Triethylamine → {-4-[3-(6-bromo-pyridin-2-yl)-1-trityl-1H-pyrazolo[3,4-d]pyrimidin-6-ylamino]-cyclohexyl}-carbamic acid tert-butyl ester

Participants

Reaction Conditions

Reaction Steps

The mixture of 3-(6-bromo-pyridin-2-yl)-6-chloro-1-trityl-1H-pyrazolo[3,4-d]pyrimidine (from Example 34 supra) (3.8 g, 6.89 mmol), tert-butyl (1r,4r)-4-aminocyclohexylcarbamate (1.8 g, 8.40 mmol) and Et3N (1.2 mL, 8.3 mmo,) in IPA (80 mL) was stirred at 90° C. for 15 hours. The reaction was cooled to room temperature and the precipitate was collected by filtration to give {-4-[3-(6-bromo-pyridin-2-yl)-1-trityl-1H-pyrazolo[3,4-d]pyrimidin-6-ylamino]-cyclohexyl}-carbamic acid tert-butyl ester as white powder. (Yield 1.5 g, 30%).

Provenance & Evidence