Access to <i>gem</i>-Difluoro Olefins via C–H Functionalization and Dual Role of Anilines
作者:Zhen Yang、Chao Pei、Rene M. Koenigs
DOI:10.1021/acs.orglett.0c02568
日期:2020.9.18
In this Letter, we describe a simple, practical approach in which cheap CuI was used as a catalyst to introduce a gem-difluoro olefin onto simple electron-rich aniline derivatives in good yield via direct C–H functionalization and a subsequent HF elimination reaction. Detailed mechanistic studies point at a dual role of aniline derivatives in this reaction, which serve as a substrate and a basic promoter
在这封信中,我们描述了一种简单,实用的方法,其中廉价的CuI用作催化剂,通过直接的C–H官能化和随后的HF消除反应,以良好的产率将宝石-二氟烯烃引入简单的富电子苯胺衍生物中。详细的机理研究指出,苯胺衍生物在该反应中起着双重作用,它们充当底物和触发HF消除步骤的基本启动子。