Abstract
Acylation of alcohols with acid anhydrides or acid halides could be considerably accelerated by adding 1-substituted imidazoles as catalysts. The acylation with acid halides required the addition of triethylamine to capture the resulting acid. 1-Isopropyl-5-methylimidazole and 1-(4-methoxybenzyl)-5-methylimidazole showed higher catalytic activities than 4-dimethylaminopyridine (DMAP) for acylation of primary and secondary alcohols.
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