disclosed. 2,5-Disubstituted pyrroles were selectively obtained in high yield with aryl alkynes and aliphatic alkynes, whereas 2,3,4-trisubstituted pyrroles were formed with silylated alkynes. This switchable method provides a controllable and facile access to both multisubstituted pyrrole scaffolds with high efficiency, excellent regioselectivity, and good functionalgroup compatibility.
Electrochemical synthesis of copper(<scp>i</scp>) acetylides <i>via</i> simultaneous copper ion and catalytic base electrogeneration for use in click chemistry
作者:Peter W. Seavill、Katherine B. Holt、Jonathan D. Wilden
DOI:10.1039/c9ra06782e
日期:——
We report an efficient and sustainable electrochemical synthesis of copper(I) acetylides using simultaneous copper oxidation and Hofmann elimination of quaternary ammonium salts. The electrochemically-generated base was also regenerated electrochemically, making it catalytic. A ‘Click test’ (CuAAC reaction) was performed to assess product purity and an electrochemically-promoted, one-pot CuAAC reaction
我们报告了一种高效且可持续的铜 ( I ) 乙炔化物电化学合成方法,该方法使用同时铜氧化和 Hofmann 消除季铵盐。电化学生成的碱也被电化学再生,使其具有催化作用。进行了“点击测试”(CuAAC 反应)以评估产品纯度,并进行了电化学促进的一锅法 CuAAC 反应,这是该方法在药物相关反应中的初步示范。
Tuning the electronic properties of thiophene-annulated NDIs: the influence of the lateral fusion position
We report a new asymmetric thiophene-annulated naphthalenediimide with high electron mobilities.
我们报告了一种具有高电子迁移率的新的对称噻吩-环戊二酰亚胺。
Trifluoromethyl- and Fluoroalkylselenolations of Alkynyl Copper(I) Compounds
作者:Clément Ghiazza、Thierry Billard、Anis Tlili
DOI:10.1002/chem.201702028
日期:2017.7.26
The successful perfluoroalkylselenolation of alkynyl copper(I) compounds is described herein. The reaction occurs under oxidant free conditions at room temperature. This convenient one‐pot procedure is based on the in situ generation of trifluoromethylselenyl chlorides. The developed system shows high functional group tolerance and also promotes the employment of fluoroalkyl derivatives.
1,2-sulfur migration for the synthesis of syn/anti-oligothienoacene diimides, is present. The resulting oligomers show significant potential for organic electronic devices with the electron mobility up to 4.2 cm2 V−1 s−1.
存在一种简便直接的合成策略,该策略结合了钯催化的 C-H 活化和意想不到的 1,2-硫迁移,用于合成顺/反低聚噻吩二亚胺。所得低聚物显示出用于电子迁移率高达 4.2 cm 2 V -1 s -1 的有机电子器件的巨大潜力。