Journal ArticleDOI
A 1H, 13C and 15N NMR spectroscopic and GIAO DFT study of ethyl 5-oxo-2-phenyl-4-(2-phenylhydrazono)-4,5-dihydro-1H-pyrrole-3-carboxylate
TLDR
In this paper, a tautomeric hydrazone mixture was obtained as a mixture of E and Z isomers according to n J (15 N, 13 C), and a comparison of the 1 H NMR data with GIAO DFT calculations enabled determination of the configuration of the carboxy ester group in both isomers.About:
This article is published in Tetrahedron Letters.The article was published on 2010-06-09. It has received 20 citations till now. The article focuses on the topics: Carboxylate & Proton NMR.read more
Citations
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Journal ArticleDOI
Computational Prediction of 1H and 13C Chemical Shifts: A Useful Tool for Natural Product, Mechanistic, and Synthetic Organic Chemistry
Journal ArticleDOI
Tuning Solvatochromism of Azo Dyes with Intramolecular Hydrogen Bonding in Solution and on Titanium Dioxide Nanoparticles
TL;DR: In this article, the authors proposed that intramolecular hydrogen bonding alone plays the leading role in such phenomena, which is fundamentally different to other mechanisms, such as tautomerism and cis-trans isomerization, that explain the optical control of azo dyes.
Journal ArticleDOI
Dual functional colorimetric and turn-off fluorescence probe based on pyrrolinone ester hydrazone dye derivative for Cu2+ monitoring and pH change
TL;DR: In this paper, a dual function colorimetric chemosensor and turn-off fluorescent probe based on pyrrolinone esters hydrazone dye bearing a terminal thiophene moiety (TPESHD) was designed, synthesized and investigated.
Journal ArticleDOI
Synthesis, absorption and fluorescence of hydrazone colorants based on pyrrolinone esters
TL;DR: In this paper, azo dyes were prepared by diazotization of a series of electronically different para substituted anilines and subsequent azo coupling of these diazonium salts with ethyl 4,5-dihydro-5-oxo-2-aryl(1H)pyrrole-3-carboxylate as a coupling component.
Journal ArticleDOI
Synthesis, spectral study and application of solid state fluorescent reactive disperse dyes and their antibacterial activity
Tarek Aysha,Mervat El-Sedik,Saadia Abd El Megied,Hassan M. Ibrahim,Yehya Youssef,Radim Hrdina +5 more
TL;DR: In this article, new solid state hydrazone fluorescent reactive disperse dyes based on pyrrolinone ester and temporarily anionic sulfatoethylsulfone moiety were prepared.
References
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Journal ArticleDOI
15N NMR Spectroscopy in Structural Analysis
Radek Marek,Antonin Lycka +1 more
TL;DR: In this paper, the implementation of both the directly and inverse-detected 15N NMR techniques at the natural abundance level of the 15N isotope is demonstrated for a diverse array of structural problems in organic chemistry.
Journal ArticleDOI
The synthesis and properties of 1,4‐diketo‐pyrrolo[3,4‐C]pyrroles
Abul Dr. Iqbal,Max Jost,R. Kirchmayr,Johannes Pfenninger,Alain Claude Dr. Rochat,Olof Dr. Wallquist +5 more
TL;DR: In this article, the synthesis and mechanistic aspects of 1,4-Diketopyrrolo[3,4c]pyrroles (DPP) are discussed.
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15N NMR Spectroscopy in Structural Analysis: An Update(2001-2005)
TL;DR: A comprehensive review of 15N NMR applications can be found in this paper, where 15N solid-state studies are summarized in various fields of chemistry, including tautomerism, complexation, protonation, and hydrogen bonding.
Journal ArticleDOI
The synthesis, absorption and fluorescence of polar diketo-pyrrolo-pyrroles
TL;DR: The effect of electron-donor (piperidino) and electron-acceptor (cyano) groups on the absorption maxima of some diketo-pyrrolo-polypyrroles in DMSO solution was investigated both experimentally and theoretically as discussed by the authors.