Discussion Syntheses.-The best general method found for the unambiguous synthesis of polyphenyls was that of the addition of an aryl Grignard or an aryllithium to an aryl cyclic ketone followed by dehydration and aromatization according to the following general scheme.
![2-Cyclohexen-1-one,3-[1,1'-biphenyl]-4-yl-结构式](https://image.chemsrc.com/caspic/131/6301-53-7.png)
![1-phenyl-4-[3-[4-(4-phenylphenyl)phenyl]phenyl]benzene结构式](https://image.chemsrc.com/caspic/184/14739-51-6.png)
