Hydrochloric Acid → (S)-Methyl 3-amino-3-(4-chlorophenyl)propanoate

Participants

Reaction Conditions

Reaction Steps

Hydrochloric acid (4.0M in 1,4 Dioxane) (4.18 mL, 16.73 mmol) was added in one portion to (S)-methyl 3-(tert-butoxycarbonylamino)-3-(4-chlorophenyl)propanoate (Intermediate 19) (1.05 g, 3.35 mmol) in DCM (20 mL) at 20° C. The resulting solution was stirred at 20° C. for 5 hours. The reaction mixture was evaporated to give (S)-methyl 3-amino-3-(4-chlorophenyl)propanoate (hydrochloride) (0.850 g, 102%) as a white solid. 1H NMR (399.9 MHz, DMSO-d6) δ 2.98-3.04 (1H, m), 3.16-3.21 (1H, m), 3.58 (3H, s), 4.62-4.66 (1H, m), 7.50-7.52 (2H, m), 7.57-7.59 (2H, m), 8.66 (3H, s). m/z (ESI+) (M+H)+=214; HPLC tR=1.71 min.

Provenance & Evidence