76469-33-5Relevant articles and documents
OLED electron transport material as well as preparation method and application thereof (by machine translation)
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Paragraph 0072-0075, (2020/06/17)
The invention belongs to the technical field of organic electronic transmission materials, and relates to OLED electron transport materials as well as a preparation method and application thereof. OLED (Organic Light Emitting Diode) electron transport material in particular relates to a small molecule OLED material with an asymmetric structure containing a benzoxazole group on one side and an aryl group with electron transport performance at one side. As the electron transport material is applied to OLED devices, good device performance and lower driving voltage can be obtained; meanwhile, the luminous efficiency and the service life of the device are greatly improved. (by machine translation)
Asymmetric transfer hydrogenation of 1-naphthyl ketones by an ansa-Ru(II) complex of a DPEN-SO2N(Me)-(CH2)2(η 6-p-tol) combined ligand
Kisic, Andrea,Stephan, Michel,Mohar, Barbara
supporting information, p. 1614 - 1617 (2013/06/26)
The first second-generation designer Ru(II) catalyst 1b featuring an enantiopure N,C-(N-ethylene-N-methyl-sulfamoyl)-tethered (DPEN- κ2N,N′)/η6-toluene hybrid ligand is introduced. Using an S/C = 1000 in HCO2H-Et3N 5:2 transfer hydrogenation medium, secondary 1-naphthyl alcohols are obtained in up to >99.9% ee under mild conditions. Mechanistic factors are discussed.
Synthetic Studies on Indoles and Related Compounds. XV. An Unusual Acylation of Ethyl Indole-2-Carboxylate in the Friedel-Crafts Acylation
Murakami, Yasuoki,Tani, Masanobu,Tanaka, Kenjiro,Yokoyama, Yuusaku
, p. 2023 - 2035 (2007/10/02)
The Friedel-Crafts reaction of ethyl indole-2-carboxylate (1a) with acyl chlorides or acid anhydrides in the presence of Lewis acids was investigated in order to establish a preparative procedure for the corresponding ethyl 3-acylindole-2-carboxylates (4).Although monoacylation occured successfully, the products were generally a mixture of ethyl 3-, 5-, and 7-acylindole-2-carboxylates (4,5 and 6).The ratio of the yields of these three products varied greatly depending on reaction conditions and reagents used.A tendency that the 3-acylindole (4) was obtained as a main product was observed when a Lewis acid other than aluminum chloride was used as a catalyst and/or an acyl chloride derived from a weaker acid was employed, whereas a tendency for formation of the 5- and 7-acylindoles (5 and 6) was observed when aluminum chloride and/or an acyl chloride derived from a stronger acid was used.As to the 5- and 7-acylindoles (5 and 6) , the yields of the former were always much higher than those of the latter (6).The result indicates that ethyl 3- and 5-acylindole-2-carboxylates can be regioselectively prepared from a common substrate (1a) by changing the reaction conditions or reagents. friedel-craft acylation; ethyl indole-2-carboxylate; acyl chloride; acid anhydride; lewis acid; aluminum chloride; acylindole