反应详情

To a solution of 1-(4,4-Dimethoxy-butyl)-3-hydroxy-imidazolidin-2-one (0.753 g, 3.45 mmol) in THF (3 mL) was added 1.0 N HCl (18 mL) and the mixture was stirred at room temperature overnight. The mixture was saturated with solid Na2CO3 (˜2 g) and extracted with CH2Cl2 (5×10 mL). The combined organic extracts were dried (Na2SO4) and concentrated and provided 0.30 g (51%) of 4-(3-Hydroxy-2-oxo-imidazolidin-1-yl)-butyraldehyde as a yellow oil. 1H NMR (CDCl3) δ 1.83-1.91 (m, 2H), 2.53 (t, 2H, J=6.9 Hz), 3.25 (t, 2H, J=6.9 Hz), 3.30 (t, 2H, J=6.9 Hz), 3.48 (t, 2H, J=6.9 Hz), 7.75 (br s, 1H), 9.70 (s, 1H).

1. extractionextracted with CH2Cl2 (5×10 mL)
2. dry with materialThe combined organic extracts were dried (Na2SO4)
3. concentrationconcentrated