Process for producing fluoroalkoxyaminopyrimidines

A process for producing a fluoroalkoxyaminopyrimidine of the formula I ##STR12## wherein R is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or benzyl, X is halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -haloalkoxy, C.sub.1 -C.sub.4 -alkylamino or di-C.sub.1 -C.sub.4 -alkylamino, and T is hydrogen, chlorofluoromethyl, bromofluoromethyl, difluoromethyl or 1,2,2,2-tetrafluoroethyl, characterised in that a thiopyrimidine of the formula II ##STR13## wherein Y has the meaning given for X under the formula I or is hydroxyl, Q is C.sub.1 -C.sub.4 -alkyl, phenyl or benzyl, and A is hydrogen, sodium, potassium or an equivalent of calcium or magnesium, is reacted with difluoromethane, difluorobromomethane, tetrafluoroethylene, perfluoropropylene, trifluorobromoethylene or trifluorochloroethylene in the presence of an inorganic base;

• the resulting compound compound of the formula III ##STR14## wherein T and X have the meanings defined under the formula I and Q the meanings defined under the formula II, is converted by oxidation into a compound of the formula IV ##STR15## wherein T and X have the meanings defined under the formula I and Q the meanings defined under the formula II, and n is the number one or two;
• and this compound is treated with an amine of the formula V
• H--NH--R (V)
• wherein R has the meaning given under the formula I.