Patent ID: 8324393

Claim:
A process for preparing a 2,2-difluoroethylamine compound, comprising hydrogenating a 2,2-difluoroethylimine compound of formula (IV) to a corresponding 2,2-difluoroethylamine compound of formula (III): where the A radical is defined as follows: pyrid-2-yl or pyrid-4-yl, or pyrid-3-yl which is optionally 6-substituted by fluorine, chlorine, bromine, methyl, trifluoromethyl or trifluoromethoxy, or pyridazin-3-yl which is optionally 6-substituted by chlorine or methyl, or pyrazin-3-yl, or 2-chloropyrazin-5-yl, or 1,3-thiazol-5-yl which is optionally 2-substituted by chlorine or methyl, or pyrimidinyl, pyrazolyl, thiophenyl, oxazolyl, isoxazolyl, 1,2,4-oxadiazolyl, isothiazolyl, 1,2,4-triazolyl or 1,2,5-thiadiazolyl, which is optionally substituted by fluorine, chlorine, bromine, cyano, nitro, C 1 -C 4 -alkyl (which is optionally substituted by fluorine and/or chlorine), C 1 -C 3 -alkylthio (which is optionally substituted by fluorine and/or chlorine), or C 1 -C 3 -alkylsulphonyl (which is optionally substituted by fluorine and/or chlorine), or in which X is halogen, alkyl or haloalkyl and Y is halogen, alkyl, haloalkyl, haloalkoxy, azido or cyano.