反应详情

Ethyl 3,3-diethoxy-2-nitropropanoate (2.45 g, 10.42 mmol) was dissolved in Ethanol (70 mL, 1240 mmol). Nitrogen gas was bubbled through the mixture for 5 minutes. Raney® nickel was added to the mixture. Reaction vessel was placed on a Parr apparatus and charged with 13 psi of hydrogen gas. Reaction shook at room temperature for 1 hour. Mixture was removed from the apparatus and filtered over celite. Filter cake was washed with 150 mL ethanol followed by 250 mL hot ethanol. Filtrate was concentrated to dryness. Title compound was obtained as red oil in 92% yield. 1H NMR (300 MHz, CHLOROFORM-D) δ ppm 4.59 (d, J=4.39 Hz, 1 H) 4.05-4.30 (m, 2 H) 3.65-3.81 (m, 2 H) 3.38-3.63 (m, 3 H) 1.87 (s, 2 H) 1.20-1.29 (m, 3 H) 1.12-1.20 (m, 6 H).

1. customNitrogen gas was bubbled through the mixture for 5 minutes
2. additionRaney® nickel was added to the mixture
3. customReaction vessel
4. customReaction
5. customMixture was removed from the apparatus
6. filtrationfiltered over celite
7. filtrationFilter cake
8. washwas washed with 150 mL ethanol
9. concentrationFiltrate was concentrated to dryness