Реакция #336807

Уравнение реакции

2-amino-1,3-propandiol

KOH

acrylonitrile

→

3-[2-Amino-3-(2-cyanoethoxy)propoxy]-propionitrile

Растворители

1,4-dioxane

Условия реакции

Обработка

1. 1
   ТемператураThe reaction was then warmed to room temperature
2. 2
   workup.STIRRINGstirred overnight
3. 3
   Концентрированиеconcentrated under reduced pressure
4. 4
   workup.ADDITIONThe residue was diluted with CH2Cl2 (120 mL)
5. 5
   Промывкаwashed with saturated aqueous NaHCO3 (2×70 mL) and H2O (2×70 mL)
6. 6
   СушкаThe organic phase was dried over anhydrous MgSO4
7. 7
   Другоеthe solvent was removed under reduced pressure
8. 8
   ДругоеThe resulting residue was purified by flash column chromatography (on silica gel, MeOH

Методика

To a suspension of 2-amino-1,3-propandiol (3.0 g, 0.033 mol) in 1,4-dioxane (8 mL) was added aqueous 40% KOH (0.46 mL, 0.003 mol), and the mixture was stirred for 10 minutes. The reaction solution was cooled to 0° C., and acrylonitrile (5.20 mL, 0.079 mol) was added with a syringe. The reaction was then warmed to room temperature, stirred overnight, and concentrated under reduced pressure. The residue was diluted with CH2Cl2 (120 mL) and washed with saturated aqueous NaHCO3 (2×70 mL) and H2O (2×70 mL). The organic phase was dried over anhydrous MgSO4, and the solvent was removed under reduced pressure. The resulting residue was purified by flash column chromatography (on silica gel, MeOH:CH2Cl2=1:10 affording 1.62 g (34%) of the desired dinitrile (27) as a slightly yellow liquid. 1H NMR (CDCl3): δ 3.68 (t, J=6.4 Hz, 4H, CH2O), 3.48 (m, 4H, CH2O), 3.15 (m, 1H, CH), 2.61 (t, J=6.4 Hz, 1H, CH2CN).

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