反应详情

温度

120 °C

To a mixture of 8,8-dichloro-1-phenyl-1,2,9,10-tetrahydro[1,4]oxazino[2,3,4-jk]carbazol-7(8H)-one (0.4072 g, 1.09 mmol) in DMF (5 mL) is added lithium carbonate (0.242 g, 3.27 mmol) and lithium chloride (0.143 g, 3.39 mmol). The mixture is heated under an argon atmosphere at 120° C. for 1 h and then partitioned between water and CH2Cl2. The organic layer is washed twice with water (20 mL), dried over magnesium sulfate and concentrated. Column chromatography (50 g silica gel) using ethyl acetate/hexane (20/80) as eluent gave 0.2876 g (78%) of 8-chloro-1-phenyl-1,2-dihydro[1,4]oxazino[2,3,4-jk]carbazol-7-ol.

1. custompartitioned between water and CH2Cl2
2. washThe organic layer is washed twice with water (20 mL)
3. dry with materialdried over magnesium sulfate
4. concentrationconcentrated