Title: Catalytic activity of MCM-41-TBD in the selective preparation of carbamates and unsymmetrical alkyl carbonates from diethyl carbonate
Authors: Carloni, S ×
De Vos, Dirk
Jacobs, Pierre
Maggi, R
Sartori, G
Sartorio, R #
Issue Date: 2002
Series Title: Journal of catalysis vol:205 issue:1 pages:199-204
Conference: date:Univ Parma, Dipartimento Chim Organ & Ind, I-43100 Parma, Italy; Katholieke Univ Leuven, Ctr Surface Sci & Catalysis, B-3001 Louvain, Belgium
Abstract: The synthesis of carbamates 3 and unsymmetrical alkyl carbonates 5 by reaction of diethyl carbonate with aliphatic amines or alcohols has been realized by using as heterogeneous catalyst a hybrid organic-inorganic material prepared by anchoring TBD to MCM-41 silica. Products are obtained in high yield and very good selectivity and the solid catalyst can be recovered simply by filtration and reused for different cycles without apparent lowering of activity. A supported N-carbethoxyguanidinium active intermediate is proposed, and some spectroscopic data are shown to support the mechanistic hypothesis. (C) 2002 Elsevier Science.
ISSN: 0021-9517
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
× corresponding author
# (joint) last author

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