Microwave assisted suzuki-miyaura and ullmann type homocoupling reactions of 2- and 3-halopyridines using a Pd(OAc)2/benzimidazolium salt and base catalyst system

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Yilmaz Ü., Deniz S., KÜÇÜKBAY H., Şireci N.

Molecules, vol.18, no.4, pp.3712-3724, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 4
  • Publication Date: 2013
  • Doi Number: 10.3390/molecules18043712
  • Journal Name: Molecules
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3712-3724
  • Keywords: Homocoupling, Microwave, N-heterocyclic carbene, Pyridine derivatives, Suzuki-Miyaura reaction
  • Hakkari University Affiliated: Yes

Abstract

A number of novel benzimidazole derivatives 1-4 were synthesized and the catalytic activity of these compounds in a catalytic system consisting of a benzimidazolium salt/Pd(OAc)2/K2CO3 were investigated in the Suzuki-Miyaura and Ullmann type homocoupling reactions under microwave irradiation. We obtained both cross coupling and homocoupling products of pyridine and some side products such as dimethylaminopyridine and unsubstituted pyridine. © 2013 by the authors.