Patent ID: 8937192
Filing Date: 2015-01-20
Classification: C07D,Y02P

Abstract:
1. A method of preparing cyclic esters from 5 or 6 carbon compounds comprising, contacting a column bed containing a solid acid catalyst with at least one starting 5 or 6 carbon compound sugar alcohol selected from the group consisting of arabinitol, ribitol, sorbitol, mannitol, isomannide, galactitol, iditol and xylitol and with an organic acid in a single step reaction under a single set of reaction conditions at a temperature of 70° C. to 100° C. for a time sufficient to form a product mixture comprising at least one of a cyclic monoester and cyclic diester of the organic acid and a monoanhydro- or dianhydro-alcohol of the sugar alcohol, and eluting the product mixture from the column bed.