Dichloromethane → US9290457, Example 17

Participants

Reaction Conditions

Reaction Steps

4-[5-Acetyl-3,6-dimethyl-2-oxo-1-(3-trifluoromethyl-phenyl)-1,2,3,4-tetrahydro-pyrimidin-4-yl]-3-bromo-benzonitrile (intermediate 4)(300 mg, 0.61 mmol) and (1-methyl-2-oxo-4-pyridyl)boronic acid (121 mg, 0.79 mmol) are suspended in acetonitrile (9 mL) and are degassed with a stream of argon. Potassium carbonate solution (2 mol/L, 914 μL, 1.83 mmol) and 1.1-bis(diphenylphosphino)-ferrocendichloropalladium(II), complex with dichloromethane (1:1) (9.95 mg, 0.012 mmol) are added and the reaction is shaken at 75° C. overnight. The reaction mixture is filtrated over a layer of silica gel and basic aluminum oxide 1:1 and purified by reversed phase HPLC. Yield: 142 mg; ESI mass spectrum [M+H]+=521; Retention time HPLC: 0.99 min (HPLC method Z018_S04).

Provenance & Evidence