1-Methyl-4-(piperidin-4-yl)piperazine → HCID 178434420, compound

Participants

Reaction Steps

A solution of 0.80 g (1.9 mmol) of 4-(5-bromofuran-2-yl)-6-(2-fluoro-4-hydroxyphenyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine-5-carbonitrile and 3.56 g (19.4 mmol) of 1-methyl-4-(piperidin-4-yl)piperazine in 55 ml of anhydrous dioxane is refluxed for 7 days. The mixture is concentrated and the residue is purified by chromatography on silica (MeOH gradient in dichloromethane: 5 to 10%) to yield 0.51 g (51%) of 6-(2-fluoro-4-hydroxyphenyl)-3-methyl-4-(5-(4-(4-methylpiperazine-1-yl)piperidin-1-yl)furan-2-yl)-1H-pyrazolo[3,4-b]pyridine-5-carbonitrile in the form of an orange solid.

Provenance & Evidence