(DHQD)(2)PHAL catalyzed enantioselective chlorocyclization of indole derived benzamides was realized. Spiro-indolines containing a continuous quaternary carbon center and tertiary carbon center were obtained in good yields with excellent enantioselectivity (up to 90% yield and 96% ee).
(
DHQD)(2) 中的 PHAL 催化了 1-苯
胺类不
安定的映射选择性
氯环化反应,得到了含有连续四价碳中心和三价碳中心的透环-孤对结构的 spiro-indolines, 其产率在 excellent 青睐下(高达90%以上,并且达到了96%的映射纯度)。