Intramolecular electrophilic additions to olefins in organic syntheses. Stereoselective synthesis of 3,4-substituted .beta.-lactams by bromine-induced oxidative cyclization of O-acyl .beta.,.gamma.-unsaturated hydroxamic acid derivatives
Intramolecular electrophilic additions to olefins in organic syntheses. Stereoselective synthesis of 3,4-substituted .beta.-lactams by bromine-induced oxidative cyclization of O-acyl .beta.,.gamma.-unsaturated hydroxamic acid derivatives