Palladium(II) N-heterocyclic carbene complexes as catalysts for the direct arylation of pyrrole derivatives with aryl chlorides


Yigit B., GÜRBÜZ N. , Yigit M., Dagdeviren Z., ÖZDEMİR İ.

INORGANICA CHIMICA ACTA, vol.465, pp.44-49, 2017 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 465
  • Publication Date: 2017
  • Doi Number: 10.1016/j.ica.2017.05.047
  • Title of Journal : INORGANICA CHIMICA ACTA
  • Page Numbers: pp.44-49

Abstract

Silver(I) N-heterocyclic carbene complexes were synthesized in good yields by the reactions of 1,3-dialkylperhydrobenzimidazolyum salts with silver(I) oxide and used as transmetallation reagents for the synthesis of palladium(II) N-heterocyclic carbene complexes. All of the complexes were characterized using elemental analysis, H-1 NMR and C-13 NMR spectroscopy. The catalytic activity of Pd(II)-NHC complexes in the direct arylation of pyrrole derivatives was investigated. These Pd(II)-NHC complexes showed the good catalytic performance for the direct arylation of pyrrole derivatives with readily available and inexpensive aryl chlorides. The arylation reactions regioselectively produced C2- or C5-arylation products in moderate to good yields by using 1 mol% of the palladium complex. (C) 2017 Elsevier B.V. All rights reserved.