Potassium Phosphate, Tribasic → 2-(2-(4-(7-(1-(oxetan-3-yl)-1H-pyrazol-4-yl)imidazo[1,2-c]pyrimidin-5-yl)-1H-pyrazol-1-yl)spiro[3.3]heptan-2-yl)acetonitrile

Participants

Reaction Conditions

Reaction Steps

2-(2-(4-(7-Chloroimidazo[1,2-c]pyrimidin-5-yl)-1H-pyrazol-1-yl)spiro[3.3]heptan-2-yl)acetonitrile (0.200 g, 0.567 mmol), 1-(oxetan-3-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (Table 2, compound f; 0.213 g, 0.850 mmol), dicyclohexyl(2′,4′,6′-triisopropylbiphenyl-2-yl)phosphine (0.054 g, 0.113 mmol) and K3PO4 (0.85 mL, 1.7 mmol) were suspended in 1,4-dioxane (10 mL) and purged with Ar (g). Pd2dba3 (0.052 g, 0.057 mmol) was added, and the system sealed and heated at 80° C. overnight. The reaction mixture was cooled to ambient temperature and partitioned between saturated aqueous NaHCO3 and EtOAc. The organic layer was washed with brine, dried (MgSO4), filtered and concentrated under reduced pressure to afford the crude material, which was purified by flash column chromatography, eluting with 2-3% (9:1 MeOH:NH4OH)/DCM to provide 2-(2-(4-(7-(1-(oxetan-3-yl)-1H-pyrazol-4-yl)imidazo[1,2-c]pyrimidin-5-yl)-1H-pyrazol-1-yl)spiro[3.3]heptan-2-yl)acetonitrile (0.184 g, 0.418 mmol, 74% yield). MS (apci) m/z=441.2 (M+H).

Provenance & Evidence