Potassium Carbonate → 5-chloro-3-{5-[2-(1-hydroxy-1-methyl-ethyl)-pyrimidin-4-yl]-2-methyl-phenyl}-6-(4-methoxy-benzyloxy)-2-methyl-3H-pyrimidin-4-one

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-chloro-6-(4-methoxy-benzyloxy)-2-methyl-3-(2-methyl-5-propynoyl-phenyl)-3H-pyrimidin-4-one from Step H (660 mg, 1.56 mmol) in acetonitrile (3 mL) was added 2-hydroxy-2-methylpropionamidine HCl (324 mg, 2.34 mmol) and potassium carbonate (645 mg, 4.68 mmol) and heated at 75° C. for eighteen hours. The reaction was returned to ambient temperature and filtered to remove excess salts. The filtrate was concentrated to provide a dark red oil. Normal phase chromatography (ethyl acetate/heptanes) provided the pyrimidine as a yellow oil (336 mg, 42%). MS (M+H): 507

Provenance & Evidence