Hydrochloric Acid → 5-methyl-N2-(1-methyl-1H-pyrazol-4-yl)-N4-(3-azaspiro[5.5]undecan-9-yl)pyrimidine-2,4-diamine

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Reaction Steps

To a solution of tert-butyl 9-((5-methyl-2-((1-methyl-1H-pyrazol-4-yl)amino)pyrimidin-4-yl)amino)-3-azaspiro[5.5]undecane-3-carboxylate (400 mg, 0.88 mmol) in DCM (20 mL) was added a solution of HCl in EtOAc (20 mL, 80 mmol). The reaction mixture was stirred at rt overnight and concentrated in vacuo. The residue was dissolved in water (50 mL) and adjusted to pH=10 with a saturated Na2CO3 aqueous solution, then extracted with DCM (200 mL×3). The combined organic phases were washed with brine (200 mL), dried over anhydrous Na2SO4, then filtered and concentrated in vacuo. The residue was purified by silica gel column chromatography (a solution of NH3 in MeOH (7 M)/MeOH/DCM (v/v/v)=1/20/60) to give the title compound as a beige solid (100.2 mg, 32%).

Provenance & Evidence