Ammonium Chloride → HCID 57634205, compound

Participants

Reaction Conditions

Reaction Steps

Ether (100 mL) was added to a 500 mL round-bottom flask containing (S)-2-(dibenzylamino)-3-(4-(trifluoromethyl)phenyl)propanal (4.51 g, 11.3 mmol). The mixture was cooled to −78° C., and methylmagnesium bromide (3.16 M in ether, 35.9 mL, 113 mmol) was added dropwise over 15 minutes. After 5 hours, ammonium chloride (50 mL) was added dropwise, and the mixture was warmed to room temperature. The mixture was extracted with EtOAc (2×500 mL), washed with brine (250 mL), dried over sodium sulfate, and purified by chromatography through a 300 g column eluting with a gradient of 0% to 70% EtOAc in hexane, to provide (2R,3S)-3-(dibenzylamino)-4-(4-(trifluoromethyl)phenyl)butan-2-ol (3.09 g, 65.9% yield) as a yellow oil. LCMS (ES+) m/z=414.3 (M+H). 1H NMR (400 MHz, CDCl3) δ ppm 1.23-1.28 (m, 3H) 2.84-2.94 (m, 2H) 3.08 (dd, J=12.81, 6.36 Hz, 1H) 3.66-3.76 (m, 4H) 4.03 (dt, J=10.66, 6.41 Hz, 1H) 7.15-7.28 (m, 12H) 7.51 (d, J=8.02 Hz, 2H).

Provenance & Evidence