Regio- and Enantioselective Bromocyclization of Difluoroalkenes as a Strategy to Access Tetrasubstituted Difluoromethylene-Containing Stereocenters
作者:Edward Miller、Suhong Kim、Katarina Gibson、Jeffrey S. Derrick、F. Dean Toste
DOI:10.1021/jacs.0c02331
日期:2020.5.13
Difluoromethylene-containing compounds have attracted substantial research interest over the past decades for their ability to mimic biological functions of traditional functional groups while providing a wide variety of pharmacological benefits bestowed by the C-F bond. We report a novel strategy to access RCF2Br-containing heterocycles by regio- and enantioselective bromocyclization of difluoroalkenes
过去几十年来,含二氟亚甲基的化合物因其能够模拟传统官能团的生物功能,同时提供 CF 键赋予的多种药理益处而引起了广泛的研究兴趣。我们报告了一种通过手性阴离子相转移催化实现二氟烯烃的区域选择性和对映选择性溴环化来获得含 RCF2Br 杂环的新策略。通过合成依非韦伦(一种用于治疗艾滋病毒的药物)的类似物,突显了这种方法的实用性。此外,通过对各种对映体富集的含α,α-二氟亚甲基的产物进行官能化,展示了CF2Br中间体的合成多功能性。