反应详情

To a solution of 0.7 g of racemic trans-2-[4-(2-fluoro-2-phenyl-ethoxy)-cyclohexyl]-isoindole-1,3-dione in 15 mL of THF and 15 mL of ethanol was added 0.3 mL of hydrazine hydrate and the mixture heated to reflux for 4 h, then 5 mL of 6N HCl was added and the reflux was continued for 1 h. The cooled mixture was concentrated under reduced pressure to remove ethanol and filtered. The filter pad was washed with 2×10 mL of dilute HCl and the combined filtrates basified to pH 10 with 20% sodium hydroxide and extracted with 3×25 mL portions of chloroform. The combined extracts were dried over magnesium sulfate and concentrated under reduced pressure. Further drying under vacuum gave 0.4 g of product as an oil. MS (m+1)=238.3.

1. temperaturethe mixture heated
2. temperatureto reflux for 4 h
3. concentrationThe cooled mixture was concentrated under reduced pressure
4. customto remove ethanol
5. filtrationfiltered
6. washThe filter pad was washed with 2×10 mL of dilute HCl
7. extractionextracted with 3×25 mL portions of chloroform
8. dry with materialThe combined extracts were dried over magnesium sulfate
9. concentrationconcentrated under reduced pressure
10. customFurther drying under vacuum