反应详情

To a mixture of 3,4,5-trifluoronitrobenzene (3.894 g, 0.022 mol) and 4-piperidone hydrochloride monohydrate (3.072 g, 0.020 mol) in chloroform (24 ml), was added triethylamine (8.3 ml, 0.06 mol) under stirring. The resulting mixture was heated and stirred at 70° C. for 7 h. After completion of the reaction (TLC), the solvent was evaporated under reduced pressure and the residue diluted with water (10 ml). The separated solid was filtered, washed with water (8 ml) followed by hexane (5 ml) to obtain yellow crystalline solid as a product, 4.8 g, 94% yield M.P.: 130-132° C.; MS: M+1=257 (MH+ 100%) for M.F.: C11H10F2N2O3

1. temperatureThe resulting mixture was heated
2. stirringstirred at 70° C. for 7 h
3. customAfter completion of the reaction (TLC)
4. customthe solvent was evaporated under reduced pressure
5. additionthe residue diluted with water (10 ml)
6. filtrationThe separated solid was filtered
7. washwashed with water (8 ml)
8. customto obtain yellow crystalline solid as a product