01852nas a2200229   4500008004100000022001400041245011300055210006900168260007300237300001200310490000800322520097300330653002001303653002901323653001901352653002501371100003201396700001801428700002501446700002901471856012201500       2014                        eng d  a0926-860X00aFacile esterification of carboxylic acid using amide functionalized benzimidazolium dicationic ionic liquids0 aFacile esterification of carboxylic acid using amide functionali  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUL  a214-2200 v4823 a<p>Herein, we report the synthesis of a new series of amide functionalized dicationic benzimidazolium based ionic liquids (DBimILs) and appraised their efficacy towards perceptive esterification of carboxylic acids with alkyl/allyl/aryl halides in presence of triethylamine. The amide groups present in this new series of DBimILs are expected to form hydrogen bonding with the carboxylic acids and this could facilitate the esterification reactions under mild conditions devoid of any added catalyst or organic solvent. The plausible mechanism for the enhanced catalytic activity in presence of this new series of ILs has been proposed. The corresponding alkyl/allyl/aryl esters isolated from this reaction were of high purity after simple extraction, which wipe out the necessity for further purification. This protocol addresses clean methodology and the efficient recyclability as well as reusability of the catalyst. (C) 2014 Elsevier B.V. All rights reserved.</p>10aBenzimidazolium10aDicationic ionic liquids10aEsterification10aHomogenous catalysis1 aMuskawar, Prashant, Narayan1 aThenmozhi, K.1 aGajbhiye, Jayant, M.1 aBhagat, Pundlik, Rambhau  uhttps://library.ncl.res.in/content/facile-esterification-carboxylic-acid-using-amide-functionalized-benzimidazolium-0