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HFIP-catalyzed direct dehydroxydifluoroalkylation of benzylic and allylic alcohols with difluoroenoxysilanes†
Jinshan Li,Wenxue Xi,Rong Zhong,Jianguo Yang,Lei Wang,Hanfeng Ding,Zhiming Wang
Chemical Communications Pub Date : 12/21/2020 00:00:00 , DOI:10.1039/D0CC06980A
Abstract

Hexafluoroisopropanol (HFIP)-catalyzed direct dehydroxydifluoroalkylation of benzylic and allylic alcohols with difluoroenoxysilanes is developed. This procedure enables the synthesis of a broad range of α,α-difluoroketones, a class of highly valuable intermediates and building blocks in medicinal and organic chemistry. Here, we have demonstrated for the first time that HFIP could act as a powerful catalyst for fluorinated carbon–carbon bond formation. The application of this protocol in late-stage dehydroxydifluoroalkylation of potentially bioactive drugs and natural products has also been carried out.

Graphical abstract: HFIP-catalyzed direct dehydroxydifluoroalkylation of benzylic and allylic alcohols with difluoroenoxysilanes
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