反应详情

Into a microwave vial was placed [4-(6-amino-5-chloro-pyrimidin-4-ylamino)-phenyl]-acetic acid ethyl ester (1.4 g; 3.423 mmol; 1.0 eq.), (4-phenoxyphenyl)boronic acid (1598.9 mg; 7.470 mmol; 2.18 eq.), palladium acetate (38.4 mg; 0.171 mmol; 0.1 eq.), dicyclohexyl-(2′,6′-dimethoxy-biphenyl-2-yl)-phosphane (140.5 mg; 0.342 mmol; 0.1 eq.), potassium carbonate (1419.2 mg; 10.269 mmol; 3.0 eq.) suspended in dioxane (15.0 ml) and water (1.5 ml). The vial was flushed with nitrogen. The reaction vial was run in a microwave for 3 hours at 150° C. The mixture was filtered, quenched in water and extracted with EtOAc (3×). The combined organic layer were dried over sodium sulfate, filtered and concentrated in vacuo. The crude compound was purified using Biotage column chromatography (50/50% Hexanes/EtOAc to 100% EtOAc). Fractions containing the desired product were collected and concentrated to afford (4-(6-amino-5-(4-phenoxyphenyl)-pyrimidin-4-ylamino)-phenyl)-acetic acid ethyl ester (1.43 g, 90% yield) as a yellow foam. MS: m/z=441 [M+H]+. 1H-NMR (DMSO-d6) δ 8.06 (s, 1H), 7.45 (t, 4H), 7.34 (d, 2H), 7.16 (dd, 8H), 5.77 (bs, 2H), 4.10 (q, 2H), 3.56 (s, 2H), 1.20 (t, 3H).

1. customThe vial was flushed with nitrogen
2. customThe reaction
3. filtrationThe mixture was filtered
4. customquenched in water
5. extractionextracted with EtOAc (3×)
6. dry with materialThe combined organic layer were dried over sodium sulfate
7. filtrationfiltered
8. concentrationconcentrated in vacuo
9. customThe crude compound was purified
10. additionFractions containing the desired product
11. customwere collected
12. concentrationconcentrated