Hydrochloric Acid → N4-(9-azaspiro[5.5]undecan-3-yl)-5-chloro-N2-(2,3-dimethylindazol-6-yl)pyrimidine-2,4-diamine

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Reaction Steps

To a solution of tert-butyl 9-((5-chloro-2-((2,3-dimethyl-2H-indazol-6-yl)amino)pyrimidin-4-yl)amino)-3-azaspiro[5.5]undecane-3-carboxylate (161.5 mg, 0.30 mmol) in DCM (10 mL) was added a solution of HCl in EtOAc (10 mL, 40 mmol). The reaction mixture was stirred at rt for 2 h and concentrated in vacuo. The residue was dissolved in water (30 mL) and adjusted to pH=10 with a saturated Na2CO3 aqueous solution, then extracted with DCM (100 mL×3). The combined organic phases were washed with brine (100 mL), dried over anhydrous Na2SO4, concentrated in vacuo. The residue was purified by silica gel column chromatography (MeOH/DCM (v/v)=1/10) to give the title compound as a beige solid (131.6 mg, 100%).

Provenance & Evidence