Phosphine-Directed sp3 C-H, C-O, and C-N Borylation

J Org Chem. 2020 Nov 20;85(22):14795-14801. doi: 10.1021/acs.joc.0c01706. Epub 2020 Oct 2.

Abstract

Benzylic C-H borylation reactions are limited, requiring new approaches to exploit their reactivity for efficient selective functionalization. The recent development of phosphine-directed C-H borylation of arenes has now been extended to benzylic substrates, providing high yield of the mono- and geminal bis-borylation products. Attempts to borylate the C-H bond α to a benzylic ether or amine resulted in C-O and C-N borylation, followed by C-H borylation to provide geminal bis-borylated products.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.