Synthesis of α-Difluoromethyl Aryl Ketones through a Photoredox Difluoromethylation of Enol Silanes
作者:Elias Selmi-Higashi、Jinlei Zhang、Xacobe C. Cambeiro、Stellios Arseniyadis
DOI:10.1021/acs.orglett.1c01177
日期:2021.6.4
We report here an efficient and highly straightforward access to α-difluoromethylated ketones through a visible light-mediated difluoromethylation of readily available enol silanes. The method, which takes advantage of the polyvalence of Hu’s reagent, N-tosyl-S-difluoromethyl-S-phenylsulfoximine, used here as a CHF2 radical precursor under catalytic photoredox conditions, is practical, scalable, and
我们在这里报告了通过可见光介导的现成烯醇硅烷的二氟甲基化来高效且高度直接地获得 α-二氟甲基化酮。的方法,它接受胡的试剂的多价的优点,Ñ甲苯磺酰小号-difluoromethyl-小号-phenylsulfoximine,这里用作CHF 2催化photoredox条件下自由基前体,是实用的,可扩展的,并且提供了相应的α-CHF 2酮的产率很好。