反应详情

温度

80 °C

1-(2-Bromo-5-nitro-phenyl)-ethanone (1 g, 4 mmol; prepared similarly to the procedure described in Meisenheimer, J., Zimmermann P., and v. Kummer, U. Ann. der. Chem. 446, pp. 205-228), p-Chlorophenylboronic acid (768 mg, 1.2 eq.), and tetrakis(triphenylphosphine)-palladium(0) (473 mg, 0.1 eq.), were dissolved in 25 mL toluene, 6 mL methanol and 2.5 mL sat. sodium bicarbonate solution. After degassing/sonicating the solution, the sealed reaction vessel was heated to 80° C. overnight. The cooled solution was separated between ethyl acetate and water; the aqueous phase extracted two more times with ethyl acetate, and the organic fractions were combined, dried with sodium sulfate and evaporated. Silica gel chromatography (4:1 hexanes/ethyl acetate) gave 1-(4′-chloro-4-nitro-biphen-2-yl)-ethanone (962 mg).

1. customprepared similarly to the procedure
2. customAfter degassing/sonicating the solution
3. customthe sealed reaction vessel
4. customThe cooled solution was separated between ethyl acetate and water
5. extractionthe aqueous phase extracted two more times with ethyl acetate
6. dry with materialdried with sodium sulfate
7. customevaporated