Sodium Carbonate → (S)-2-(1-((2-aminopyrido[3,2-d]pyrimidin-4-yl)amino)ethyl)-5-(2-methylpyrimidin-5-yl)-3-phenylquinazolin-4(3H)-one

Participants

Reaction Conditions

Reaction Steps

To a solution of (S)-2-(1-((2-aminopyrido[3,2-d]pyrimidin-4-yl)amino)ethyl)-5-chloro-3-phenylquinazolin-4(3H)-one (30 mg, 0.067 mmol) and 2-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine (22 mg, 0.1 mmol) in 1,4-dioxane-H2O (4:1, 2 mL) in a sealed tube, 2-dicyclohexylphosphino-2′,6′-diisopropoxybiphenyl (15.6 mg, 0.034 mmol), palladium(II) acetate (3.8 mg, 0.017 mmol), and Na2CO3 (21 mg, 0.20 mmol) were added sequentially. The mixture was degassed and backfilled with argon (three cycles), and then stirred at 120° C. for 1 h. The mixture was allowed to cool to RT, and then partitioned between ethyl acetate and water. The organic layer was washed with brine, dried over Na2SO4 and filtered. The filtrate was concentrated in vacuo and the residue was purified by ISCO column chromatography (silica gel cartridge, 0-10% MeOH/DCM) to afford compound I-91, (S)-2-(1-((2-aminopyrido[3,2-d]pyrimidin-4-yl)amino)ethyl)-5-(2-methylpyrimidin-5-yl)-3-phenylquinazolin-4(3H)-one (17 mg, 50% yield). ESI-MS m/z: 502.2 [M+H]+.

Provenance & Evidence