反应详情

温度

60 °C

A mixture of 107A (2.44 g, 8.9 mmol) and lithium hydroxide monohydrate (750 mg, 17.9 mmol) in THF-H2O-MeOH (15:7:7, 29 mL) was stirred at 60° C. for 2.0 hr. After cooling to room temperature, the reaction mixture was diluted with water (30 mL) and concentrated in vacuo to remove most organic solvents. The mixture was washed with 1:1 mixture of ethyl acetate-ether and the aqueous layer was acidified with 2.0 N HCl to pH 5.0. The precipitate was collected by filtration, rinsed with water and dried under high vacuum to give 107B as a crystalline solid (1.64 g, 71%).

1. temperatureAfter cooling to room temperature
2. concentrationconcentrated in vacuo
3. customto remove most organic solvents
4. washThe mixture was washed with 1:1 mixture of ethyl acetate-ether
5. filtrationThe precipitate was collected by filtration
6. washrinsed with water
7. customdried under high vacuum