反应详情

(2R)-Aminobutan-1-ol (1.01 g, 11.3 mmol) was dissolved in anhydrous acetonitrile (50 mL) and the solution was cooled using an ice bath. To the solution, fuming nitric acid (0.5 mL) was added. A mixture of acetic anhydride (8.3 mL, 90 mmol) and fuming nitric acid (2.3 mL, 57 mmol) were cooled in an ice bath and then added slowly to the aminobutan-1-ol reaction mixture and stirred for 1 hour. Solvent was removed under reduced pressure and the residue obtained was dried overnight under high vacuum to yield the title compound (2.07 g, 10.5 mmol, 93% yield) as a light green solid. 1H NMR (300 MHz, CDCl3) δ 8.22 (s, 2H), 4.75 (dd, J=11.9 and 2.7 Hz, 1H), 4.60-4.53 (m, 1H), 3.46 (s, 1H), 1.61 (m, 2H), 0.92 (t, J=7.4 Hz, 3H). 13C NMR (CDCl3, 75.45 MHz) δ 72.1, 49.7, 22.5, 9.5. LRMS (APIMS) m/z 135 (M−HNO3+H)+.

1. temperaturethe solution was cooled
2. additionwas added
3. temperaturewere cooled in an ice bath
4. customSolvent was removed under reduced pressure
5. customthe residue obtained
6. customwas dried overnight under high vacuum