Superb efficient and recycle polymer-anchored systems for palladium catalyzed Suzuki cross-coupling reactions in water


Siga F., Temel H. , Aydemir M., Ocak Y. S. , Pasa S., Baysal A.

APPLIED CATALYSIS A-GENERAL, vol.449, pp.172-182, 2012 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 449
  • Publication Date: 2012
  • Doi Number: 10.1016/j.apcata.2012.09.048
  • Title of Journal : APPLIED CATALYSIS A-GENERAL
  • Page Numbers: pp.172-182
  • Keywords: Polymer-anchored Pd(II) complex, Catalysis, Suzuki cross-coupling reaction, Water, Aryl halides, SCHIFF-BASE COMPLEX, SUPPORTED PALLADIUM, SPECTRAL CHARACTERIZATION, HIGHLY EFFICIENT, MIYAURA REACTION, METAL-COMPLEXES, ARYL CHLORIDES, HECK REACTION, PD, NANOPARTICLES

Abstract

A set of three new polymer-anchored palladium(II) Schiff base catalysts have been synthesized, characterized and their catalytic activity was investigated in the Suzuki cross-coupling reaction between aryl halides and arylboronic acid in the presence of Cs2CO3 as a base. They show excellent catalytic activity in coupling of aryl bromides or aryl iodide with phenylboronic acid under the optimized reaction conditions in water. Polymer-anchored Pd(II) complexes provided turnover frequency of 29,700 or 58,200 h(-1) in Suzuki coupling reactions of phenylboronic acid with p-bromoacetophenone or p-iodobenzene, respectively, which are the highest values ever reported for the Suzuki coupling reactions in water as sole solvent. The catalyst 1 could be used for 15 reaction cycles in the Suzuki coupling of p-acetobromobenzene at 100 degrees C with no loss of catalytic activity. (C) 2012 Elsevier B.V. All rights reserved.