Dimethylformamide → HCID 15382660, compound

Participants

Reaction Conditions

Reaction Steps

A stirred mixture of 6-fluoro-3-(1-piperazinyl)-1H-indazole (2.3 g, 100 mmol), K2CO3 (1.5 g), 1-[4-(3-chloropropoxy)-3-methoxyphenyl]ethanone (2.8 g, 11 mmol), several crystals of KI and dimethylformamide (60 ml) was heated at 90° C. for 16 hours. The reaction was poured into H2O, and the aqueous suspension was extracted with ethyl acetate. The ethyl acetate was washed (H2O), dried (MgSO4) and concentrated to afford 5.0 g of a yellow oil. The oil was chromatographed on a Waters Prep 500 utilizing silica gel columns and eluting with methylene chloride/methanol (7%). Concentration of the desired fractions yielded 2.0 g (46%) of an off-white solid. This sample was combined with 1.0 g of a previous sample, and this was recrystallized from toluene to afford 2.6 g of 1-[4-[3-[4-(6-fluoro-1H-indazol-3-yl)-1-piperazinyl]-propoxy]-3-methoxyphenyllethanone as a white solid, m.p.=135°-137° C.

Provenance & Evidence