Benzothiophene or Benzofuran Bridges in Diaryl Ethenes: Two-Step Access by Pd-Catalyzed CH Activation and Theoretical/Experimental Studies on Their Photoreactivity
作者:Kedong Yuan、Julien Boixel、Agisilaos Chantzis、Denis Jacquemin、Véronique Guerchais、Henri Doucet
DOI:10.1002/chem.201402768
日期:2014.8.4
A series of terarylenes incorporating benzothiophene (BT)/benzofuran (BF) as the central ethene unit was synthesised by using sequential Pd‐catalysed CH activation reactions. This new methodology allows the easy modification of the nature of the pendant heteroarene groups. Diaryl ethene (DAE) derivatives with thiophene, thiazole, pyrrole, isoxazole and pyrazole rings were prepared. A large number
通过使用顺序的Pd催化的CH活化反应,合成了一系列以苯并噻吩(BT)/苯并呋喃(BF)为中心的亚芳基。这种新的方法可以轻松地修饰杂亚芳基侧基的性质。制备了具有噻吩,噻唑,吡咯,异恶唑和吡唑环的二芳基乙烯(DAE)衍生物。通过这种新方法,可以在BT和BF中轻松访问大量不对称DAE系列。对它们在溶液中的光致变色性质的研究表明,杂芳烃和中央单元的性质极大地改变了它们的光致变色行为。进行TD-DFT计算以评估相关激发态的性质。