Formation of three-membered rings from γ-lodoketones and γ-lodoesters via 1,3-elimination
Abstract
γ-Iodoketones, prepared by ene–halogenocyclization of α-haloketones with Pd(PPh3)4, on treatment with diazabicyclo[5.4.0]undec-7-ene afford three-membered ring compounds in good yield via syn-1,3-elimination, presumably via W-shaped transition states.