Palladium-catalyzed direct (hetero)arylation of ethyl oxazole-4-carboxylate: an efficient access to (hetero)aryloxazoles

J Org Chem. 2008 Sep 19;73(18):7383-6. doi: 10.1021/jo801093n. Epub 2008 Aug 15.

Abstract

A straightforward route toward 2-(hetero)arylated and 2,5-di(hetero)arylated oxazoles through regiocontrolled palladium-catalyzed direct (hetero)arylation of ethyl oxazole-4-carboxylate with iodo-, bromo-, and chloro(hetero)aromatics followed by a two-step hydrolysis/decarboxylation sequence was described. The method was applied here to a neat synthesis of two 2,5-di(hetero)aryloxazole natural products, balsoxin and texaline.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carboxylic Acids / chemical synthesis*
  • Carboxylic Acids / chemistry
  • Catalysis
  • Molecular Structure
  • Oxazoles / chemical synthesis*
  • Oxazoles / chemistry
  • Palladium / chemistry*
  • Stereoisomerism

Substances

  • Carboxylic Acids
  • Oxazoles
  • Palladium