Exhaustive Reduction of Esters Enabled by Nickel Catalysis

J Am Chem Soc. 2020 May 6;142(18):8109-8115. doi: 10.1021/jacs.0c02405. Epub 2020 Apr 28.

Abstract

We report a one-step procedure to directly reduce unactivated aryl esters into their corresponding tolyl derivatives. This is achieved by an organosilane-mediated ester hydrosilylation reaction and subsequent Ni/NHC-catalyzed hydrogenolysis. The resulting conditions provide a direct and efficient alternative to multi-step procedures for this transformation that often require the use of hazardous metal hydrides. Applications in the synthesis of -CD3-containing products, derivatization of bioactive molecules, and chemoselective reduction in the presence of other C-O bonds are demonstrated.

Publication types

  • Research Support, Non-U.S. Gov't