Reaction of mesoionic compounds deriving from cyclic N-acyl-α-aminoacids with N-(phenylmethylene)benzenesulfonamide
作者:Piero Dalla Croce、Raffaella Ferraccioli、Concetta La Rosa
DOI:10.1016/s0040-4020(98)01026-6
日期:1999.1
the behaviour of bicyclic mesoionic compounds derived from the cyclodehydration of cyclic N-acyl-α-aminoacids 1–4 with N-(phenylmethylene)benzenesulfonamide 5. The reaction affords spirocyclic β-lactams and/or imidazo-condensed products (the 1,3-dipolar cycloaddition adducts) depending on the experimental conditions and on the nature of the substituent R on the mesoionicring.