[Cl:1][C:2]1[C:3]([CH2:12][C:13]#[N:14])=[N:4][CH:5]=[C:6]([C:8]([F:11])([F:10])[F:9])[CH:7]=1.[C:15]([OH:18])(=[O:17])[CH3:16]>[Pd]>[C:15]([OH:18])(=[O:17])[CH3:16].[Cl:1][C:2]1[C:3]([CH2:12][CH2:13][NH2:14])=[N:4][CH:5]=[C:6]([C:8]([F:11])([F:9])[F:10])[CH:7]=1113 g of [3-chloro-5-(trifluoromethyl)-2-pyridinyl]acetonitrile (0.51 mol, 1 eq.) are diluted in 2.5 L of acetic acid. 30 g of palladium (5% on charcoal) are added. The reaction medium is stirred at ambient temperature under a hydrogen pressure of 5 bar. The progress of the reaction is followed by TLC; when the [3-chloro-5-(trifluoromethyl)-2-pyridinyl]acetonitrile has been completely used up, the medium is filtered over a bed of celite, and then concentrated to dryness so as to produce the 2-[3-chloro-5-(trifluoromethyl)-2-pyridinyl]ethanamine acetate.
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