Efficient Pd-Catalyzed Coupling Reaction of Cationic Cyclopentadienyliron Complexes of Chloro-substituted Arenes with Arylboronic Acid

Cationic cyclopentadienyliron complexes of chloro-substituted arenes were found to perform efficient Pd-catalyzed cross-coupling reactions with arylboronic acids under mild conditions. Using this method, some new cationic cyclopentadienyliron complexes of biaryl derivatives (Fc–Bi) were obtained with good yields. After a photolysis reaction of the obtained Fc–Bi, some biaryl derivatives were easily obtained. Results in the present study provided a practical route to the preparation of Fc–Bi and biaryl derivatives.