92795-23-8Relevant articles and documents
Novel organic compounds for organic light-emitting diode and organic light-emitting diode including the same
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Paragraph 0644-0649, (2021/02/19)
The present invention relates to an organic electroluminescent compound represented by chemical formula A and an organic light emitting device comprising the same. Substituents A_1 to A_4, R_1 to R_18, L_1, L_2, X, Y, m, n, s, p, and q are the same as defined in the detailed description of the invention.
Regiospecific synthesis of novel cyclic nitrostyrenes and 3-substituted 2-nitronaphthalenes
Keene, Craig,Kuerti, Laszlo
supporting information, p. 1719 - 1729 (2013/07/26)
A two-step, practical, regiospecific, and readily scalable benzannulation protocol for the preparation of novel 3-alkyl- and 3-aryl-substituted 2-nitronaphthalenes is disclosed. Addition of a β-nitrostyrene or nitroalkene to a solution of freshly prepared lithiated o-tolualdehyde tert-butyl imine first leads to the formation of a nitronate, via rapid 1,4-addition, then an intramolecular aza-Henry reaction takes place to afford a six-membered carbocycle. Subsequent treatment of the reaction mixture with aqueous acid affords novel substituted cyclic nitrostyrenes that can be conveniently aromatized via a one-pot radical-induced bromination and elimination sequence to furnish the corresponding 3-alkyl- or 3-aryl-2-nitronaphthalenes in excellent yields. The straightforward syntheses of 2-aminonaphthalenes, substituted BINAMs, 2-naphthols as well as tricyclic fused 1,2,3-triazoles are also described. Georg Thieme Verlag Stuttgart. New York.