反应详情

A solution of hydrochloric acid in dioxane (4M, 10 mL) was added to a solution of tert-butyl (2-oxo-2-{(3R)-3-[(6-pyrazolo[1,5-a]pyridin-3-ylpyrazin-2-yl)amino]piperidin-1-yl}ethyl)carbamate (Preparation 38, 88 mg, 0.23 mmol) in methanol (3 mL) and the resulting mixture was stirred at ambient temperature for one hour. The solvents were then evaporated to half of their volume and the yellow solid that precipitated was filtered, washed with diethyl ether and dried to give the title compound (76 mg, 95%).

1. customThe solvents were then evaporated to half of their volume
2. customthe yellow solid that precipitated
3. filtrationwas filtered
4. washwashed with diethyl ether
5. customdried