反应详情

温度

0 °C

A solution of 4-aminobutyraldehyde diethyl acetal (48.5 g, 0.3 mol) in tetrahydrofuran (60 ml) was added dropwise to a stirred slurry of N-(ethoxycarbonyl) phthalimide (65.93 g, 0.3 mol) in tetrahydrofuran (250 ml) at 0° C. After stirring at 0° C. for 0.16 h and at room temperature for 18 h the solvent was removed in vacuo and the residue distilled at 1 mmHg to remove the ethyl carbamate by-product. The residual brown oil was allowed to cool to afford the title compound (91 g, 93%).

1. customwas removed in vacuo
2. distillationthe residue distilled at 1 mmHg
3. customto remove the ethyl carbamate by-product
4. temperatureto cool