3-(4-Piperidyl)-6-fluoro-1,2-benzisoxazole → 4-[3-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]-2-hydroxy-1-propoxy]-3-methoxyphenyl methanone

Participants

Reaction Conditions

Reaction Steps

A stirred mixture of 4-(2,3-epoxypropoxy)-3-methoxyphenyl methanone (4.5 g, 22.5 mmol) and 4-(6-fluoro-1,2-benzisoxazol-3-yl)piperidine (5.36 g, 24.3 mmol) in isopropyl alcohol (150 ml) was heated at 55° C. for 16 hours. The mixture was cooled and the solvent was removed on a rotary evaporator. The residue was purified by flash chromatography over a silica gel column (SiO2, 80 g; eluted with dichloromethane, DCM, and 1% CH3OH in DCM). The oil thus obtained solidified quickly, weight: 9.47 g. Recrystallization from ethanol and isopropyl ether, then toluene provided 8.6 g (86%) of white crystals, m.p.=107°-108° C. ANALYSIS: Calculated for C24H27FN2O5 : 65.15%C 6.15%H 6.33%N Found: 65.35%C 6.04%H 6.05%N

Provenance & Evidence