[F:1][C:2]1[CH:19]=[CH:18][C:5]([C:6]([CH:8]2[CH2:13][CH2:12][N:11]([CH:14]([CH3:17])[C:15]#[N:16])[CH2:10][CH2:9]2)=[O:7])=[CH:4][CH:3]=1.N.[H][H]>[Ni].CO>[NH2:16][CH2:15][CH:14]([N:11]1[CH2:12][CH2:13][CH:8]([C:6]([C:5]2[CH:4]=[CH:3][C:2]([F:1])=[CH:19][CH:18]=2)=[O:7])[CH2:9][CH2:10]1)[CH3:17]A mixture of 32 parts of 4-(4-fluorobenzoyl)-α-methyl-1-piperidineacetonitrile and 400 parts of methanol, saturated with ammonia is hydrogenated in the Parr-apparatus at 25° C. with 5 parts of Raney-nickel catalyst. After the calculated amount of hydrogen is taken up, the catalyst is filtered off and the filtrate is evaporated. The residue is taken up in methylbenzene and the latter is evaporated again. The residue is dissolved in 2,2'-oxybispropane and the solution is filtered till clear. The solvent is evaporated, yielding 32 parts (100%) of [1-(2-amino-1-methylethyl)-4-piperidinyl] (4-fluorophenyl)methanone as an oily residue.
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