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Synthesis 2006(22): 3849-3854
DOI: 10.1055/s-2006-950306
DOI: 10.1055/s-2006-950306
PAPER
© Georg Thieme Verlag Stuttgart · New York
Solvent-Free Synthesis of γ-Nitroketones and γ-Nitroesters Promoted by the Ionic Liquid/K2CO3 Catalytic System
Further Information
Received
22 June 2006
Publication Date:
09 October 2006 (online)
Publication History
Publication Date:
09 October 2006 (online)
Abstract
A convenient solvent-free synthesis of γ-nitroketones and γ-nitroesters based on the reaction of nitroalkanes with α,β-unsaturated carbonyl compounds in the ultrasonically activated heterogeneous catalytic system 1-butyl-3-methylimidazolium tetra-fluoroborate ([bmim][BF4])/K2CO3 has been developed. The system retained its catalytic activity over three reaction cycles.
Key words
Michael additions - ionic liquids - catalysis - esters - ketones
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