Niu M, Yang C, Leng M, Cao Q, Li M, Shen Z. Visible-Light-Driven Decarboxylative Coupling of 2
H-Indazoles with α-Keto Acids without Photocatalysts and Oxidants.
J Org Chem 2024;
89:6159-6168. [PMID:
38642058 PMCID:
PMC11077484 DOI:
10.1021/acs.joc.4c00176]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 04/03/2024] [Accepted: 04/09/2024] [Indexed: 04/22/2024]
Abstract
An efficient synthesis of functionalized 3-acyl-2H-indazoles via visible-light-induced self-catalyzed energy transfer was developed. This method utilized a self-catalyzed energy transfer process between 2H-indazoles and α-keto acids, offering advantages like absence of photosensitizers, metal catalysts, and strong oxidants, broad substrate compatibility, and operational simplicity under mild conditions.
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