The reaction of vinyl acetate with carboxylic acids in the presence of sulfuric acid catalyst gives a mixture of the acylals ethylidene diacetate, I-acetoxy-1-acyloxyethane, and 1, l- diacyloxyethane. By contrast, the homologous isopropenyl ace tate gives the ester-acid interchange reaction as well as anhydride formation previously reported. Attempts to isolate the geminal diester, bromoisopropylidene distearate via the reaction of isopropenyl ...