反应详情

温度

120 °C

To methyl 4-(2-amino-5-bromopyridin-3-yl)-2-methylbenzoate (500 mg, 1.557 mmol) in 20 mL MW vial was added 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (421 mg, 2.024 mmol), PdCl2(dppf)DCM (114 mg, 0.156 mmol), DME (11.7 mL) and 2 M Na2CO3 solution (3.892 mL). The reaction mixture was heated at microwave synthesizer (12 min, 120° C.). The reaction mixture was diluted with EtOAc and washed with water three times, dried over Na2SO4, filtered and concentrated. The crude product was purified by flash chromatography eluting with 0-100% of EtOAc (containing 10% of MeOH)/heptane to provide crude product which was triturated with ether to provide 400 mg of pure product in 80% yield. LCMS (m/z): 323.4 (MH+), 0.60 min.

1. washwashed with water three times
2. dry with materialdried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated
5. customThe crude product was purified by flash chromatography
6. washeluting with 0-100% of EtOAc (containing 10% of MeOH)/heptane
7. customto provide crude product which
8. customwas triturated with ether