反应详情

Tert-butyl 7-(6-(4-(3-pyridin-4-ylureido)phenyl)-1-(2,2,2-trifluoroethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-9-oxa-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate.hydrochloride (256 mg, 0.38 mmol) was dissolved in dichloromethane (20 mL) with the aid of a minimum volume of methanol. The solution was treated with 4 N hydrogen chloride in dioxane (2 mL), which caused the precipitation of a white solid within 10 minutes. The solid was collected by Buchner filtration, washed with methanol, and dried under house vacuum. A portion of the crude solid (assumed dihydrochloride) was purified by reverse-phase high performance liquid chromatography using a Phenomenex Prodigy 21 mm×250 mm column, running a gradient elution of 5% acetonitrile/95% of 0.1% aqueous trifluoroacetic acid to 65% acetonitrile to provide 1-{4-[4-(9-oxa-3,7-diazabicyclo[3.3.1]non-3-yl)-1-(2,2,2-trifluoroethyl)-1H-pyrazolo[3,4-d]pyrimidin-6-yl]phenyl}-3-pyridin-4-ylurea.2TFA (22 mg). MS (ES+): 540.2 (M+H)+

1. customthe precipitation of a white solid within 10 minutes
2. filtrationThe solid was collected by Buchner filtration
3. washwashed with methanol
4. customdried under house vacuum
5. customA portion of the crude solid (assumed dihydrochloride) was purified by reverse-phase high performance liquid chromatography
6. washa gradient elution of 5% acetonitrile/95% of 0.1% aqueous trifluoroacetic acid to 65% acetonitrile