Potassium Carbonate → HCID 10386866, compound

Participants

Reaction Conditions

Reaction Steps

A stirred mixture of 6-fluoro-3-(4-piperidinyl)-1,2 benzisoxazole hydrochloride (5.5 g 21.6 mmol), K2CO3(3.5 g), 1-[4-(3bromopropoxy)-2-methylphenyl]-ethanone (4.83 g, 17.8 mmol) in dimethylformamide (25 ml) and acetonitrile (75 ml) was heated at 120° C. for 5 hours. At the end of the reaction, the solvent was removed and the residue was extracted into dichloromethane (300 ml) and the solution was washed with water and brine. The organic solution was dried and evaporated to a crude oil. The purification was done by flash chromatography over a silica gel column (80 g, eluted with dichloromethane, 1 l; 1% methanol: dichloromethane, 1.2 l; 2% methanol dichloromethane, 1.2 l). The purest fractions were combined and afforded 291 g of solid. Recrystallization from dichloromethane and ethanol gave 1-[4-[3-4-(6fluoro-1,2-benzisoxazol-3yl)-1-piperidinyl]propoxy]-2-methylphenyl]ethanone as off-white crystals: 2.42 g, m.p.=113-114° C.

Provenance & Evidence