反应详情

温度

100 °C

To a solution of Intermediate 44 (4.1 g, 16.01 mmol) in dimethyl sulfoxide (18 mL) was slowly added sodium cyanide (0.98 g, 20 mmol). The reaction mixture was stirred at 100° C. for 1.5 hours and at room temperature overnight. The crude was partitioned between ether and water and the organic layer was washed with water. The solvent was removed under reduced pressure and the title compound was obtained as a colourless solid (2.9 g, 98%) and used in the next step without further purification.

1. customThe crude was partitioned between ether and water
2. washthe organic layer was washed with water
3. customThe solvent was removed under reduced pressure