Selective Mechanochemical Monoarylation of Unbiased Dibromoarenes by <i>in Situ</i> Crystallization
作者:Tamae Seo、Koji Kubota、Hajime Ito
DOI:10.1021/jacs.0c01739
日期:2020.6.3
Palladium-catalyzed Suzuki-Miyaura cross-coupling reactions of liquid, unbiased dibromoarenes under mechanochemical conditions selectively afford the monoarylated products. The lower reactivity of the crystalline monoarylated products rela-tive to the liquid starting materials should be attributed predom-inantly to the low diffusion efficiency of the former in the re-action mixture, which results in
An Extremely Active and General Catalyst for Suzuki Coupling Reaction of Unreactive Aryl Chlorides
作者:Dong-Hwan Lee、Myung-Jong Jin
DOI:10.1021/ol102677r
日期:2011.1.21
2a acted as a powerful catalyst which allows easy access to the Suzukicouplingreaction of less reactive arylchlorides under mild conditions. A wide range of sterically hindered and deactivated arylchlorides could be efficiently coupled at a low catalyst loading of 0.1 mol %. Furthermore, this catalytic system also proved to be highly effective in one-pot multiple couplings.
Cross-Coupling of ArX with ArMgBr Catalyzed by N-Heterocyclic Carbene-Based Nickel Complexes
作者:Wang-Jun Guo、Zhong-Xia Wang
DOI:10.1021/jo302425x
日期:2013.2.1
N-Heterocyclic carbene-based pincer nickel complexes were synthesized and characterized. These complexes efficiently catalyze cross-coupling of aryl Grignard reagents with aryl chlorides or fluorides under mild conditions.
ORGANIC ELECTROLUMINESCENT DEVICE
申请人:HODOGAYA CHEMICAL CO., LTD.
公开号:US20170358754A1
公开(公告)日:2017-12-14
The organic EL device of the present invention has an anode, a first hole transport layer, a second hole transport layer, a luminous layer, an electron transport layer, and a cathode in the order of description. The second hole transport layer includes an arylamine derivative represented by the following general formula (1):
and the electron transport layer includes a pyrimidine compound represented by the following general formula (2):
ORGANIC ELECTROLUMINESCENCE DEVICE
申请人:HODOGAYA CHEMICAL CO., LTD.
公开号:US20180212153A1
公开(公告)日:2018-07-26
According to the present invention, there is provided an organic electroluminescent device which has an anode, a hole transport layer, a luminous layer, an electron transport layer, and a cathode arranged in order of description. The device is characterized in that: the hole transport layer includes a specific arylamine compound, and that the luminous layer includes a specific indenoindole derivative or a specific carbazole derivative. The organic EL device of the present invention has improved efficiency of hole transport from the hole transport layer to the luminous layer and also improved efficiency of electron transport from the electron transport layer to the luminous layer, in comparison to conventional organic EL devices.