反应详情

温度

85 °C

To a solution of 1-phenethylamino-3-phenyl-hex-5-en-3-ol (120 mg, 0.41 mmol) and Et3N (0.5 mL) in anhydrous CH2Cl2 (5 mL) was added triphosgene (40 mg, 0.134 mmol) in portions at 0° C. under N2. Then the solution was refluxing at 80-90° C. overnight. The solvent was removed under reduced pressure, and the residue was purified by preparative TLC to afford 6-allyl-3-phenethyl-6-phenyl-[1,3]oxazinan-2-one (234 mg, yield: 19%). 1H NMR (CDCl3): 2.07-2.17 (m, 2H), 2.44-2.60 (m, 2H), 2.62-2.84 (m, 4H), 3.25 (m, 1H), 3.52 (m, 1H), 3.09 (m, 1H), 5.04 (m, 2H), 5.47-5.58 (m, 1H), 6.94 (m, 2H), 7.10 (m, 3H), 7.27 (m, 3H), 7.31 (m, 2H).

1. customThe solvent was removed under reduced pressure
2. customthe residue was purified by preparative TLC