Dehydrative Ring‐Opening of
<i>gem</i>
‐Difluorocyclopropyl Carbinols to Allylic Trifluoromethyl and Difluorohalomethyl Derivatives Promated by Titanium Tetrahalide
作者:Manickavasakam Ramasamy、Sheng‐Chu Kuo、Min‐Tsang Hsieh
DOI:10.1002/ejoc.202000820
日期:2020.8.31
An effective approach to (E)‐allylic CF3, (E)‐allylic CF2Cl, (E)‐allylic CF2Br derivatives, 1‐chloro‐2,2‐difluoromethylene, and polyfluorinated compounds has been developed, based on a titanium tetrahalide‐promoted dehydrative ring‐opening of gem‐difluorocyclopropyl carbinols.
基于(E)-烯丙基CF 3,(E)-烯丙基CF 2 Cl,(E)-烯丙基CF 2 Br衍生物,1-氯-2,2-二氟亚甲基和多氟化化合物的有效方法已被开发出来。四卤化钛促进的宝石-二氟环丙基甲醇的脱水开环。