Water → (S)-1-(2-amino-4-(trifluoromethyl)phenyl)-N,N-dimethylpiperidin-3-amine

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A 500 mL parr pressure bottle was charged with palladium, 10 wt. % on activated carbon, 50% water wet (9.1 g, 8.6 mmol) under nitrogen. (S)—N,N-dimethyl-1-(2-nitro-4-(trifluoromethyl)phenyl)piperidin-3-amine (13.6 g, 43 mmol) was added as a solution in methanol via syringe, rinsing in with multiple methanol washes until the final volume was approximately 100 mL. The vessel was placed in a parr shaker, and treated with 2 atm H2 and shaken overnight. The reaction was flushed with nitrogen, and filtered through a pad of celite rinsing with 1.3 L of methanol and concentrated in vacuo. The oil was taken up in CH2Cl2, dried over Na2SO4, filtered, and concentrated in vacuo to give (S)-1-(2-amino-4-(trifluoromethyl)phenyl)-N,N-dimethylpiperidin-3-amine as a red oil. MS m/z=288 [M+H]+. Calc'd for C14H20F3N3: 287.

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