反应详情

To 300 ml of absolute ethanol was added in portions 2.4 g (0.104 mole) of sodium followed by 21.7 g (0.10 mole) of diethyl acetamidomalonate and stirring was continued for 10 minutes. 5-(4-Nitrophenyl)furfuryl chloride (23.7 g, 0.10 mole) was then added in portions, and the mixture was heated under reflux for 5 hrs. The mixture was filtered hot to remove the insoluble sodium chloride. The filtrate was cooled in a refrigerator, and the solid which was deposited was collected by filtration and washed with ether. The solid was stirred in water, collected by filtration, and dried in an oven at 100° for 2 hrs. to give 21 g (50%) of diethyl acetamido[5-(4-nitrophenyl)furfuryl]malonate. Recrystallization from SDA-32 gave an analytical sample, m.p. 183°-185°.

1. temperaturethe mixture was heated
2. temperatureunder reflux for 5 hrs
3. filtrationThe mixture was filtered hot
4. customto remove the insoluble sodium chloride
5. temperatureThe filtrate was cooled in a refrigerator
6. filtrationthe solid which was deposited was collected by filtration
7. washwashed with ether
8. stirringThe solid was stirred in water
9. filtrationcollected by filtration
10. customdried in an oven at 100° for 2 hrs