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Full Paper A simple and efficient procedure for Knoevenagel condensation cata-lyzed by [C 4 dabco]OH ionic liquid

Sanjoy Keithellakpam, Warjeet Laitonjam
DABCO-based basic ionic liquid, 1-butyl-4-aza-1-azaniabicyclo [2.2.2]oc-tane hydroxide, has been used as a catalyst for a simple, convenient and rapid method for Knoevenagel condensation of active methylene compounds and various carbonyl compounds affording very high yields. The catalyst can be recycled for several times without much loss of activity.  2015