This invention relates to a novel electronic transport material and an organic light-emitting device including the same. By using the electronic transport material according to the present invention, it is possible to manufacture an organic light-emitting device with improved luminous characteristics and enhanced driving voltage, thereby inducing an increase in power efficiency and producing an organic light-emitting device with improved power consumption.
With a tandem DMAP-catalyzed reaction between o-AQM, in which it is generated in situ from propargylic amine, and acyl carbene surrogate (from pyridinium ylide), a variety of polyarylated chromenes are assembled in good yields. This process does not require transition-metal catalyst and exhibits easy manipulation of the arene group and good functional group compatibility, particularly the −Br group
An efficient and one-step synthesis of indolizine-1-carbaldehydes from phenylpropiolaldehyde and pyridiniumylides was developed. The elegant methodology afforded functionalized indolizines with easy operation under mild reaction conditions and with wide substrate scope.
Human α7nicotinicacetylcholinereceptor (nAChR) is a promising therapeutic target for the treatment of schizophrenia accompanied with cognitive impairment. Herein, we report the synthesis and agonistic activities of a series of indolizine derivatives targeting to α7 nAChR. The results show that all synthesized compounds have affinity to α7 nAChR and some give strong agonistic activity, particularly
1,2-Dicarbofunctionalization of Trifluoromethyl Alkenes with Pyridinium Salts via a Cycloaddition/Visible-Light-Enabled Fragmentation Cascade
作者:Shu-Jie Chen、Guo-Shu Chen、Tao Deng、Jia-Hui Li、Zhi-Qing He、Li-Shan Liu、Hai Ren、Yun-Lin Liu
DOI:10.1021/acs.orglett.1c04148
日期:2022.1.21
Although trifluoromethyl alkenes have great synthetic potential, their 1,2-difunctionalization has been a challenge. In this Letter, we disclose the first 1,2-dicarbofunctionalization of trifluoromethyl alkenes with pyridinium salts via a cascade process involving a base-promoted [3 + 2] cycloaddition followed by a visible-light-mediated Norrish-type-II fragmentation. This protocol allows for the formation
Bipiridine derivative and organic electroluminescence element containing the same
申请人:Yamagata Promotional Organization for
Industrial Technology
公开号:EP2275409A1
公开(公告)日:2011-01-19
The present invention provides a new bipyridine derivative which is suitable for an electron transport material of an organic electronics element and which has bipyridyl central rings as a core, and further provides an organic electroluminescence element containing the derivative.
The bipyridine derivative is expressed by the following general formula.
(where A1, A2: represent an aromatic heterocyclic group (except for a carbazolyl group) and an aromatic hydrocarbon group and the aromatic heterocyclic group may be combined; a, b = 1 or 2; Ar1, Ar2: represent a divalent or trivalent aromatic hydrocarbon group which may be substituted by hydrogen atom, an alkyl group, a cycloalkyl group, or an alkoxy group; B1, B2: represent hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, an aromatic hydrocarbon group, or an aromatic heterocyclic group; and ring E1, ring E2: represent a pyridine ring, and may have hydrogen atom, an alkyl group, a cycloalkyl group, or an alkoxy group.), which is used as an electron transport material.