The syntheses of some quater-and quinquephenyls has been reported earlier from this Lab0ratory. l These methods have now been utilized to obtain more complex cyclohexenones, larger polyphenyls and bromopolyphenyls. 4-Bromo-m-terphenyl has now been prepared by the two formula sequences (A) and (B). The products I1 and IV are indistinguishable, although on the basis of the above reactions they should be isomeric. ...
![5,6-二氢[1,1'-联苯]-3(4H)-酮结构式](https://image.chemsrc.com/caspic/412/10345-87-6.png)