Author's Organization:Pharmaceutical Institute, School of Medicine, Keio University Pharmaceutical Institute, School of Medicine, Keio University Pharmaceutical Institute, School of Medicine, Keio University Pharmaceutical Institute, School of Medicine, Keio University
The reaction of 6-benzylidenehydrazino-1, 3-dimethyluracils with phosphorus oxychloride gave N4-benzylideneamino-6-chloro-1, 3-dimethylcytosines, which serve as useful substrates for several nucleophilic displacements.