Potassium Hydroxide → 4-(1,3-Dimethyl-1H-pyrazolo[4,3-d]pyrimidin-7-yl)-6-((1-methylisoquinolin-6-yl)ethynyl)pyridin-2-amine

Participants

Reaction Conditions

Reaction Steps

A mixture of tert-butyl-N-{1-[(4-{1,3-dimethyl-1H-pyrazolo[4,3-d]pyrimidin-7-yl}-6-[2-(1-methylisoquinolin-6-yl)ethynyl]pyridin-2-yl)carbamoyl]ethyl}-N-methylcarbamate H2 (150 mg, 0.31 mmol) and potassium hydroxide (1 mol/l solution in MeOH:water=2:1, 3 ml, 3 mmol) is stirred at 60° C. for 2 days. The precipitate is collected and purified by NP chromatography to yield 4-{1,3-dimethyl-1H-pyrazolo[4,3-d]pyrimidin-7-yl}-6-[2-(1-methylisoquinolin-6-yl)ethynyl]pyridin-2-amine. Yield: 110 mg (89%). HPLC-MS: M+H=406; tR=1.07 min (METHOD—1).

Provenance & Evidence