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Bao L, Liu C, Li W, Yu J, Wang M, Zhang Y. Electrochemical Synthesis of Polysubstituted Oxazoles from Ketones and Acetonitrile. Org Lett 2022; 24:5762-5766. [PMID: 35912587 DOI: 10.1021/acs.orglett.2c02252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein we report an electrochemical strategy for the construction of polysubstituted oxazoles from easily available ketones and acetonitrile under room temperature. The method shows high efficiency, a broad substrate scope, and requires no external chemical oxidant. Mechanistic investigations suggest that the reaction proceeds through a Ritter-type reaction/oxidative cyclization using acetonitrile as the reactant and solvent. X-ray crystallographic analysis reveals that the reaction involves the attack of acetonitrile on the carbonyl carbon instead of the α-carbon.
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Affiliation(s)
- Liang Bao
- Department of Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Chen Liu
- Department of Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Wenyi Li
- Department of Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Jiage Yu
- Department of Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Min Wang
- Department of Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yunfei Zhang
- Department of Chemistry, China Agricultural University, Beijing 100193, P. R. China
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Sun R, Yang X, Ge Y, Song J, Zheng X, Yuan M, Li R, Chen H, Fu H. Visible-Light-Induced Oxazoline Formations from N-Vinyl Amides Catalyzed by an Ion-Pair Charge-Transfer Complex. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01755] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Rui Sun
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Xiao Yang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Yicen Ge
- College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, No.1 3rd Road, Erxian Bridge East, Chengdu, Sichuan 610059, P. R. China
| | - Jintong Song
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Xueli Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Maolin Yuan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Ruixiang Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Hua Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Haiyan Fu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
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Sakurai T, Igarashi T. Photoinduced Electron Transfer-Initiated Cyclization Reactions and Asymmetric Transformations of (Z)-α-Dehydroamino Acid Derivatives. HETEROCYCLES 2014. [DOI: 10.3987/rev-13-787] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Sakurai T, Hosoi Y, Igarashi T. SULFUR- AND N-ACYL CARBONYL OXYGEN-ASSISTED HETEROLYSIS OF THE C(=O)–S BOND IN EXCITED-STATE (Z)-N-ACYL-α-DEHYDRO(1-NAPHTHYL)ALANINE THIOESTERS. HETEROCYCLES 2012. [DOI: 10.3987/com-12-s(n)17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Sakurai T, Yoshida A, Igarashi T, Sato Y. Photoinduced Electron Transfer-Initiated Selective Cyclization Reactions of (Z)-N-Benzoyl-α-dehydro(1-naphthyl)alaninamides into 4,5-Dihydrooxazole Derivatives. HETEROCYCLES 2010. [DOI: 10.3987/com-10-11911] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Sakurai T, Sato Y, Haruyama Y, Igarashi T. Diastereoselective Cyclization Reactions of Chiral Proline Auxiliary-Substituted N-Benzoyl-α-dehydro(1-naphthyl)alaninamide Derivatives via Photoinduced Electron Transfer. HETEROCYCLES 2010. [DOI: 10.3987/com-10-s(e)33] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Sakurai T, Maekawa K, Tomoda A, Igarashi T. Efficient Formation of a Triazole Ring via Novel Ring-Opening Reaction of (Z)-2-Methyl-4-arylmethylene-5(4H)-oxazolones with Hydrazides. HETEROCYCLES 2008. [DOI: 10.3987/com-08-11457] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Maekawa K, Hishikawa N, Kubo K, Igarashi T, Sakurai T. Preferential formation of cis-4,5-dihydrooxazole derivatives via photoinduced electron transfer-initiated cyclization of N-acyl-α-dehydroarylalanine alkyl esters. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.08.089] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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