Novel bio-based core-shell organic-inorganic nanohybrid from embedding aspartic acid-guanine ionic liquid on the hydroxylated nano silica surface (nano [(Asp-Gua) IL@PEG-SiO2]): A versatile nanostructure for the synthesis of bis(2,3-dihydroquinazolin-4(1H)-one) derivatives and tricarboxamides under green media
作者:Kobra Nikoofar、Fatemeh Shahriyari
DOI:10.1016/j.poly.2020.114361
日期:2020.3
3-dihydroquinazolin-4(1H)-one) derivatives via one-pot pseudo five-component reaction of aldehydes, amines, and isatoic anhydride in 70 °C aqueous media. The protocol contains several advantages such as relatively short reaction times, simple work-up procedure, economic and environmentally-friend because of performing the two class of MCRs under green media, utilizing wide-range of substrates, and reusability and recoverability
The present invention relates to mixtures comprising at least one phosphorescent dopant and at least one compound of one of the formulae (1) and (2), and the use thereof in electronic devices, especially in organic electroluminescent devices.
MATERIALIEN FÜR ORGANISCHE ELEKTROLUMINESZENZVORRICHTUNGEN
申请人:Merck Patent GmbH
公开号:EP3197982B1
公开(公告)日:2020-05-06
[DE] MATERIALIEN FÜR ORGANISCHE ELEKTROLUMINESZENZVORRICHTUNGEN<br/>[EN] MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES<br/>[FR] MATIÈRES POUR DISPOSITIFS ÉLECTROLUMINESCENTS ORGANIQUES
申请人:MERCK PATENT GMBH
公开号:WO2016045765A1
公开(公告)日:2016-03-31
Die vorliegende Erfindung betrifft Mischungen umfassend mindestens einen phosphoreszierenden Dotanden und mindestens eine Verbindung gemäß einer der Formeln (1) oder (2), und deren Verwendung in elektronischen Vorrichtungen, insbesondere in organischen Elektrolumineszenzvorrichtungen.
CuO nanoparticles catalyzed simple and efficient synthesis of 2,3-dihydroquinazolin-4(1H)-ones and quinazolin-4(3H)-ones under ultrasound irradiation in aqueous ethanol under ultrasound irradiation in aqueous ethanol
A CuO nanoparticle-catalyzed one-pot process has engineered for the preparation of diverse quinazolinones from the readily available isatoic anhydride, aldehydes and amine or ammonium. For amine substrates the reactions afford 2,3-dihydroquinazolin-4(1H)-ones in aqueous ethanol promoted by ultrasound irradiation. However, the ammonium substrates undergo intramolecular electron transfer and rearrangement