反应详情

400 mg (1.43 mmol) methyl 4-(morpholin-3-on-4-yl)-3-nitro-benzoate are dissolved in 15 ml of methanol and combined with 4.5 ml (4.5 mmol) 1-molar lithium hydroxide solution. The mixture is stirred for 2 hours at ambient temperature. Then it is evaporated down i. vac., the residue is diluted with water, cooled in the ice bath and acidified with 2-molar hydrochloric acid. After 10 minutes cooling in the ice bath the precipitate formed is filtered off, washed with water until neutral and dried at 50° C. in the drying cupboard.

1. customThen it is evaporated down i
2. addition, the residue is diluted with water
3. temperaturecooled in the ice bath
4. temperatureAfter 10 minutes cooling in the ice bath the precipitate
5. customformed
6. filtrationis filtered off
7. washwashed with water until neutral and
8. customdried at 50° C. in the drying cupboard