反应详情

2-(Trifluoroacetyl)-7-(trifluoromethyl)-1,2,3,4-tetrahydroisoquinoline (4.1 g, 12 mmol) was dissolved in ethanol (16.0 mL). Potassium carbonate (4.0 g, 29 mmol) and water (4 mL) were added and the mixture was refluxed for 2 h. After cooling, the solution was diluted with water and extracted with dichloromethane four times. The combined extracts were dried (MgSO4), filtered, and concentrated. Purification by high pressure chromatography on silica gel eluting with a gradient of 100% A to 20% B (A=1% NH4OH/5% MeOH/EtOAc; B=1% NH4OH/MeOH) over 13 min provided the title compound (1.4 g, 59%). MS calculated for C10H10F3N: (M+H)+202; found 202.0.

1. temperaturethe mixture was refluxed for 2 h
2. temperatureAfter cooling
3. extractionextracted with dichloromethane four times
4. dry with materialThe combined extracts were dried (MgSO4)
5. filtrationfiltered
6. concentrationconcentrated
7. customPurification by high pressure chromatography on silica gel eluting with a gradient of 100% A to 20% B (A=1% NH4OH/5% MeOH/EtOAc