ORGANOMETALLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
申请人:Samsung Display Co., Ltd.
公开号:US20190036042A1
公开(公告)日:2019-01-31
An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes an emission layer. The emission layer may including an organometallic compound represented by Formula 1 as a dopant:
Synthesis of Dibenzosuberones Bearing an Isoxazole Group via Palladium-Catalyzed Intramolecular C–H/C–Br Bond Cross-Coupling of Ortho-Aroylated 3,5-Diarylisoxazoles
bearing an isoxazole group in 24 to >99% 1H NMR yields. The dibenzosuberone structure was further confirmed by X-ray crystallography. The developed methodology exhibits very good functional group tolerance. In addition, a rational mechanism was presented for describing the reaction process. For the prepared dibenzosuberone, the use of Mo(CO)6 as the catalyst can easily transform the isoxazolering into the
synthesized in moderate to excellent yields from (E/Z)-alkynyl-O-methyl oximes via chlorinative cyclization. The synthesis employs the combination of N-chlorosuccinimide (NCS) and chlorotrimethylsilane (TMSCl) in nitromethane solvent where chlorine (Cl2) and hydrochloric acid (HCl) are generated in situ. In addition, the current protocol is applicable to the synthesis of 4-bromo- and 4-iodoisoxazoles when
Copper-catalyzed aerobic oxidative C–O bond formation for the synthesis of 3,5-disubstituted isoxazoles from enone oximes
作者:Yadong Sun、Ablimit Abdukader、Haiyan Zhang、Wanle Yang、Chenjiang Liu
DOI:10.1039/c7ra11436b
日期:——
oxidative coupling reaction of enone oximes using a catalytic quantity of Cu(OAc)2. This method features an inexpensive metal catalyst, molecular oxygen as a green oxidant, good functional group tolerance and readily available starting materials. This attractive method for the synthesis of isoxazole derivatives is of great significance due to the product's versatile reactivity for further transformations.
Reactivity of 2-Halo-2H-azirines. Part II. Thermal Ring Expansion Reactions: Synthesis of 4-Haloisoxazoles
作者:Teresa M. V. D. Pinho e Melo、Cláudia S. J. Lopes、António M. d’A. Rocha Gonsalves、Richard C. Storr
DOI:10.1055/s-2002-23542
日期:——
The thermolysis of haloazidoalkenes and 2-halo-2H-azirines is described. 2-Benzoyl-2-halo-2H-azirine-3-carboxylates (2a and 2b) underwent ringexpansion leading to the synthesis of new 4-haloisoxazoles in high yield. The same isoxazoles were also obtained in high yield directly from haloazidoalkenes (la and 1b). The thermolysis of the β-azido-α,β-unsaturated ketone 1e led to complete conversion to