Hydrogel supported vinylimidazole based PEPPSI-Pd-NHC catalysts: The catalytic activities in Heck and Suzuki-Miyaura coupling reactions
Küçük Resim Yok
Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
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.
Açıklama
Anahtar Kelimeler
Heterogeneous catalysts, Suzuki-miyaura and Heck reactions, Polymer-based catalysts, PEPPSI-Pd-NHC
Kaynak
Journal of Molecular Structure
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
1209
