ORBi: Sacco Luigi - Olefin cyclopropanation and insertion into O-H bonds mediated by copper(I) and palladium(II) covalently anchored to silica xerogels

Reference : Olefin cyclopropanation and insertion into O-H bonds mediated by copper(I) and palladium...


	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Materials science & engineering Engineering, computing & technology : Chemical engineering
	To cite this reference:	http://hdl.handle.net/2268/20070

Title :	Olefin cyclopropanation and insertion into O-H bonds mediated by copper(I) and palladium(II) covalently anchored to silica xerogels
Language :	English
Author, co-author :	Sacco, Luigi [> > > >]
	Lambert, Stéphanie [Centre Hospitalier Universitaire de Liège - CHU > Département de Chimie appliquée > Génie chimique - Chimie physique appliquée > >]
	Pirard, Jean-Paul [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Chimie physique appliquée > >]
	Noels, Alfred [Université de Liège - ULg > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences) >]
Publication date :	2005
Journal title :	Journal of Catalysis
Publisher :	Academic Press
Volume :	232
Issue/season :	1
Pages :	51-59
Audience :	International
ISSN :	0021-9517
City :	San Diego
Country :	CA
Keywords :	[en] cyclopropanation ; insertion ; sol-gel ; xerogel ; pyrazolylpyridine
Abstract :	[en] Copper(I) and palladium(II) ligated to pyrazolylpyridine hearing a tethered (trimethoxysilyl)propyl group in position 4 of the pyrazole ring were chemically bonded to silica via a sol-gel process. The textural properties of the materials (Specific Surface area, porous volume, and pore size distribution) were characterized by nitrogen adsorption-desorption isotherms, mercury porosimetry, and TEM analysis. The hybrid materials were tested as catalysts in olefin cyclopropanation and as potential chemoselective catalysts in the reaction with unsaturated alcohols (double bond versus -OH group), with ethyl diazoacetate as a carbene precursor, and compared with the corresponding homogeneous complexes. © 2005 Elsevier Inc. All rights reserved.
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Permalink :	http://hdl.handle.net/2268/20070
DOI :	10.1016/j.jcat.2005.03.004

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