Verfahren zur Herstellung von fluorierten heterocyclischen Verbindungen

The invention comprises compounds of the formula wherein n is zero or an integer from 1 to 15, m is 2 or 3 and each of the X radicals which may be the same or different is a fluorine, chlorine or hydrogen atom, and a process for preparing said compounds in which a fluorinated amide of formula wherein m and n and X have the above meanings, is treated with a base. Preferably at least one equivalent of base per mole of fluorinated amide is used; the temperature is suitably from 0 DEG to 100 DEG C. Examples describe the production of 2-pentadecafluoroheptyl-2-oxazoline, 2-(pentadecafluoroheptyl) - 5,6 - dihydro - 1,3,4 - oxazine and 2-pentafluoroethyl-2-oxazoline.