反应详情

温度

-78 °C

To a cooled solution of bis(2-methoxyethyl)amine (1.94 g, 14.5 mmol, Aldrich) and pyridine (1.26 g, 1.29 mL, 15.9 mmol) in methylene chloride (18 mL) at −78° C., was added slowly 1-chloroethyl carbonochloridate (1.98 g, 1.5 mL, 13.8 mmol, Aldrich) over ˜15 min. The reaction mixture was allowed to stir at −78° C. for 3 h, giving a white precipitate. This cold reaction mixture was filtered to remove the solid and the filtrate was concentrated to dryness, giving the crude 1-chloroethyl bis(2-methoxyethyl)carbamate used for the next step without further purification.

1. customgiving a white precipitate
2. customThis cold reaction mixture
3. filtrationwas filtered
4. customto remove the solid
5. concentrationthe filtrate was concentrated to dryness