Photosynthesis of 3-Alkylated Coumarins from Carboxylic Acids Catalyzed by a Na<sub>2</sub>S-Based Electron Donor–Acceptor Complex
作者:Hai-Yang Song、Mei-Yi Liu、Jing Huang、Dan Wang、Jun Jiang、Jin-Yang Chen、Tian-Bao Yang、Wei-Min He
DOI:10.1021/acs.joc.2c02679
日期:2023.2.17
strategy to synthesize various 3-alkylated coumarins from easily available coumarins and naturally abundant carboxylicacids under photocatalyst-, oxidant-, and additive-free and mild conditions is reported. Using Na2S as the catalytic electron donor, a series of primary, secondary, and tertiary carbon radicals can be efficiently generated, and the EDA complex can be regenerated without an alkaline additive