反应详情

Alternatively, to a mixture of 2,6-dichloro-pyrimidin-4-yl-amine (1.64 g, 10.0 mmol), 5-chloro-2-methoxy-phenyl boronic acid (1.84 g, 10.0 mmol), palladium (II) acetate (0.337 g, 1.0 mmol) and triphenylphosphine (0.786 g, 3.0 mmol) was added a solution of sodium carbonate (5.3 g, 50.0 mmol) in water (10 ml) followed by glyme (50 ml). The mixture was stirred under an argon atmosphere for 24 hours. After addition of acetone (50 ml), filtration and concentration of the filtrate provided the crude product which was treated with chloroform (50 ml) and stirred for 1 hour. Filtration provided a solid which was dissolved in ethanol (50 ml). A solution of hydrogen chloride in dioxane (4.0 M, 5 ml) was added and volatiles were evaporated under reduce pressure. The residue was treated with ethyl acetate (25 ml) and stirred for 2 hours. Filtration provided the hydrochloride salt of 2-chloro-6-(5-chloro-2-methoxy-phenyl)-pyrimidin-4-yl-amine (0.42 g, 14% yield).

1. customprovided the crude product which
2. stirringstirred for 1 hour
3. filtrationFiltration
4. customprovided a solid which
5. customvolatiles were evaporated
6. additionThe residue was treated with ethyl acetate (25 ml)
7. stirringstirred for 2 hours
8. filtrationFiltration