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Title: A simple and efficient procedure for the Knoevenagel condensation catalyzed by [MeHMTA]BF4 ionic liquid
Authors: Keithellakpam, Sanjoy
Moirangthem, Nimalini
Laitonjam, Warjeet S
Keywords: Active methylene compounds;Carbonyl compounds;Hexamethylenetetramine-base;Ionic liquids;Knoevenagel conden-sation;Recyclable
Issue Date: Sep-2015
Publisher: NISCAIR-CSIR, India
Abstract: Hexamethylenetetramine-based ionic liquid, 1-methylhexamethyl-enetetraminium tetrafluoroborate, has been used as a catalyst for a simple and efficient method for Knoevenagel condensation of active methylene compounds and various carbonyl compounds affording products of very high yields within short duration. This method is very simple, clean and avoids hazardous organic solvents. Most of the products require no further purification. In this process, after stirring for a few minutes, the product is isolated in pure form for both solid and liquid products. The catalyst is easily recovered and can be recycled.
Page(s): 1157-1161
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections: IJC-B Vol.54B(09) [September 2015]

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