Direct Acyl Radical Addition to 2H-Indazoles Using Ag-Catalyzed Decarboxylative Cross-Coupling of alpha-Keto Acids

作者：Bogonda Ganganna; Kim Hun Young; Oh Kyungsoo^*

来源：Organic Letters, 2018, 20(9): 2711-2715.

DOI：10.1021/acs.orglett.8b00920

A direct acyl radical addition to 2H-indazoles has been achieved for the first time, where the less-aromatic quinonoid 2H-indazoles readily accepted radical species to the C-3 position. Motivated by the lack of direct acylation strategy for 2H-indazoles, the current method utilizes the radical acceptability of 2H-indazoles, discovering an ambient temperature reaction to provide facile access to a diverse array of 3-aryl-2H-indazoles with three points of structural diversification in 25%-83% yields.

• 出版日期2018-5-4