N-fluorination with cesium fluoroxysulfate

Cesium fluoroxysulfate was proved to be a N-fluorinating agent for some nitrogen compounds. Yields of products obtained mainly monofluoro-derivatives, depend on structures of initial nitrogen compounds. The ability of cesium fluoroxysulfate for N-fluorination is much inferior to that of elemental fluorine and fluoromethylhypofluoride (CF3OF) but superior to that of perchlorylfluoride (FClO3).