SEARCH Articles Figures Tables 0-benzylidene acetals regioselective openings 1,2,4-triol, regioselective acetalization Acetal derivatives regioselectivity Benzylidene acetals, regioselective cleavage Dialkylstannylene acetals regioselectivity Dibutylstannylene acetals regioselectivity Regioselective 4- benzyl acetate Regioselective hydroformylation vinyl acetate Regioselectivity 1,2,4-triol acetalization