Pentafluorophenyl Esters: Highly Chemoselective Ketyl Precursors for the Synthesis of α,α-Dideuterio Alcohols Using SmI<sub>2</sub> and D<sub>2</sub>O as a Deuterium Source
作者:Hengzhao Li、Yuxia Hou、Chengwei Liu、Zemin Lai、Lei Ning、Roman Szostak、Michal Szostak、Jie An
DOI:10.1021/acs.orglett.9b04383
日期:2020.2.21
We report the first highly chemoselective synthesis of α,α-dideuterio alcohols with exquisite incorporation of deuterium (>98% [D2]) using pentafluorophenyl esters as ketyl radical precursors, SmI2 as a mild reducing agent, and D2O as the deuterium source. This system tolerates a variety of functional groups, offering rapid entry to valuable α,α-dideuterated alcohol building blocks. More generally
我们报道了使用五氟苯基酯作为酮基自由基前体,SmI2作为温和的还原剂以及D2O作为氘源的氘(≥98%[D2])的精细掺入,首次高度化学选择性地合成α,α-二氘代乙醇。该系统可耐受多种功能基团,可快速进入有价值的α,α-二氘代醇构建基块。更一般地,该报告介绍了五氟苯基酯,这是迄今为止报道的最具反应性的O-酮基前体。