Patent ID: 9624311
Date: 2017-04-18
CPC Classifications: C08B,C08J,C08L

Claim:
1. A method of preparing a regioselectively substituted ester comprising: providing or synthesizing an ester from a selected carbohydrate or polysaccharide having a plurality of anhydroglucose repeating units; providing a solvent capable of dissolving the carbohydrate or polysaccharide; providing a tetraalkylammonium fluoride or hydroxide salt capable of selectively deacylating the ester in the solvent; and reacting the ester and the tetraalkylammonium fluoride or hydroxide salt in the solvent for a time and under conditions sufficient to obtain a desired ester product which has been regioselectively deacylated at the C-2 and C-3 positions of the anhydroglucose repeating units, substantially retaining its ester substituent at the C-6 position of the anhydroglucose repeating units.