Regiocontrolled synthesis of 2,4,6-triarylpyridines from methyl ketones, electron-deficient acetylenes and ammonium acetate
作者:Dmitrii A. Shabalin、Marina Yu. Dvorko、Elena Yu. Schmidt、Boris A. Trofimov
DOI:10.1039/d1ob00193k
日期:——
A novel one-pot two-step approach for the synthesis of 2,4,6-triarylpyridines via t-BuOK/DMSO-promoted C-vinylation of a variety of methyl ketones with electron-deficient acetylenes (alkynones) followed by a cyclization of the in situ generated unsaturated 1,5-dicarbonyl species with ammonium acetate has been developed. This approach possesses competitive advantages such as high regioselectivity, available
Synthesis of Highly Substituted Pyridines through Copper-Catalyzed Condensation of Oximes and α,β-Unsaturated Imines
作者:Wei Wen Tan、Yew Jin Ong、Naohiko Yoshikai
DOI:10.1002/anie.201704378
日期:2017.7.3
A copper-catalyzed condensation reaction of oxime acetates and α,β-unsaturated ketimines to give pyridine derivatives is reported. The reaction features mild conditions, high functional-group compatibility, and high regioselectivity with respect to unsymmetrical oxime acetates, thus allowing the preparation of a wide range of polysubstituted pyridines, many of which are not readily accessible by conventional
An efficient method for the synthesis of 2,4,6-triaryl-pyridinesvia microwave-promoted and BF 3 ˙OEt 2 -catalysedone-pot reaction of ω-pyrrolidinoacetophenone with chalconeis reported. This method illustrates urea as an environmentallybenign source of ammonia for the synthesis of 2,4,6-triarylpyridines.
[EN] NEW ELECTRON TRANSPORT MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME<br/>[FR] NOUVEAU MATÉRIAU DE TRANSPORT D'ÉLECTRONS ET DISPOSITIF ORGANIQUE ÉLECTROLUMINESCENT L'UTILISANT
申请人:ALPHA CHEM CO LTD
公开号:WO2013180376A1
公开(公告)日:2013-12-05
Provided are a new electron transport material and an organic electroluminescent device including the same. The electron transport material according to the present invention may have the excellent luminescence property and reduce the driving voltage to increase the power efficiency, such that the organic electroluminescent device using less consumption power may be manufactured.