反应详情

(S)-2-(bromomethyl)-4,4-difluoro-1-(4-nitro-3-(trifluoromethyl)phenyl)pyrrolidine (230 mg, 0.59 mmol) was dissolved in ethyl acetate (5 mL) and TEA (90 mg, 124 μL, 0.89 mmol) and the flask was flushed with nitrogen. 10% Pd/C (58 mg, 0.05 mmol) catalyst was added and the reaction mixture was stirred overnight under an atmosphere of hydrogen. The reaction mixture was filtered, treated with 50% saturated NaHCO3, and extracted with ethyl acetate. The organic layer was dried over Na2SO4, filtered and concentrated to provide (R)-4-(4,4-difluoro-2-methylpyrrolidin-1-yl)-2-(trifluoromethyl)aniline as a purple oil (164 mg, 99% yield). 1H NMR (400 MHz, DMSO-d6) δ 6.81 (s, 2H), 6.58 (s, 1H), 4.92 (s, 2H), 4.07-4.01 (m, 1H), 3.74-3.63 (m, 1H), 3.60-3.50 (m, 1H), 2.75-2.60 (m, 1H), 2.22-2.11 (m, 1H), 1.10 (d, J=6.2 Hz, 3H).

1. filtrationThe reaction mixture was filtered
2. additiontreated with 50% saturated NaHCO3
3. extractionextracted with ethyl acetate
4. dry with materialThe organic layer was dried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated