Ethanol → HCID 68295072, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of ethyl 6-(4-(hydroxymethyl)phenyl-1-isopropyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (0.81 g, 2.38 mmol) in EtOH (15 mL), aqueous NaOH (0.47 g, 11.94 mmol) was added and reaction mixture stirred at 60° C. for 1 h. After completion of the reaction, ethanol was removed under reduced pressure and it was acidified using 10% citric acid solution. Extraction was carried out using 5% MeOH/DCM. The combined organic layers were washed with water & dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure to afford compound which was pure enough to use as such for next step. A solution of acid compound (0.61 g, 1.96 mmol) and 3-(aminomethyl)-4,6-dimethylpyridin-2(1H)-one (0.596 g, 3.92 mmol) in DMSO (5 mL) and was stirred at room temperature for 15 min. Then PYB OP (1.52 g, 2.94 mmol) was added to it and stirring was continued for 12 hr. After completion of the reaction, saturated NaHCO3 solution was added to it and extraction was carried out using 20% MeOH/DCM. The combined organic layers were washed with water, dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure to afford crude material which was purified by column chromatography to afford the desired compound as white solid (0.71 g, 81.4%).

Provenance & Evidence