Epoxidation of α,β-Unsaturated Carboxylic Acids with Hydrogen Peroxide by Heteropoly Acids

Abstract

Abstract The epoxidation of α,β-unsaturated carboxylic acids with 35%-H2O2 was carried out by the use of heteropoly acids (HPA) as catalyst. Among the HPA examined, CWP, prepared from 12-tungstophospholic acid (WPA) and cetylpyridinium chloride (CPC), was found to be the most efficient catalyst. The CWP-H2O2system provides an alternative method to prepare epoxy acids.