Palladium-Catalyzed C-H Homocoupling of Thiophenes: Facile Construction of Bithiophene Structure

摘要

Organic molecules bearing heteroaromatic moieties have attracted great attention recently as potential advanced materials. In particular, oligothiophenes have been a major concern of excellent conductivity, electroluminescent behaviors, and characteristics as organic TFT. A transition metal-catalyzed coupling reaction via condensation of metalated thiophene and/or thienyl halide might be a method of choice for the construction of oligothiophenes; however, it would be more straightforward if the carbon-carbon bond formation is achieved directly by functionalization of a C-H bond of heteroaromatics.