| 摘要 |
The invention relates to a method for producing substituted biphenyls (I) in which: R1 = nitro, amino or NHR3: R2 = CN, NO2, halogen, C1-C6 alkyl, C 2-C6 alkenyl, C2-C6alkynyl, C 1-C6-alkoxy, C1-C6 alkyl halide, C1-C6 alkylcarbonyl or phenyl; R3 = C1-C4alkyl, C2-C4 alkenyl or C2-C4 alkynyl; m = 1 or 2, and; n = 0 to 3. The invention is characterized in that a compound (II) is reacted with a diphenyl borinic acid (III) in the presence of a base and of a palladium catalyst selected from the group consisting of: a) palladium-trialkylphosphine or trialkylphosphine complex with palladium being zero in the oxidation state; b) salt of the palladium in the presence of triarylphosphine or trialkylphosphine serving as a complex ligand or; c) optionally, metallic palladium raised on substrates, in the presence of triarylphospine or trialkylphosphine in a solvent. |
