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, this report introduces pentafluorophenyl esters as the most reactive O-ketyl precursors reported to date.

中文翻译：

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五氟苯基酯：使用SmI2和D2O作为氘源，用于化学合成α，α-二氘代乙醇的高度化学选择性的乙炔基前体。

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。