A New Nitrogen Pd(II) Complex Immobilized on Magnetic Mesoporous Silica: A Retrievable Catalyst for C–C Bond Formation

Autor:	Ayat Nuri, Samira Mousavi, Behzad Koohi-Zargar, Yagoub Mansoori
Rok vydání:	2020
Předmět:	010405 organic chemistry Aryl chemistry.chemical_element General Chemistry Mesoporous silica 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Solvent chemistry.chemical_compound chemistry Heck reaction Polymer chemistry Click chemistry Organometallic chemistry Palladium
Zdroj:	Catalysis Letters. 151:1923-1936
ISSN:	1572-879X 1011-372X
DOI:	10.1007/s10562-020-03458-8
Popis:	A new nitrogen ligand, i.e. 1,3-di-(o-aminophenoxy)-2-propyl propargyl ether (DPPE), has been synthesized and characterized. Magnetic mesoporous silica composite (MNP@SiO2-SBA) was obtained via embedding magnetite nano-particles (MNPs) between SBA-15 channels. DPPE palladium dichloride (MNP@SiO2-SBA-DPPE-Pd(II)) was then prepared via click chemistry and fully characterized. The activity and recyclability of supported magnetic Pd(II) catalyst were evaluated in Heck coupling reaction after optimizing the optimal reaction conditions including solvent, amount of catalyst, base and temperature. Aryl iodides and aryl bromides showed enhanced activity compared to those of aryl chlorides in the Heck reaction. The catalyst was easily separated magnetically, reused in five runs sequentially, and no significant loss of activity was observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4209c5566914ffb34c5076f5911cea01 https://doi.org/10.1007/s10562-020-03458-8 Zobrazit plný text záznamu Full text from SpringerLink