反应详情

8 g (46.7 mmol) of ethyl 5-aza-1-oxaspiro[2,4]heptane-5-carboxylate are added dropwise to 50 ml of ethylamine solution (50% in water) and the mixture is stirred overnight at room temperature. It is concentrated and the residue is distilled.

1. concentrationIt is concentrated
2. distillationthe residue is distilled