Consecutive Thiophene-Annulation Approach to π-Extended Thienoacene-Based Organic Semiconductors with [1]Benzothieno[3,2-<i>b</i>][1]benzothiophene (BTBT) Substructure
作者:Takamichi Mori、Takeshi Nishimura、Tatsuya Yamamoto、Iori Doi、Eigo Miyazaki、Itaru Osaka、Kazuo Takimiya
DOI:10.1021/ja406257u
日期:2013.9.18
to the [1]benzothieno[3,2-b][1]benzothiophene (BTBT) substructure featuring two consecutive thiophene-annulation reactions from o-ethynyl-thioanisole substrates and arylsulfenyl chloride reagents that can be easily derived from arylthiols. The method is particularly suitable for the synthesis of unsymmetrical derivatives, e.g., [1]benzothieno[3,2-b]naphtho[2,3-b]thiophene, [1]benzothieno[3,2-b]anthra[2
我们描述了 [1] 苯并噻吩并 [3,2-b][1] 苯并噻吩 (BTBT) 亚结构的新合成路线,该亚结构具有来自邻乙炔基-苯硫醚底物和芳基亚磺酰氯试剂的两个连续噻吩环化反应,这些反应很容易衍生来自芳硫醇。该方法特别适用于不对称衍生物的合成,例如[1]苯并噻吩并[3,2-b]萘并[2,3-b]噻吩、[1]苯并噻吩并[3,2-b]蒽[2] 3-b]噻吩和萘并[3,2-b]噻吩并[3,2-b]蒽[2,3-b]噻吩,一种含硒衍生物,[1]苯并噻吩并[3,2-b] [1]苯并硒酚。它还允许我们访问具有两个 BTBT 子结构的 π 扩展衍生物,例如,双 [1] 苯并噻吩并 [2,3-d:2',3'-d']benzo[1,2-b:4,5 -b']二噻吩和双[1]苯并噻吩[2,3-d:2',3'-d']萘并[2,3-b:6,7-b']二噻吩(BBTNDT)。应该强调的是,这些新的BTBT衍生物很难合成。