反应详情

Triethylamine (4.6 mL, 33 mmol) and glycine methyl ester hydrochloride (3.8 g, 30.26 mmol) were successively added to a solution of p-anisaldehyde (2.0 g, 14.7 mmol) in dichloromethane (150 mL) at 0° C. Sodium sulfate (10 g) was added and the reaction mixture was stirred overnight at room temperature. The reaction mixture was then filtered and concentrated to dryness. The resulting residue was portioned in ethyl acetate and filtered in order to remove the triethylamine salts. The title compound was obtained as a pale yellow solid (4.43 g, 100%).

1. filtrationThe reaction mixture was then filtered
2. concentrationconcentrated to dryness
3. filtrationfiltered in order
4. customto remove the triethylamine salts