Palladium-Catalyzed <i>ortho</i>-C–H Methylation of Benzoic Acids
作者:Weiwei Lv、Si Wen、Jing Liu、Guolin Cheng
DOI:10.1021/acs.joc.9b01204
日期:2019.8.2
palladium-catalyzed methylation of C–H bonds of benzoicacids with di-tert-butyl peroxide as the methylating reagent under an external oxidant and ligand-free conditions has been achieved. The reaction is found to be directed by a weakly coordinating carboxyl group, offering a facile route for the synthesis of highly functionalized ortho-methyl benzoicacids.