HY Zeolite is found to be a versatile catalyst for opening of epoxides to the corresponding acetylated 1,2-Diols with acetic anhydride in good yields. ... HY Zeolite is found to be a versatile catalyst for opening of epoxides to the corresponding acetylated 1,2-Diols with acetic anhydride in good yields. ... The opening of epoxides to the corresponding alcohols is one of the most useful reactions in organic synthesis[1]1. Carey , FA and Soundberg , RJ 1997. Advanced Organic ...