Sodium Carbonate → (S)-2-amino-4-((1-(5-(2-methylpyrimidin-5-yl)-4-oxo-3-phenyl-3,4-dihydroquinazolin-2-yl)ethyl)amino)pyrimidine-5-carbonitrile

Participants

Reaction Conditions

Reaction Steps

To a mixture of (S)-2-amino-4-((1-(5-chloro-4-oxo-3-phenyl-3,4-dihydroquinazolin-2-yl)ethyl)amino)pyrimidine-5-carbonitrile 59 (50 mg, 0.12 mmol) and 2-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine (40 mg, 0.18 mmol) in a 4:1 mixture of 1,4-dioxane and water (4 mL) in a sealed tube, Na2CO3 (38 mg, 0.36 mmol), RuPhos (28 mg, 0.06 mmol) and Pd(OAc)2 (6.8 mg, 0.03 mmol) were added. The mixture was degassed and back-filled with argon (three cycles) and then stirred at 120° C. for 1 h. The reaction 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 the product, (S)-2-amino-4-((1-(5-(2-methylpyrimidin-5-yl)-4-oxo-3-phenyl-3,4-dihydroquinazolin-2-yl)ethyl)amino)pyrimidine-5-carbonitrile 63. ESI-MS m/z: 476.2 [M+H]+.

Provenance & Evidence