Water → 2-(acetylpiperidin-4-ylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile

Beteiligte Stoffe

Reaktionsschritte

Compound (77a) (0.050 g) and triethylamine (0.017 mL) were dissolved in chloroform (1.0 mL), and acetyl chloride (0.017 mL) was added to the resulting mixture, followed by stirring at room temperature for 15 hr. The reaction solution was distributed between chloroform and water. The organic layer was washed with saturated saline and then dried over anhydrous sodium sulfate. The solvent was distilled away to obtain 2-(acetylpiperidin-4-ylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile, which was used in the subsequent reaction without being purified. According to Example 1(7), compound (77) (the second stage yield: 68%) was prepared as a white solid using 2-(acetylpiperidin-4-ylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile instead of compound (1f).

Herkunft & Nachweise