NOVEL ORGANIC HETEROCYCLIC COMPOUND AND LIGHT-EMITTING DEVICE COMPRISING SAME
申请人:SFC CO., LTD.
公开号:US20180072753A1
公开(公告)日:2018-03-15
The present invention relates to an organic light-emitting compound represented by [Chemical Formula A] and an organic light-emitting device. In Chemical Formula, A, X, Y, Z, and the substituents R
1
to R
8
, and R
11
to R
20
are as defined in the specification.
operationally simple method for the regioselective synthesis of 2-aryl-substituted 2H-indazoles is reported. The Pd-catalyzed reaction between easily available 2-bromobenzyl bromides and arylhydrazines employing Cs2CO3 as the base and t-Bu3PHBF4 as the ligand in DMSO at 120 °C in a sealed tube delivers the 2-substituted-2H-indazoles in a single synthetic step with yields up to 79%. The newmethod is based on
报道了直接和操作简单的方法用于区域选择性合成2-芳基取代的2 H-吲唑。容易获得的2-溴苄基溴化物和芳基肼采用铯之间的Pd-催化反应2 CO 3作为碱和吨-Bu 3 PHBF 4作为在密封管中120℃下在DMSO中配体递送2-取代- 2 ħ -吲唑在单个合成步骤中的收率高达79%。该新方法基于区域选择性的分子间N-苄基化,然后进行分子内N-芳基化和氧化。
Microwave-Assisted Molybdenum-Catalyzed Reductive Cyclization of o-Nitrobenzylidene Amines to 2-Aryl-2H-indazoles
The reductive cyclization of o-nitrobenzylidene amines under microwave conditions employing MoO2Cl2(dmf)(2) as catalyst and Ph3P as reducing agent delivers 2-aryl-2H-indazoles with yields ranging from 61-92%.
10.3998/ark.5550190.0018.400
作者:Espinosa-Bustos, Christian、Villegas, Alondra、Salas, Cristian O.
DOI:10.3998/ark.5550190.0018.400
日期:——
Mo(VI)-catalyzed Synthesis of 2-Aryl-2<i>H</i>-indazoles Using Pinacol Mediated Deoxygenation of Nitroaromatics
作者:Dhananjaya Kaldhi、Raghuram Gujjarappa、Nagaraju Vodnala、Arup K. Kabi、Nayyef Aljaar、Chandi C. Malakar
DOI:10.1246/cl.190490
日期:2019.10.5
A molybdenum(VI)-catalyzed protocol for the synthesis of 2-aryl-2H-indazoles using pinacol as a reducing agent under neat reaction conditions has been demonstrated. The developed method gives an easy access to a wide range of 2-aryl-2H-indazoles in excellent yields. The present strategy excludes the use of P(III)-reagents as deoxygenating agents.