Synthesis of Biaryl Ethers by the Copper-Catalyzed Chan-Evans-Lam Etherification from Benzylic Amine Boronate Esters

J Org Chem. 2016 Sep 2;81(17):7963-9. doi: 10.1021/acs.joc.6b01254. Epub 2016 Aug 23.

Abstract

The copper-catalyzed etherification of ortho-borylated benzylic amines with phenols has been achieved to provide biaryl ethers that are prevalent in biologically active compounds. A variety of substitution patterns on the aryl boronate ester and the phenol are tolerated under the reaction conditions, providing moderate to high yields. A competition reaction between phenol and aniline revealed condition-dependent selectivity in which the phenol could be highly favored over the aniline.

Publication types

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