Water → 5-(3,5-difluorophenylthio)-N-(4-(4-methylpiperazin-1-yl)-2-(tetrahydro-2H-pyran-4-ylamino)benzyl)-1H-pyrazolo[3,4-b]pyridin-3-amine

Participants

Reaction Conditions

Reaction Steps

100 mg (0.173 mmol) of N-(5-(3,5-difluorophenylthio)-1-H-pyrazolo[3,4-b]pyridine-3-yl)-4-(4-methylpiperazine-1-yl)-2-(tetrahydro-2H-pyran-4-ylamino)benzamide is added, in small fractions, to a solution of 19.64 mg (0.518 mmol) of LiAlH4 in 3 ml of anhydrous tetrahydrofuran under argon at 0° C. The reaction mixture is heated at 90° C. for 15 hours. An additional portion of 20 mg of LiAlH4 is then added and the reaction medium stirred at 90° C. for 5 hours. 45 μl of water at 0° C. is then added to the reaction mixture, followed by 45 μl of sodium hydroxide (15% wt) and finally 120 μl of water. The reaction mixture is stirred at 25° C. for 1 hour and then filtered on Dicalite. After evaporation of the solvents, the crude product is purified by chromatography. 16.80 mg (17%) of 5-(3,5-difluorophenylthio)-N-(4-(4-methylpiperazin-1-yl)-2-(tetrahydro-2H-pyran-4-ylamino)benzyl)-1H-pyrazolo[3,4-b]pyridin-3-amine in the form of a yellow solid is obtained.

Provenance & Evidence