Methylamine → HCID 25261558, compound

Participants

Reaction Steps

A solution of 4-(1-benzyl-4-(8-oxa-3-azabicyclo[3.2.1]octan-3-yl)-1H-pyrazolo[3,4-d]pyrimidin-6-yl)aniline (22 mg, 0.05 mmol) in a mixture of dichloromethane (3 mL) and tetrahydrofuran (2 mL) was treated with triphosgene (8 mg, 0.03 mmol) as a solution in dichloromethane (1 mL). After the passage of 5 minutes, the appropriate nucleophile—in the case, 2.0 M methylamine solution in tetrahydrofuran (1 mL)—was added to the 3-(1-benzyl-6-(4-isocyanatophenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-8-oxa-3-azabicyclo[3.2.1]octane (“isocyanate”) mixture. The reaction mixture was concentrated to dryness under reduced pressure. The residue 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 100% acetonitrile to provide 1-{4-[1-benzyl-4-(8-oxa-3-azabicyclo[3.2.1]oct-3-yl)-1H-pyrazolo[3,4-d]pyrimidin-6-yl]phenyl}-3-methylurea. MS (ES+): 470.0 (M+H)+

Provenance & Evidence