The synthesis of chloroethylnitrososulfamide, (CENS), was carried out starting from chlorosulfonyl isocyanate, amines and haloalcohols through heterocyclization and decarboxylativereopening of N-sulfamoyl-2-oxazolidinones. A total regioselectivity concerning CO2 versus SO2 site hydrolysis was observed. A related aminolysis of sulfamoyloxazolidinones gave N-carbamoylsulfamides. The specific nitrosation
Synthesis of n-sulfamoyloxazolidinones and -perhydrooxazinones reactivity and use as donors in the transsulfamoylation reaction; application to the preparation of 2-chloroethylnitrososulfamides. IV
compounds in good yields. These sulfamoyloxazolidinones and sulfamoylperhydrooxazinones were revealed as efficient 2-chloroethylsulfamoyl donors in the 2-chloroethylnitrososulfamidessynthesis; five new CENS (derivated from heterocyclic amines and amino acids) were thus synthezised. According to the experimental conditions, N-sulfamoylcyclocarbamates can be reopened by nucleophiles giving addition