Hexafluoropropene trimers (HFPT) react with primary amines to form the
corresponding enamines and enimines, i.e. products arising from the i
ndirect substitution of fluorine atoms. The adduct with HFPT has been
obtained for the first time in the reaction with ammonia. The intramol
ecular cyclization of the compounds synthesized to give azetines and a
zetidines has been studied. Specific features of the F-19 NMR spectra
of the enimines obtained have been considered.