A new method has been developed for the synthesis of linear m-polyphenyls. This procedure involves the following steps:(1) chalcone formation,(2) Michael condensation and ring closure,(3) decarbethoxylation,(4) reduction,(5) dehydration, and (6) aromatization. The preparation of m-terphenyls, m-quinquephenyls, certain intermediates, and the possible preparation of m-sexaphenyls will be discussed.
![1-(dibromomethyl)-3-[3-(dibromomethyl)phenyl]benzene结构式](https://image.chemsrc.com/caspic/480/63838-47-1.png)
