70031-86-6Relevant academic research and scientific papers
Solid state thiazole-based fluorophores: Promising materials for white organic light emitting devices
Chellappa Subramanyam, Dwaraka Viswanath,Divi, Haranath,Godugu, Kumar,Gundala, Trivikram Reddy,Loka, Subramanyam Sarma,Mohinuddin Pinjari, Mohammad Khaja,Reddy Nallagondu, Chinna Gangi,Shaik, Sultana,Vemula, Venkatramu
, (2021/01/07)
A facile and more efficient solvent-free mechanochemical synthetic route has been developed for the synthesis of a series of solid state white light emissive thiazole-based donor-acceptor (D-A) type fluorophores, 2-(3-pyridyl)/2-aminothiazoles from ω-bromomethylketones and pyridine-3-carbothioamide/thiourea in the presence of silica-supported HClO4 as a reusable solid Br?nsted acid catalyst at RT. The photophysical and electrochemical properties of these compounds have been derived. Most of the studied D-A type solid thiazole-based fluorophores emitted white light and it can be tuned from warm - ideal - cold white light by introduction of a variety of substituents at 4th position of 2-(3-pyridyl)/2-aminothiazoles. Further, HOMO and LUMO energy levels of the titled compounds are found to be in the range ?5.52 eV to ?5.72 eV and ?1.84 eV to ?2.45 eV, respectively. The lifetimes of these levels of thiazole-based fluorophores have been determined through luminescence decay curves and are found to be in the range of 7.7–11 μs. The photophysical and electrochemical properties of the synthesized thiazole-based fluorophores indicate that the compounds could be promising materials for white organic light emitting devices.
One pot synthesis of substituted imidazopyridines and thiazoles from styrenes in water assisted by NBS
Shinde, Mahesh H.,Kshirsagar, Umesh A.
, p. 1455 - 1458 (2016/04/04)
Heating of commercially available styrenes with NBS in water followed by reaction with 2-aminopyridines or thioamides afforded important heterocyclic scaffolds in a one pot procedure. The reaction proceeds via co-oxidant free, in situ formation of α-bromoketone using NBS as a bromine source as well as an oxidant followed by trapping with suitable nucleophiles to provide imidazopyridines and thiazoles.
Direct preparation of thiazoles, imidazoles, imidazopyridines and thiazolidines from alkenes
Donohoe, Timothy J.,Kabeshov, Mikhail A.,Rathi, Akshat H.,Smith, Ian E. D.
, p. 1093 - 1101 (2012/04/04)
A range of heterocycles, namely thiazoles, imidazoles, imidazopyridines, thiazolidines and dimethoxyindoles, have been synthesised directly from alkenes via a two-step ketoidoination/cyclisation protocol. The alkene starting materials are themselves readily accessible using many different and well-established approaches, and allow access to a variety of heterocycles with excellent yields and regioselectivity.
Direct preparation of heteroaromatic compounds from alkenes
Donohoe, Timothy J.,Kabeshov, Mikhail A.,Rathi, Akshat H.,Smith, Ian E. D.
supporting information; experimental part, p. 2956 - 2958 (2011/02/26)
A series of aromatic heterocycles, thiazoles, imidazoles, and dimethoxyindoles, can be synthesised directly from alkenes via a ketoiodination-cyclisation protocol. The alkene starting materials are themselves easily accessible by many different and well-established approaches, and allow access to various aromatic heterocycles with excellent yields and regioselectivity. Georg Thieme Verlag Stuttgart - New York.
