regioselective ring-opening reaction of epoxides with various carboxylicacids under metal-free conditions is reported. The ring-opening of epoxides takes place in the presence of graphite oxide as an efficient and available catalyst to produce the corresponding 2-hydroxy monoester and 1,2-diester derivatives in good yields. Regioselective attack of the nucleophile, short reaction times, metal-free conditions
Lipases from porcine pancreas (PPL) and Candida cylindracea (CCL) in different organicsolvents allow discrimination of the primary and secondary hydroxyl groups, and also between two primary hydroxyl groups towards acylation with 2,2,2-trifluoroethyl butyrate in diols and triols with high regioselectivity.