(S)-2-methyl-1-(4-nitro-3-(trifluoromethyl)phenyl)pyrrolidine → (S)-4-(2-methylpyrrolidin-1-yl)-2-(trifluoromethyl)aniline

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Reaction Steps

A flask charged with (S)-2-methyl-1-(4-nitro-3-(trifluoromethyl)phenyl)pyrrolidine (2.45 g, 8.9 mmol) and palladium on carbon (245 mg, 10 wt %) was flushed with N2 followed by evacuating under vacuum. Methanol (15 mL) was added under inert atmosphere followed by evacuating under vacuum. The reaction mixture was stirred overnight under an atmosphere of H2. The palladium catalyst was removed by filtration and solvent was removed under reduced pressure to give (S)-4-(2-methylpyrrolidin-1-yl)-2-(trifluoromethyl)aniline in quantitative yield. 1H NMR (400 MHz, DMSO-d6) δ 6.78 (d, J=8.8 Hz, 1H), 6.70-6.67 (m, 1H), 6.47 (d, J=2.7 Hz, 1H), 4.68 (s, 2H), 3.76-3.69 (m, 1H), 3.32-3.27 (m, 1H), 3.02-2.96 (m, 1H), 2.05-1.94 (m, 2H), 1.93-1.84 (m, 1H), 1.64-1.58 (m, 1H), 1.05 (d, J=6.1 Hz, 3H). LC/MS: m/z 245.1 (M+H)+ at 0.48 min (10%-99% CH3CN (0.035% TFA)/H2O (0.05% TFA)).

Provenance & Evidence