Synthesis of 4-trifluoromethylazetidin-2-ones by a novel 2+2 photocycloaddition of 3-trifluoromethyl-quinoxalin-2-one or -1,4-benzoxazin-2-one to ketene.
Synthesis of 4-trifluoromethylazetidin-2-ones by a novel 2+2 photocycloaddition of 3-trifluoromethyl-quinoxalin-2-one or -1,4-benzoxazin-2-one to ketene.