反应详情

tert-Butyl N-(2-oxoethyl)carbamate (1 g) was dissolved in dry methanol (40 ml) and treated with cyclopropane methylamine (0.709 ml) and 4A° molecular sieves (1 g) and the resultant mixture stirred at room temperature for 5 h. Sodium borohydride (0.38 g) was added and the reaction stirred for a further 18 h at room temperature. Sodium hydroxide (2N, 3 ml) was added, the mixture filtered and the filtrate concentrated under reduced pressure. The residue was partitioned between sodium hydroxide solution (2N) and ethyl acetate. The separated organic layer was dried (over magnesium sulphate), filtered and concentrated under reduced pressure to give the title compound (1 g) as a colourless oil

1. filtrationthe mixture filtered
2. concentrationthe filtrate concentrated under reduced pressure
3. customThe residue was partitioned between sodium hydroxide solution (2N) and ethyl acetate
4. dry with materialThe separated organic layer was dried (over magnesium sulphate)
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure