反应详情

5.7 g (30.8 mmol) of ethyl 6-aza-1-oxaspiro[2,5]octane-6-carboxylate are added dropwise to 30 ml of ethylamine solution (50% in water) and the mixture is stirred overnight at room temperature. It is then concentrated and distilled.

1. concentrationIt is then concentrated
2. distillationdistilled