Programmed Synthesis of Tetraarylthieno[3,2-b]thiophene by Site-Selective Suzuki Cross-Coupling Reactions of Tetrabromothieno[3,2-b]thiophene

Thieno[3,2- b ]thiophene is a structural motif that can be found in many important organic materials. A number of mono-, di- and tetraarylthieno[3,2- b ]thiophenes are reported herein.