反应详情

The title compound of example 21.1 (21.6 g, 63.8 mmol) was dissolved in a solution of NaOH (5.36 g, 134 mmol) in water (134 mL). When a clear solution was observed, ethanol (40 mL) was added followed by iodomethane (6.37 mL, 102 mmol). The reaction mixture was stirred overnight at room temperature. The reaction mixture was then extracted four times with chloroform and the combined organic layer was dried over sodium sulfate and concentrated to give the title product (22.0 g, 98%).

1. extractionThe reaction mixture was then extracted four times with chloroform
2. dry with materialthe combined organic layer was dried over sodium sulfate
3. concentrationconcentrated