SEARCH

SEARCH BY CITATION

Keywords:

  • arylation;
  • benzothiophenes;
  • nickel;
  • palladium

Abstract

We report a new approach to 2,3-diarylbenzo[b]thiophenes based on the nickel-catalyzed Suzuki–Miyaura cross-coupling/palladium-catalyzed decarboxylative arylation sequence of 3-chloro-2-methoxycarbonylbenzo[b]thiophenes, which are readily accessible from the corresponding cinnamic acids. In addition, this methodology can be applied to the concise synthesis of π-extended 2,3,6,7-tetraarylbenzo[1,2-b;4,5-b′]dithiophenes. Their optical properties are also described.