Acetamidomalonic acid diethyl ester → Diethyl acetamido[5-(4-nitrophenyl)furfuryl]malonate

Beteiligte Stoffe

Reaktionsschritte

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°.

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