Synthesis of Benzylic Alcohols by Decarboxylative Hydroxylation

Org Lett. 2023 Jan 13;25(1):47-52. doi: 10.1021/acs.orglett.2c03741. Epub 2022 Dec 23.

Abstract

Herein, we demonstrate an efficient method for the decarboxylative hydroxylation of carboxylic acids with silver(I) as the catalyst and cerium ammonium nitrate as the oxidant and its utility in chemoselective late-stage functionalization of natural products and drug molecules. The chemoselectivity of this protocol arises from a benzylic nitrate intermediate that retards further oxidation and is hydrolyzed to the final benzylic alcohol product. Mechanistic investigation reveals that the facile oxidation of silver carboxylate affords silver(II) species as an intermediate oxidant responsible for decarboxylation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benzyl Alcohol*
  • Carboxylic Acids
  • Hydroxylation
  • Molecular Structure
  • Oxidants
  • Silver*

Substances

  • Silver
  • Benzyl Alcohol
  • Carboxylic Acids
  • Oxidants