So-Ha Lee Ibrahim Mustafa El-Deeb 2024-01-20T22:35:25Z 2024-01-20T22:35:25Z 2021-09-06 2008-09 1225-9098 https://pubs.kist.re.kr/handle/201004/133172 Although the pyrimidine derivatives were obtained in low yields ranging from 8% to 20%, we reported the successful preparation of N,N-diaryl-pyrimidin-2-amine derivatives starting from the corresponding 2-aminopyrimidines (1a-1c), by direct palladium-catalyzed arylation using different arylbromides. The reasons of low yields are thought to be the electronic and steric effects by the neighboring aromatic systems. The absorption spectra and photoluminescent spectra of compounds (3a 3g and 4a-4c) were measured using dichloromethane on the concentration of 25 mM by UV vis spectroscopy and luminescent spectroscopy. Pyrimidine derivatives 4a, 4b, and 4c showed moderate emission maxima at 474 nm, 481 nm, and 367 nm, respectively, while other compounds showed very weak photoluminescence or no photoluminescence at all. English 한국응용과학기술학회 Synthesis of N,N-Diaryl-(pyridin-3-yl)pyrimidin-2-amine Derivatives and Their Photochemical Properties Article 2 한국응용과학기술학회지, v.25, no.3, pp.291 - 298 한국응용과학기술학회지 25 3 291 298 kci ART001279147 Palladium catalyst N N-diarylation 2-aminopyrimidine phosphine ligand