Bis[bis-(4-alkoxyphenyl)amino] Derivatives of Dithienylethene, Bithiophene, Dithienothiophene and Dithienopyrrole: Palladium-Catalysed Synthesis and Highly Delocalised Radical Cations
作者:Susan A. Odom、Kelly Lancaster、Luca Beverina、Kelly M. Lefler、Natalie J. Thompson、Veaceslav Coropceanu、Jean-Luc Brédas、Seth R. Marder、Stephen Barlow
DOI:10.1002/chem.200700668
日期:2007.11.26
2'-bithiophene (2), 2,6-bis[bis(4-butoxyphenyl)amino]dithieno[3,2-b:2',3'-d]thiophene (3), N-(4-tert-butylphenyl)-2,6-bis[bis(4-methoxyphenyl)amino]dithieno[3,2-b:2',3'-d]p yrrole (4 a) and N-tert-butyl-2,6-bis[bis(4-methoxyphenyl)amino]dithieno[3,2-b:2',3'-d]pyrrole (4 b)--have been synthesised. The syntheses make use of the palladium(0)-catalysed coupling of brominated thiophene species with diarylamines
具有基于噻吩的桥的五种二胺-(E)-1,2-双5- [双(4-丁氧基苯基)氨基] -2-噻吩基}乙烯(1),5,5'-双[双(4) -甲氧基苯基)氨基] -2,2'-联噻吩(2),2,6-双[双(4-丁氧基苯基)氨基]二噻吩并[3,2-b:2',3'-d]噻吩(3) ,N-(4-叔丁基苯基)-2,6-双[双(4-甲氧基苯基)氨基]二硫代[3,2-b:2',3'-d] p吡咯(4 a)和N-已经合成了叔丁基-2,6-双[双(双(4-甲氧基苯基)氨基]二硫代[3,2-b:2',3'-d]吡咯(4 b)。该合成利用了钯(0)催化的溴化噻吩物质与二芳基胺的偶联,在某些情况下通过微波辐射加速了偶联。所有分子都容易进行氧化,相对于二茂铁/二茂铁,4b在-0.4 V时最容易被氧化,通过向中性物质中加入三(4-溴苯基)六氯锑酸铵生成相应的自由基阳离子的溶液。自由基阳离子的近红外光谱显示出对称离域物质(即