反应详情

To a solution containing 7.54 g (0.02 mol) of (+)-cis-1-benzyl-4-(4-fluorophenyl)-3-mesyloxymethylpiperidine in 120 ml of tertiary butanol, 3 g (0.022 mol) of sesamol and 3.35 g (0.03 mol) of potassium tertiary butoxide are added and the mixture is boiled under reflux for 12 hours. After completion of the reaction the mixture is evaporated and 100 ml of dichloromethane and 50 ml of water are added to the residue. After separation, the organic phase is washed with water until neutral, dried over a drying agent and after filtration the filtrate is evaporated to solvent-free. The evaporation residue is recrystallized from 25 ml of isopropanol. The precipitated product is filtered at 0° C. to obtain 5.37 g (64%) of title compound, m.p.: 98-100° C.; [α]D20−37.1° (c=1, chloroform).

1. additionare added
2. temperatureunder reflux for 12 hours
3. customAfter completion of the reaction the mixture
4. customis evaporated
5. addition100 ml of dichloromethane and 50 ml of water are added to the residue
6. customAfter separation
7. washthe organic phase is washed with water until neutral,
8. customdried over a drying agent
9. filtrationafter filtration the filtrate
10. customis evaporated to solvent-free
11. customThe evaporation residue is recrystallized from 25 ml of isopropanol
12. filtrationThe precipitated product is filtered at 0° C.