Synthesis of cyclic azomethine imines from aza .beta.-lactams. Conversion of 3-oxo-1,2-diazetidinium tosylates into 1-substituted 3-oxo-1,2-diazetidinium inner salts
Synthesis of cyclic azomethine imines from aza .beta.-lactams. Conversion of 3-oxo-1,2-diazetidinium tosylates into 1-substituted 3-oxo-1,2-diazetidinium inner salts