SEARCH Articles Figures Tables A, p-Unsaturated butyrolactones A-Acetyl--y-butyrolactone A-Acetyl-7-butyrolactone A-Alkylidene y-butyrolactones A-Benzylidene-y-butyrolactone A-Bromo-y-butyrolactone A-Methyl-Y-butyrolactone A-Methylene butyrolactone A-Methylene-y-butyrolactones A-amino-y-butyrolactone A-methyl-y-butyrolacton A-methylene-y-butyrolactone Butyrolactone Butyrolactone, a-methylenesynthesis Butyrolactone, a-methylenesynthesis carbonylation of homoallylic alcohols Butyrolactones