SEARCH Articles Figures Tables 2-Cyclohexenone Allene reaction Allenes photocycloaddition Allenes photocycloaddition reactions Allenes reactions Cyclohexenone, 3,4-dimethyladdition to allene Cyclohexenones Cyclohexenones photocycloaddition reactions Cyclohexenones, photocycloaddition Cyclohexenones, photocycloadditions Photocycloaddition reactions Photocycloadditions