反应详情

温度

100 °C

The product of Step 1 (112 mg, 0.40 mmol), N-[3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-4-(trifluoromethyl)pyrimidin-2-amine (Intermediate 3, 150 mg, 0.40 mmol), and PdCl2(dppf)-CH2Cl2 (29 mg, 0.040 mmol) were combined in a flask, sealed, and purged with nitrogen (2×). Dioxane (2.4 mL) and 2 M Na2CO3 (0.59 mL, 1.19 mmol) were added, and the reaction was purged again with nitrogen (2×). The mixture was stirred in an oil bath at 100° C. overnight. The dark brown reaction was diluted with water and extracted with ethyl acetate (2×). The combined organic layers were washed with brine, dried (MgSO4), filtered and evaporated. Flash chromatography (0-50% ethyl acetate in hexanes) afforded N-(3-methyl-5-{2-[2-(methylsulfonyl)propan-2-yl]-1,3-thiazol-5-yl}phenyl)-4-(trifluoromethyl)pyrimidin-2-amine (140 mg, 78%) as a colorless solid. MS ESI: [M+H]+ m/z 457.0. 1H NMR (500 MHz, DMSO-d6) δ 10.29 (s, 1H), 8.84 (d, J=4.9, 1H), 8.16 (s, 1H), 8.03 (s, 1H), 7.49 (s, 1H), 7.29 (d, J=4.9, 1H), 7.22 (s, 1H), 2.96 (s, 3H), 2.32 (s, 3H), 1.83 (s, 6H). rhSYK activity=+++

1. customsealed
2. custompurged with nitrogen (2×)
3. customthe reaction was purged again with nitrogen (2×)
4. customThe dark brown reaction
5. extractionextracted with ethyl acetate (2×)
6. washThe combined organic layers were washed with brine
7. dry with materialdried (MgSO4)
8. filtrationfiltered
9. customevaporated