Patent ID: 6969768

Claim:
A process for preparing a 4-haloalkylnicotinic ester of the formula (I), where R F is (C 1 -C 4 )-haloalkyl and R is (C 1-C 6 )-alkyl; which comprises a) reacting an aminoketone of the formula (II), R F â€”C(O)â€”CHâ•CHâ€”NH 2 (II) in a condensation reaction under reduced pressure in the range from 5 to 150 mbar with a compound of the formulae (III) to (V), (R 1 Z)CHâ•CHâ€”COORâ€ƒâ€ƒ(III), (R 1 Z) 2 CHâ€”CH 2 â€”COORâ€ƒâ€ƒ(IV), HCâ‰¡Câ€”COORâ€ƒâ€ƒ(V), where R 1 is (C 1 -C 6 )-alkyl and Z is O, S, NR 1 or C(O)O, to give a compound of the formulae (VI) and/or (VII), R F â€”(O)â€”CHâ•CHâ€”NHâ€”CHâ•CHâ€”COORâ€ƒâ€ƒ(VI) R F â€”C(O)â€”CHâ•CHâ€”NHâ€”CH(ZR 1 )â€”CH 2 â€”COORâ€ƒâ€ƒ(VII) b) and subjecting the reaction product to a ring closure reaction.