Selective trifluoromethylation and alkynylation of tetrahydroisoquinolines using visible light irradiation by Rose Bengal
作者:Weijun Fu、Wenbo Guo、Guanglong Zou、Chen Xu
DOI:10.1016/j.jfluchem.2012.05.009
日期:2012.8
convenient and efficient method for oxidative coupling of tetrahydroisoquinoline derivatives with trimethyl(trifluoromethyl)silane and terminal alkynes to 1-trifluoromethylated or 1-alkynylated tetrahydroisoquinolines via CH activation was developed using visible light irradiation. The protocol uses Rose Bengal as the catalyst, air as terminal oxidant, and the trifluoromethylation or alkynylation was selectively
利用可见光照射,开发了一种方便有效的方法,将四氢异喹啉衍生物与三甲基(三氟甲基)硅烷和末端炔烃经C H活化氧化偶联为1-三氟甲基化或1-炔基化四氢异喹啉。该方案使用玫瑰红作为催化剂,空气作为末端氧化剂,三氟甲基化或炔基化反应是在极温和的条件下在氮的α位选择性进行的。