(2-(4-Methylpiperidin-1-yl)-6-(trifluoromethyl)pyridin-3-yl)methanamine → 1-((2-(4-methylpiperidin-1-yl)-6-(trifluoromethyl)pyridin-3-yl)methyl)-3-(1H-pyrazolo[3,4-b]pyridin-5-yl)urea

Participants

Reaction Conditions

Reaction Steps

To a solution of phenyl 1H-pyrazolo[3,4-b]pyridin-5-ylcarbamate (C) (84 mg, 0.329 mmol) in acetonitrile was added DMAP (40 mg, 0.329 mmol) and (2-(4-methylpiperidin-1-yl)-6-(trifluoromethyl)pyridin-3-yl)methanamine (D) (90 mg, 0.329 mmol) at room temperature. The reaction mixture was heated to 50° C. for 15 h. TLC showed complete consumption of starting material. The reaction mixture was diluted with water and extracted with ethyl acetate. The organic part was washed with water and brine. The organic layer was dried over MgSO4 and concentrated under reduced pressure. The crude was purified by column chromatography to give pure 1-((2-(4-methylpiperidin-1-yl)-6-(trifluoromethyl)pyridin-3-yl)methyl)-3-(1H-pyrazolo[3,4-b]pyridin-5-yl)urea (example compound 5) (102 mg, 71%).

Provenance & Evidence