Transition-Metal-Free Decarboxylative Cyclization of <i>N</i>-Arylacrylamides with 2,2-Difluoro-2-(phenylthio)acetic Acid: Synthesis of Thiodifluorooxindole Derivatives
作者:Cheng-Mi Huang、Jian Li、Shan-Le Wang、Jing-Jing Ai、Xin-Yu Liu、Wei-Dong Rao、Shun-Yi Wang
DOI:10.1021/acs.joc.1c00965
日期:2021.6.18
An efficient transition-metal-free decarboxylative cyclization of N-arylacrylamides with 2,2-difluoro-2-(phenylthio)acetic acid for the construction of thiodifluoroindoleone derivatives is described. This strategy features stable and readily available substrates, mild reaction conditions, and transition-metal-free catalysts. Notably, this protocol has successfully applied to synthesis of gem-difluoroalkenes
描述了用于构建硫代二氟吲哚酮衍生物的N-芳基丙烯酰胺与 2,2-二氟-2-(苯硫基) 乙酸的有效无过渡金属脱羧环化。该策略具有稳定且易于获得的底物、温和的反应条件和不含过渡金属的催化剂。值得注意的是,该协议已成功应用于宝石-二氟烯烃的合成,其存在于众多生物活性化合物中。