Palladium(0) nanoparticles encapsulated in diamine-modified glycidyl methacrylate polymer (GMA-CHDA) applied as catalyst of Suzuki–Miyaura cross-coupling reaction

Autor:	Józef J. Ziółkowski, Janina Okal, Wiktor Bukowski, Anna M. Trzeciak, Jarosław Noworól, Agnieszka Bukowska, Ewa Mieczyńska
Rok vydání:	2008
Předmět:	chemistry.chemical_classification Glycidyl methacrylate Chemistry Reducing agent chemistry.chemical_element General Chemistry Polymer Catalysis Coupling reaction chemistry.chemical_compound Diamine Polymer chemistry Materials Chemistry Phenylboronic acid Palladium
Zdroj:	New Journal of Chemistry. 32:1124
ISSN:	1369-9261 1144-0546
Popis:	Cyclohexyldiamine-modified glycidyl methacrylate polymer (GMA-CHDA) in the form of gel-type beads was used to encapsulate Pd(0) nanoparticles 4–15 nm in diameter and applied as a new, reusable catalyst for the Suzuki–Miyaura cross-coupling reaction of 2- and 4-bromotoluene with phenylboronic acid. It was found that the precatalyst preparation methodology strongly influenced its catalytic activity. The best results (100% yield of the product) were obtained when GMA-CHDA was first treated with hydrazine (reducing agent for Pd(II)) and next with PdCl2 solution. The new catalyst acts heterogeneously, and the post-reaction solution after catalyst separation is not catalytically active, suggesting that there is no leaching.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::26384f269baa4da5e146c90bb36a86d0 https://doi.org/10.1039/b717995b Zobrazit plný text záznamu