Tetrahedron

Ionic liquid as catalyst and solvent: the remarkable effect of a basic ionic liquid,[bmIm] OH on Michael addition and alkylation of active methylene compounds

BC Ranu, S Banerjee, R Jana

Index: Ranu, Brindaban C.; Banerjee, Subhash; Jana, Ranjan Tetrahedron, 2007 , vol. 63, # 3 p. 776 - 782

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Citation Number: 115

Abstract

A basic ionic liquid, 1-methyl-3-butylimidazolium hydroxide,[bmIm] OH, catalyzes the Michael addition of active methylene compounds to conjugated ketones, carboxylic esters and nitriles. It further catalyzes the addition of thiols to α, β-acetylenic ketones and alkylation of 1, 3-dicarbonyl and-dicyano compounds. The Michael addition to α, β-unsaturated ketones proceeds in the usual way, giving the monoaddition products, whereas addition to ...