Hydrogel supported vinylimidazole based PEPPSI-Pd-NHC catalysts: The catalytic activities in Heck and Suzuki-Miyaura coupling reactions


BOZTEPE C., KÜNKÜL A., GÜRBÜZ N.

JOURNAL OF MOLECULAR STRUCTURE, cilt.1209, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1209
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.molstruc.2020.127948
  • Dergi Adı: JOURNAL OF MOLECULAR STRUCTURE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chimica, Compendex, INSPEC
  • Anahtar Kelimeler: Heterogeneous catalysts, Suzuki-miyaura and Heck reactions, Polymer-based catalysts, PEPPSI-Pd-NHC, HETEROCYCLIC CARBENE COMPLEXES, METAL-CONTAINING MONOMERS, PALLADIUM CATALYST, REUSABLE CATALYST, ARYL BROMIDES, EFFICIENT, NANOPARTICLES, SONOGASHIRA, POLYMERIZATION, TEMPERATURE
  • İnönü Üniversitesi Adresli: Evet

Özet

Increasing environmental awareness and limited raw material resources have increased the importance of catalysts by leading to green technology. For this purpose, there is a need for efficient, new, selective, reusable, environmentally friendly catalysts and catalytic systems. In this study, PEPPSI (pyridine enhanced precatalyst preparation, stabilization, and initiation) type and vinylimidazole (VI) based palladium complexes of N-heterocyclic carbenes (PEPPSI-Pd-NHCs) which have catalytic activity in homogeneous Suzuki and Heck reactions were prepared. To obtain environmentally safe polymeric heterogeneous catalysts, this novel PEPPSI-Pd-NHC complexes were polymerized with Acrylamide (AAm) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS) by free radical polymerization. Characterization of PEPPSI-Pd-NHC complexes and polymer supported catalysts were made by using various elemental and structural analyses techniques. The synthesized polymeric supported heterogeneous catalysts have high activity, stability and reusability for Suzuki and Heck reaction of aryl bromides in aqueous media. (C) 2020 Elsevier B.V. All rights reserved.