Formation of gold-like metal-lustrous inclusion crystals from 1-phenyl-2,5-bis[5-(tricyanoethenyl)-2-thienyl]pyrrole host and an electron-donating aromatic guest
1-Aryl-2,5-di(2-thienyl)pyrroles and their oligomers have been synthesized as a new pi-system. UV-vis absorption spectra, X-ray crystallographic analysis, and cyclic voltammogram showed that the present pi-system showed good co-planarity and high ability to donate its pi-electron. (C) 1999 Elsevier Science Ltd. All rights reserved.
Copper(II)-Promoted, One-Pot Conversion of 1-Alkynes with Anhydrides or Primary Amines to the Respective 2,5-Disubstituted Furans or Pyrroles under Microwave Irradiation Conditions
作者:Hyejeong Lee、Yeonhui Yi、Chul-Ho Jun
DOI:10.1002/adsc.201500711
日期:2015.11.16
Furans and pyrroles are prepared from 1-alkynes by using a Cu(II)-promoted, one-pot, microwaveirradiation method. Glaser coupling of 1-alkynes and cyclization of the resulting 1,3-diyne in the presence of an anhydride or a primaryamine results in the formation of the respective 2,5-diaryl- or 2,5-dialkyl-substituted furans and pyrroles.
<i>N</i>-Substituted pyrrole synthesis by Paal-Knorr condensation using recyclable cationic exchange resin in water
作者:Yan-Hong He、Gang-Qiang Wang、Zhi Guan
DOI:10.1002/jhet.317
日期:——
Cationicexchangeresin has been utilized for the first time as a novel and recyclable heterogeneous catalyst for the synthesis of N‐substituted pyrroles from variety of 1,4‐diketones and aniline. This simple synthesis has been accomplished with excellent yields. The recovered catalyst can be reused for subsequent runs with only a gradual decrease in activity. J. Heterocyclic Chem., (2010).
1-butyl-3-methyl-imidazolium hydrogen sulfate, [bmim]HSO4, was used as a catalyst and reaction medium for the pyrrolesynthesis, and a wide range of aliphatic, aromatic, heteroaromatic and carboxylic 1,4-diketones easily underwent condensations with aniline and ethylenediamine to form polysubstituted pyrroles. Sequential decarboxylation/Paal-Knorrpyrrolecondensation was observed, which provides a new
Strong π-delocalization and substitution effect on electronic properties of dithienylpyrrole-containing bipyridine ligands and corresponding ruthenium complexes
作者:Sajida Noureen、Stefano Caramori、Antonio Monari、Xavier Assfeld、Roberto Argazzi、Carlo A. Bignozzi、Marc Beley、Philippe C. Gros
DOI:10.1039/c2dt12367c
日期:——
The first dithienylpyrrole (DTP)-based bipyridine ligands has been prepared and coordinated with ruthenium to give the corresponding homoleptic complexes. Bipyridine was bound at pyrrole (DTP1) or thiophene (DTP2) ring. A strong bathochromic effect was obtained by switching from pyrrole to thiophene for ligands and complexes. Interestingly the DTP2 series offered a wide absorption window from UV to visible domain with an almost constant absorbance. These effects are due to a larger extent of delocalization as supported by DFT calculations and photophysical measurements.
1-substituted 2,5-dithienyl pyrrole derivatives and film-forming materials
申请人:Chiba University
公开号:US06335452B2
公开(公告)日:2002-01-01
A 1-substituted 2,5-dithienylpyrrole derivative having the following formula (I).
in which R is hydrogen, a substituted or non-substituted alkyl group, or a substituted or non-substituted aromatic group, Y is hydrogen or cyano group, it can be involved the case that one of Ys may be hydrogen and the other may be cyano group, and n is an integer of 1 to 3. The derivative is used for forming films.