反应详情

温度

100 °C

5-bromo-3-nitropicolinonitrile (1 eq) and phenylboronic acid (1.5 eq) was mixed with 15 mL of 1,4-dioxane and 5 mL of 2 M Na2CO3 aqueous solution in a glass pressure tube. The reaction mixture was degassed by anhydrous N2 stream for 5 min followed by the addition of Pd(dppf)Cl2-DCM (0.1 eq). The reaction mixture was stirred at 100° C. for 3 hours. Then the mixture was diluted with 100 mL of ethyl acetate and washed with water, brine, then dried over MgSO4, filtered, and evaporated under reduced pressure to give crude product, which was triturated by DCM, ether, hexanes to give the pure titled compound. LC/MS (m/z): 226.1 (MH+).

1. customThe reaction mixture was degassed by anhydrous N2 stream for 5 min
2. washwashed with water, brine
3. dry with materialdried over MgSO4
4. filtrationfiltered
5. customevaporated under reduced pressure
6. customto give crude product, which
7. customwas triturated by DCM, ether, hexanes