Heterogenization of homogeneous NHC-Pd-pyridine catalysts and investigation of their catalytic activities in Suzuki-Miyaura coupling reactions

BOZTEPE C., KÜNKÜL A., YAŞAR S., GÜRBÜZ N.

JOURNAL OF ORGANOMETALLIC CHEMISTRY, cilt.872, ss.123-134, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 872
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.jorganchem.2018.07.004
  • Dergi Adı: JOURNAL OF ORGANOMETALLIC CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.123-134
  • Anahtar Kelimeler: NHC-Pd-pyridine, Hydrogel, Polymer-based catalysts, Suzuki-Miyaura reactions, Heterogeneous catalyst, HETEROCYCLIC CARBENE COMPLEXES, PALLADIUM CATALYST, ARYLBORONIC ACIDS, PEPPSI COMPLEXES, AQUEOUS-MEDIA, HYDROGELS, WATER, NANOPARTICLES, TEMPERATURE, MONOMERS
  • İnönü Üniversitesi Adresli: Evet

Özet

New generation, novel, environmentally safe polymeric heterogeneous catalysts which included catalytically active NHC-Pd-pyridine complexes were prepared by radical polymerization of NHC-Pd-pyridine complexes with Acrylamide (AAm) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS) monomers in the presence of N,N'-methylenebisacrylamide (MBA) crosslinker. Structural characterization of NHCPd-pyridine complexes was conducted by using NMR, FT-IR while the structural characterization of crosslinked polymeric catalyst systems was made by using FT-IR, SEM, SEM-EDX, TEM and TGA analysis techniques. The synthesized polymer-based NHC-Pd-pyridine catalysts showed good catalytic activity for Suzuki reaction of aryl bromides with phenylboronic acid in aqueous media. They exhibited good stability and they could be reused at least five times without remarkable loss of catalytic activity. (C) 2018 Elsevier B.V. All rights reserved.