The sulfone group has proven exceedingly useful via its ability to stabilize an adjacent carbanion, but it generally fails to serve as a leaving group in nucleophilic displa~ ements. l- ~ If, by choosing the appropriate metal reagent, it could become possible to restructure the reactivity profile of the allyl sulfone from a nucleophile to an electrophile, the allyl sulfone would become the functional equivalent of either a 1, 3-dipole (1) or a 1, l-dipole (2). In ...
