K2S2O5 as a sulfur dioxide source. Of note, the procedure does not need any extra oxidants and metal catalysts and exhibits a relatively wide substrate scope and good functional group compatibility. Mechanistically, an initial arylsulfonyl radical is formed involving the insertion of sulfur dioxide with aryl diazonium salt, followed by alkoxyarylsulfonylation or hydroxysulfonylation of alkenes.
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Affiliation(s)
- Kai-Yi Zhang
- College of Sciences, Central South University of Forestry and Technology, Changsha 410004, China
| | - Fang Long
- College of Sciences, Central South University of Forestry and Technology, Changsha 410004, China.,Department of Hunan Cuisine, Changsha Commerce & Tourism College, Changsha 410116, China
| | - Chuan-Chong Peng
- College of Sciences, Central South University of Forestry and Technology, Changsha 410004, China
| | - Jin-Hui Liu
- College of Sciences, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yun-Chu Hu
- College of Sciences, Central South University of Forestry and Technology, Changsha 410004, China
| | - Li-Jun Wu
- College of Sciences, Central South University of Forestry and Technology, Changsha 410004, China
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5
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Recent Advances in Molecule Synthesis Involving C-C Bond Cleavage of Ketoxime Esters. Molecules 2023; 28:molecules28062667. [PMID: 36985637 PMCID: PMC10058904 DOI: 10.3390/molecules28062667] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 03/18/2023] Open
Abstract
The synthetic strategies of oxime derivatives participating in radical-type reactions have been rapidly developed in the last few decades. Among them, the N–O bond cleavage of oxime esters leading to formation of nitrogen-centered radicals triggers adjacent C–C bond cleavage to produce carbon-centered free radicals, which has been virtually used in organic synthesis in recent years. Herein, we summarized the radical reactions involving oxime N–O bond and C–C bond cleavage through this special reaction form, including those from acyl oxime ester derivatives and cyclic ketoxime ester derivatives. These contents were systematically classified according to different reaction types. In this review, the free radical reactions involving acyl oxime esters and cyclic ketoxime esters after 2021 were included, with emphasis on the substrate scope and reaction mechanism.
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Lighting Up the Organochalcogen Synthesis: A Concise Update of Recent Photocatalyzed Approaches. Catalysts 2023. [DOI: 10.3390/catal13030520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023] Open
Abstract
This review describes the recent advances in photocatalyzed reactions to form new carbon–sulfur and carbon–selenium bonds. With a total of 136 references, of which 81 articles are presented, the authors introduce in five sections an updated picture of the state of the art in the light-promoted synthesis of organochalcogen compounds (from 2019 to present). The light-promoted synthesis of sulfides by direct sulfenylation of C–C π-bonds; synthesis of sulfones; the activation of Csp2–N bond in the formation of Csp2–S bonds; synthesis of thiol ester, thioether and thioacetal; and the synthesis of organoselenium compounds are discussed, with detailed reaction conditions and selected examples for each protocol.
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Qu Z, Ji X, Tian L, Mao G, Deng GJ, Huang H. TBHP-mediated photochemical coupling/cyclization of N-arylacrylamides with thiols. Org Biomol Chem 2023; 21:940-944. [PMID: 36602241 DOI: 10.1039/d2ob02187k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The effective photoredox-mediated oxidative thiolation and cyclization of N-arylacrylamides with thiols leads to biologically interesting 3-thionated oxindoles through C-S and C-C bond formation. This process represents a straightforward reaction that starts from non-prefunctionalized thiolating reagents. Mechanistic studies demonstrated that the TBHP serves as a key radical initiator with visible-light catalysis.
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Affiliation(s)
- Zhonghua Qu
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
| | - Xiaochen Ji
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
| | - Lin Tian
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
| | - Guojiang Mao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China. .,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
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Ma H, Li Y, Wang P, Ye J, Zhang J, Liu G, Wu J. Photoredox-catalyzed intermolecular azidosulfonylation of alkenes with DABCO·(SO 2) 2, trimethylsilyl azide and thianthrenium salts. Org Chem Front 2023. [DOI: 10.1039/d2qo01706g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Synthesis of β-azido alkylsulfones through a photoredox-catalyzed azido sulfonylation of alkenes with DABCO·(SO2)2, trimethylsilyl azide and alkyl thianthrenium salts is developed.
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Affiliation(s)
- Huiling Ma
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Yanzhi Li
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Peiqi Wang
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Jiamin Ye
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Jun Zhang
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Gang Liu
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Jie Wu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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9
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Ying S, Liu X, Guo T, Li X, Zhou M, Wang X, Zhu M, Jiang H, Gui QW. Ultrasound-assisted bromination of indazoles at the C3 position with dibromohydantoin. RSC Adv 2022; 13:581-585. [PMID: 36605629 PMCID: PMC9773018 DOI: 10.1039/d2ra06867b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
Bromoaryl compounds have attracted great attention in organic chemistry, especially for the synthesis of pharmaceutical intermediates. Herein, we demonstrated a novel and efficient bromination protocol of indazoles via C-H bond cleavage to give site-specific 3-bromide products that could be further employed as synthetic blocks to prepare drugs. The reaction used DBDMH as a bromine source, tolerated a wide range of indazoles, and finished in 30 min under mild, ultrasound-assisted conditions. Besides, preliminary mechanistic studies revealed that this approach was not a radical process.
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Affiliation(s)
- Shengneng Ying
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Xingru Liu
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Tao Guo
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Xuan Li
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Min Zhou
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Xia Wang
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Mengxue Zhu
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Hongmei Jiang
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Qing-Wen Gui
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
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Tang S, Shen Q, He P, Li J, Yang J, Si X, Xia J, Han Y, Li Z, Liu C, Gui QW. Synthesis of esters from 2-phenylimidazo[1,2-a]pyridines using visible light. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Jia X, Luo L, Huang C, Zhang X, Lian Z. Iron-Catalyzed Sulfonylthiocyanation of α,β-Unsaturated Amides/Esters via the Insertion of Sulfur Dioxide. Org Lett 2022; 24:7560-7565. [PMID: 36222520 DOI: 10.1021/acs.orglett.2c02954] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An iron-catalyzed four-component sulfonylthiocyanation between α,β-unsaturated amides/esters, TMSNCS, aryldiazonium tetrafluoroborates, and sulfur dioxide (from SOgen) is demonstrated. This protocol is characterized by mild reaction conditions, good functional group compatibility, broad substrate scope, and good to excellent yields, providing a feasible method for the preparation of β-thiocyanated sulfone compounds. The preliminary mechanism investigation shows that a radical pathway may be involved in the process.
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Affiliation(s)
- Xiuwen Jia
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Liping Luo
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Chunxi Huang
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Xuemei Zhang
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Zhong Lian
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
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A copper-catalyzed three-component reaction of alkenes, cycloketone oximes and DABCO·(SO2)2: Direct C(sp2)-H cyanoalkylsulfonylation. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.11.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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13
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Cheng H, Luo Y, Lam TL, Liu Y, Che CM. Visible-light-induced radical cascade reaction to prepare oxindoles via alkyl radical addition to N-arylacryl amides. Org Chem Front 2022. [DOI: 10.1039/d2qo01140a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photochemical approach towards oxindoles with C3 quaternary centers by the radical cascade reaction of α,β-unsaturated N-arylacryl amides with alkyl bromides or iodides upon visible light irradiation under mild reaction conditions was developed.
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Affiliation(s)
- Hanchao Cheng
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
| | - Yunfeng Luo
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
| | - Tsz-Lung Lam
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Yungen Liu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
| | - Chi-Ming Che
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
- HKU Shenzhen Institute of Research and Innovation, Shenzhen, Guangdong 518057, P. R. China
- Laboratory for Synthetic Chemistry and Chemical Biology Limited, Units 1503-1511, 15/F., Building 17W, Hong Kong Science Park, New Territories, Hong Kong, China
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