2385-23-1Relevant articles and documents
(E)-2-(hydroxystyryl)-3-phenylquinazolin-4(3H)-ones: Synthesis, photochemical and luminescent properties
Kim, Grigory A.,Ovchinnikova, Irina G.,Nosova, Emiliya V.,Rusinov, Gennady L.,Charushina, Valery N.
, p. 266 - 277 (2018)
The new (E)-2-(hydroxyarilethenyl)-3-phenylquinazolin-4(3H)-ones with various substituents in phenyl fragment were synthesized. The effect of electron donor and acceptor substituents (±M) in quinazolinones on luminescence intensity and dual emission in 55
Development of novel Schiff base fluorophores for selective detection of Cu2+ ions in seawater using test strips
El-Sakka, Sahar S.,El-Shalakany, E.,Kamel, Rasha M.,Soliman, M. H. A.
, (2022/01/26)
A novel Schiff bases of 2-((2-aminophenylimino)methyl)-3-phenyl-4(3H)-quinazolinone (3a), 2-((2-aminophenylimino)methyl)-3-(4-tolyl)-4(3H)-quinazolinone (3b), and 2-((2-aminophenylimino)methyl)-3-(4-anisyl)-4(3H)-quinazolinone (3c) were synthesized and ch
Metal-free C-H methylation and acetylation of heteroarenes with PEG-400
Kudale, Vishal Suresh,Wang, Jeh-Jeng
supporting information, p. 3506 - 3511 (2020/06/25)
The generation of a methyl carbon source from renewable and cheap sources is challenging. Herein, we describe a novel and an efficient route for methylation and acetylation of aza-heteroarenes using PEG-400 under O2and TsOH·H2O for the first time by tuning the reaction conditions using a different set of starting materials. The key features of the current protocol are oxidative C-O and C-C bond scission under metal-free conditions with good functional group tolerance, and a broad substrate scope. The potential applicability of the designed methodology was demonstrated for the synthesis of central nervous system (CNS) depressant and anticonvulsant drug molecules by a one-pot strategy.
Screening of natural deep eutectic solvents for green synthesis of 2-methyl-3-substituted quinazolinones and microwave-assisted synthesis of 3-aryl quinazolinones in ethanol
Komar, Mario,Konjarevi?, Anastazija,Molnar, Maja
, (2020/07/13)
In this study, two fast and efficient protocols for green synthesis of 3-substituted quinazolinones were perfomed. A synthesis of 2-methyl-3-substituted quinazolinones was performed in natural deep eutectic solvents, while 3-aryl quinazolinones were obtained by using microwave assisted synthesis. Benzoxazinone, which was used as an intermediate in the synthesis of 2-methyl-3-substituted quinazolinones, was prepared conventionally from anthranilic acid and acetic anhydride. In order to find the most appropriate synthetic path, twenty natural deep eutectic solvents were applied as a solvent in these syntheses. Choline chloride:urea (1: 2) was found to be the most efficient solvent and was further used in the synthesis of 2-methyl quinazolinone derivatives (2–12). 3-Aryl quinazolinones (13–17), on the other hand, were synthesized in one-pot microwave-assisted reaction of anthranilic acid, different amines and trimethyl orthoformate. All compounds were synthesized in good to excellent yields, characterized by LC-MS/MS spectrometry and 1H- and 13C-NMR spectroscopy.