反应详情

300 ml of a 10% aqueous hydrochloric acid solution was added to 36.0 g of 3-carboethoxy-1-ethylpiperidine-2,4-dione, and they were refluxed for 40 minutes and allowed to cool. The resulting mixture was subjected to extraction by chloroform. The resulting chloroform layer was water-washed, dried and concentrated to obtain 16.6 g of 1-ethylpiperidine-2,4-dione as a light yellow oily matter with an yield of 70%.

1. temperaturewere refluxed for 40 minutes
2. temperatureto cool
3. extractionThe resulting mixture was subjected to extraction by chloroform
4. washwashed
5. customdried
6. concentrationconcentrated