反应详情

In 2 ml of methanol were stirred 773 mg of 2-hydroxy-5-(2-chloroethyl)-4-(4-fluorophenyl)thiazole, 683 mg of 4-(3-fluorobenzylidene)piperidine hydrochloride and 1.04 ml of N,N-diisopropylethylamine at 80° C. for 3 days. The reaction solution was concentrated under reduced pressure, and the residue was separated with ethyl acetate and a saturated aqueous sodium bicarbonate solution. The organic layer was washed with a saturated aqueous sodium chloride solution and dried over anhydrous sodium sulfate, and the drying agent was removed by filtration. The filtrate was concentrated under reduced pressure, and the residue was purified by a flash column chromatography (silica gel; ChromatorexNH NHDM1020 (manufactured by Fuji-Davison Chemical Co.), eluent; hexane-ethyl acetate =1:1), and recrystallized from hexane-ethyl acetate to give 265 mg of 2-hydroxy-4-(4-fluorophenyl)-5-[2-[4-(3-fluorobenzylidene)piperidin-1-yl]ethyl]thiazole.

1. concentrationThe reaction solution was concentrated under reduced pressure
2. customthe residue was separated with ethyl acetate
3. washThe organic layer was washed with a saturated aqueous sodium chloride solution
4. dry with materialdried over anhydrous sodium sulfate
5. customthe drying agent was removed by filtration
6. concentrationThe filtrate was concentrated under reduced pressure
7. customthe residue was purified by a flash column chromatography (silica gel; ChromatorexNH NHDM1020 (manufactured by Fuji-Davison Chemical Co.), eluent; hexane-ethyl acetate =1:1)
8. customrecrystallized from hexane-ethyl acetate