反应详情

Dissolve 0.69 g of the compound obtained in Step B in 10 ml of absolute ethanol and add 2.5 ml of sodium hydroxide solution (1M) and reflux for 16 hours. Cool and add 20 ml of water and acidify the reaction mixture with hydrochloric acid (5M). Filter off the precipitate and wash it with water. The title product is obtained in the form of a white solid.

1. temperaturereflux for 16 hours
2. temperatureCool
3. filtrationFilter off the precipitate
4. washwash it with water