Acetonitrile → 1-[4-[3-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]propoxy]-3-hydroxyphenyl]ethanone

Participants

Reaction Steps

A stirred mixture of 6-fluoro-3-(4-piperidinyl)-1,2-benzisoxazole (2.8 g, 13 mmol ), NaHCO3 (1.1 g), several crystals of KI, 1-[4-(3-chloropropoxy)-3-hydroxyphenyl]ethanone, and acetonitrile (100 ml) was refluxed for 16 hours. The reaction was poured into water, and the aqueous mixture was extracted with ethyl acetate. The organic extract was washed (water), dried (MgSO4), and the solvent was concentrated to afford 5.7 g of a thick yellow oil. The oil was chromatographed on a Waters Prep 500 LC on silica gel, eluting with 7% methanol/methylene chloride. Concentration of the appropriate fraction afforded a yellow oil, which upon standing yielded 3.5 g of the compound as a pale, yellow solid. The solid was recrystallized from ethyl alcohol to afford 2.7 g (50%) of 1-[4-[3-14-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]propoxy]-3-hydroxyphenyl]ethanone as a pale yellow solid, m.p.=122-124° C.

Provenance & Evidence