Dehydration6 of trifluoroacetamide followed by addition of ammonia'to the resulting trifluoroacetonitrile gave trifluoroacetamidine. 8 Oxidative cyclization of trifluoroacetamidine by the method of Graham9 (hypochlorite and chloride ion in aqueous dimethyl sulfoxide) gave diazirine 6 in 45% overall yield from trifluoroacetamide (Chart I). Chlorotrifluoromethyl- 1-diazirinelo is a gas (bp-19 to-1 8') with the following spectroscopic features:” ir 1590, ...
