反应详情

A mixture of 6-fluoro-3-(4-piperidinyl)-1,2-benzisoxazole (3.0 g, 13.6 mmol), 1-[4-[(3-chloropropyl)-thio]-3-methoxyphenyl]ethanone (3.5 g, 13.6 mmol), K2CO3 (2.3 g, 16.6 mmol), KI (200 mg) and CH3CN (100 ml) was stirred at reflux under nitrogen for 7.5 hours and then was left at ambient temperature for 65 hours. The reaction was poured into water and the aqueous mixture was extracted with ethyl acetate. The ethyl acetate extract was washed twice with water, once with brine and dried over MgSO4. The solvent was removed in vacuo to afford 6.8 g of a light brown oil. The sample was purified by flash chromatography. Concentration of appropriate fractions yielded 3.0 g. Recrystallization from ethanol provided 2.4 g (41%) of 1-[4-[3-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1 -piperidinyl]propyl]thio]-3-methoxyphenyl]ethanone as a beige solid, m.p.=93°-95° C.

1. temperatureat reflux under nitrogen for 7.5 hours
2. extractionthe aqueous mixture was extracted with ethyl acetate
3. extractionThe ethyl acetate extract
4. washwas washed twice with water, once with brine
5. dry with materialdried over MgSO4
6. customThe solvent was removed in vacuo