Journal Article Selectivity of Reaction Sites for Direct Arylation Polycondensation in Bithiophene Derivatives

Fujie, Yohei  ,  Kuwabara, Junpei  ,  Kanbara, Takaki

622 ( 1 )  , pp.14 - 18 , 2015-12 , Taylor and Francis, Inc
Direct arylation polycondensation has recently emerged as the method for the synthesis of π-conjugated polymers. In developing this methodology, site selectivity of the reacting C-H bonds is one of the most important issues. Herein, we investigate the direct arylation polycondensation of bithiophene and dialkylbithiophenes to assess site selectivity. We found that low temperature was a key factor for high selectivity in bithiophene, and that 4,4′-dicyclohexylbithiophene exhibited the highest selectivity among the tested dialkylbithiophenes reaction sites.

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