A General Strategy for the Facile Synthesis of 2,7-Dibromo-9-heterofluorenes

A facile, highly efficient, and economical procedure for the preparation of 6,6‘-diiodo-4,4‘-dibromo-3,3‘-dimethoxylbiphenyl has been found. From this compound, a general synthetic strategy for the preparation of 2,7-dibromo-9-heterofluorenes has been developed. Five 2,7-dibromo-9-heterofluorenes have been easily synthesized for the first time according to the procedure presented, opening the door to new classes of inorganic and organometallic conjugated polymeric materials of polyheterofluorenes.