Synthesis of Annulated Arenes and Heteroarenes by Hydriodic Acid and Red Phosphorus Mediated Reductive Cyclization of 2-(Hetero)aroylbenzoic Acids or 3-(Hetero)arylphthalides
作者:Arasambattu Mohanakrishnan、Settu Rafiq
DOI:10.1055/s-0036-1588337
日期:——
Annulated arenes and hetarenes were prepared in good to very good yields by hydriodic acid/red phosphorus mediated reductive cyclization of 3-(hetero)aryl phthalides. The reductive cyclization also proceeded successfully with 2-aroylbenzoic acids and 2-aroylnaphthoic acids.
Syntheses of 7-Substituted Anthra[2,3-<i>b</i>]thiophene Derivatives and Naphtho[2,3-<i>b</i>:6,7-<i>b’</i>]dithiophene
作者:Mustafa A. Al-jumaili、Simon Woodward
DOI:10.1021/acs.joc.8b01770
日期:2018.9.21
7-R-Anthra[2,3-b]thiophene derivatives (1, R = H, Me, i-Pr, or MeO) are prepared in three steps (in average overall yield >50%) starting from (E)-4-RC6H4CH2(HOCH2)C═CI(CH2OH). The latter are commercial or readily prepared from 2-butyne-1,4-diol and ArCH2Cl (both costing <1 cent/mmol) at 10 g scales. These allow for the selective formation of (otherwise unattainable) higher solubility 7-derivatives
从(E)-开始,分三步制备7-R-蒽[2,3- b ]噻吩衍生物(1,R = H,Me,i -Pr或MeO)(平均总收率> 50%)。 4-RC 6 H 4 CH 2(HOCH 2)C═Cl(CH 2 OH)。后者是商购的或易于由2-丁炔-1,4-二醇和ArCH 2 Cl(均成本<1美分/毫摩尔)以10 g规模制备。这些允许选择性地形成(否则无法获得的)更高溶解度的7-衍生物。相似的方法可用于制备萘[2,3- b:6,7- b' ]二噻吩2 使用同样低成本的原材料。
Abstract A simple and straightforward method for the synthesis of anthra[2,3-b]furan, anthra[2,3-b]thiophene, and anthra[2,3-b]selenophene from readily available 2-methoxyanthracene is described. A simple and straightforward method for the synthesis of anthra[2,3-b]furan, anthra[2,3-b]thiophene, and anthra[2,3-b]selenophene from readily available 2-methoxyanthracene is described.
摘要 描述了一种简单易行的方法,用于从容易获得的2-甲氧基蒽合成蒽[2,3- b ]呋喃,蒽[2,3- b ]噻吩和蒽[2,3- b ]硒吩。 描述了一种简单易行的方法,用于从容易获得的2-甲氧基蒽合成蒽[2,3- b ]呋喃,蒽[2,3- b ]噻吩和蒽[2,3- b ]硒吩。
Organic semiconductor material
申请人:Tokyo Institute of Technology
公开号:US10937964B2
公开(公告)日:2021-03-02
The purpose of the present invention is to provide an organic semiconductor material having liquid crystallinity and high electron mobility. The present invention is an organic semiconductor material having at least a charge-transporting molecular unit (A) having a structure of an aromatic fused ring system and a cyclic structural unit (B) bonded to the aforementioned unit via a single bond, wherein the unit (A) and/or the unit (B) has a side chain composed of a unit (C), and wherein the organic semiconductor material exhibits a liquid crystal phase that is different from an N-phase, an SmA-phase or an SmC-phase.
High-Performance Organic Semiconductors: Asymmetric Linear Acenes Containing Sulphur
作者:Ming L. Tang、Toshihiro Okamoto、Zhenan Bao
DOI:10.1021/ja066824j
日期:2006.12.1
Two new linear acenes with fused thiophene units have been synthesized. These acenes have conjugation lengths between anthracene and pentacene. Thin films of these linear molecules were characterized by ultraviolet spectroscopy, X-ray diffraction, atomic force microscopy (AFM), and field-effect transistor measurements. Submonolayer AFM studies show growth that greatly resembles pentacene, while thin-film growth is dendritic. Mobilites as high as 0.47 cm2 V-1 s-1 have been found for the tetraceno[2,3-b]thiophene and are as high as 0.15 cm2 V-1 s-1 for anthra[2,3-b]thiophene.