Hydrochloric Acid → HCID 89921997, compound

Participants

Reaction Conditions

Reaction Steps

Sodium hydride (0.97 g, 24 mmol) was suspended in DMF (15 mL) under nitrogen at 0° C. A solution of (2S,4S)-1-(tert-butoxycarbonyl)-4-hydroxypyrrolidine-2-carboxylic acid (2.0 g, 8.7 mmol) in DMF (20 mL) was added dropwise. The reaction mixture was stirred at 0° C. for 10 min and treated with a solution of methyl 4-(bromomethyl)benzoate (2.3 g, 10 mmol) in DMF (5 mL). The reaction mixture was stirred at 0° C. for 1 h, and mixed with ethyl acetate and 1N HCl solution. The EtOAc layer was separated, washed with brine, and dried over MgSO4. The filtrate was concentrated in vacuo and the residue was purified by flash chromatography (eluting with 20% EtOAc/DCM) to afford the title compound as a white solid (1.2 g, 37%). 1H NMR (CDCl3) δ 7.99 (d, J=8.1 Hz, 2H), 7.36 (d, J=3.5 Hz, 2H), 4.78-4.26 (m, 3H), 4.19-4.11 (m, 1H), 3.90 (s, 3H), 3.71-3.46 (m, 2H), 2.84-2.39 (m, 1H), 2.23-2.04 (m, 1H), 1.48 (br. s., 9H); MS(ESI+) m/z 324.0 (M-55)+.

Provenance & Evidence