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, cilt.449, ss.172-182, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 449
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.apcata.2012.09.048
  • Dergi Adı: APPLIED CATALYSIS A-GENERAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.172-182
  • Anahtar Kelimeler: 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
  • Yozgat Bozok Üniversitesi Adresli: Hayır

Özet

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.