53620-43-2Relevant academic research and scientific papers
Rh-Catalyzed Annulation of ortho-C?H Bonds of 2-Arylimidazoles with 1,4,2-Dioxazol-5-ones toward 5-Arylimidazo[1,2-c]quinazolines
Wu, Xiaopeng,Sun, Song,Xu, Shengbo,Cheng, Jiang
, p. 1111 - 1115 (2018)
A Rh-catalyzed unique and direct approach for constructing a series of 5-arylimidazo[1,2-c]quinazolines in moderate to excellent yields from simple and readily available 2-arylimidazoles and 3-phenyl-1,4,2-dioxazol-5-ones was described. This procedure pro
IRIDIUM COMPLEX COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
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, (2018/06/09)
The present invention relates to an iridium complex compound and an organic electroluminescent device using the same. More specifically, the present invention relates to an iridium complex compound securing low driving voltage as well as excellent color purity, luminescent properties, luminescent efficiency, and lifespan properties when used as a dopant in light-emitting layers of organic electroluminescent devices by producing the novel compound which is a complex having iridium as central metal. The present invention further relates to a method for efficiently synthesizing the same, and an organic electroluminescent device using the same.(01) Substrate(02) Positive electrode(03) Negative electrode(04) Hole injection layer(05) Hole transporting layer(06) Light-emitting layer(07) Electron transporting layer(08) Electron injection layerCOPYRIGHT KIPO 2018
An expedient synthesis of 5-substituted imidazo[1,2-c]quinazolines
Korshin, Edward E.,Sabirova, Leila A.,Levin, Yakov A.
, p. 3512 - 3522 (2013/01/15)
An efficient three-step synthesis of 5-substituted 2,3-dihydroimidazo[1,2- c]quinazolines and imidazo[1,2-c]quinazolines was elaborated. 2-(2-Aminophenyl)-4,5-dihydro-1H-imidazole, prepared by phosphorus pentasulfide catalyzed condensation of 2-aminobenzonitrile with ethylenediamine, smoothly reacted with aldehydes to give the corresponding 2,3,5,6-tetrahydroimidazo[1,2- c]quinazolines. The CH-NH fragments of the latter were subjected to selective oxidative dehydrogenation with one equivalent of potassium permanganate on silica gel to give 2,3-dihydroimidazo[1,2-c]quinazolines. With two equivalents of potassium permanganate on silica gel, a one-pot exhaustive dehydrogenation to imidazo[1,2-c]quinazolines was accomplished. Georg Thieme Verlag KG · Stuttgart · New York.
REACTIVITY OF PHENYLLITHIUM TOWARD BRIDGEHEAD NITROGEN HETEROCYCLES
Gueiffier, Alain,Viols, Henri,Blache, Ives,Chavignon, Olivier,Teulade, Jean Claude,et al.
, p. 551 - 558 (2007/10/02)
The reactivity of phenyllithium toward some bridgehead nitrogen heterocycles was investigated.Imidazopyridine gave the substitution, while other series gave addition reactions.In addition, the ring opening derivative was obtained in imidazoquinazoline series.
