反应详情

(R)-2-(4-Nitro-1H-imidazol-1-yl)-octanoic acid (16.0 g, 63.0 mmol) was dissolved in 1 L of anhydrous methanol. To this solution was added pTsOH (300 mg). The reaction was then heated to reflux for 16 hours. Upon cooling, the solvent was removed in vacuo, to give an oil that was dissoved in 300 mL of ethyl acetate. The solution was washed (2×250 mL) with saturated NaHCO3 solution. The organic was then dried (Na2SO4) and concentrated in vacuo to provide 13.2g (78%) of (R)-methyl-2-(4-nitro-1H-imidazol-1-yl)-octanoate as an amber oil. Calculated for C12H19N3O4 : C, 53.32; H, 7.11; N, 15.60. Found: C, 53.23; H, 7.05; N, 15.39.

1. temperatureThe reaction was then heated
2. temperatureto reflux for 16 hours
3. temperatureUpon cooling
4. customthe solvent was removed in vacuo
5. customto give an oil that
6. washThe solution was washed (2×250 mL) with saturated NaHCO3 solution
7. dry with materialThe organic was then dried (Na2SO4)
8. concentrationconcentrated in vacuo