S. Tangestaninejad et al., Conversion of epoxides into 1,3-dioxolanes catalysed by high oxidation state metalloporphyrins, J CHEM R-S, (9), 2001, pp. 365-367
Tm(IV) tetra phenyl porphyrin perchlorate, Sn(IV)(tpp)(ClO4)(2), catalyses
the efficient reaction of epoxides with acetone to give the corresponding 1
,3-dioxolanes in good yields.