Esterifications of alcohols with carboxylic acids in the room temperature i
onic liquid 1-butylpyridinium chloride-aluminium(III) chloride as green rea
ction medium in catalytic quantities have been investigated. Excellent conv
ersion and selectivities were achieved, and the most of resultant esters co
uld be easily recovered due to immiscibility with the ionic liquid. (C) 200
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