Novel organic electroluminescent compounds and organic electroluminescent device
using the same
申请人:Eum Sung Jin
公开号:US20100033083A1
公开(公告)日:2010-02-11
Provided are novel organic electroluminescent compounds, and organic electroluminescent devices and organic solar cells employing the same. Specifically, the organic electroluminescent compounds according to the invention are characterized in that they are represented by Chemical Formula (1):
wherein, A, B, C and D independently represent CR
5
or N, provided that A, B, C and D cannot represent CR
5
all at the same time.
Since the organic electroluminescent compounds according to the invention have good luminous efficiency and excellent color purity and life property of material, OLED's having very good operation life can be manufactured therefrom.
US8153279B2
申请人:——
公开号:US8153279B2
公开(公告)日:2012-04-10
Synthesis of Aryl(di)azinyl Ketones through Copper- and Iron-catalyzed Oxidation of the Methylene Group of Aryl(di)azinylmethanes
作者:Johan De Houwer、Kourosch Abbaspour Tehrani、Bert U. W. Maes
DOI:10.1002/anie.201108540
日期:2012.3.12
Sustainable Oxidations: An oxidation method to transform aryl(di)azinylmethanes into aryl(di)azinylketones is described. Base metals (copper and iron) as catalysts in combination with O2 as the oxidant are used, which makes this method sustainable. The utility of this method is illustrated by the synthesis of 6‐(4‐methylbenzoyl)pyridine‐2‐carbaldehyde, which is an intermediate in the preparation of
3‐disubstituted phthalides in good to high yields at ambienttemperature. In a similar manner, 3‐hydroxyisoindolin‐1‐one and 3‐hydroxyoxindole derivatives could also be easily prepared by direct reductive coupling of phthalimides and N‐substituted isatins with activated alkenes, respectively. Application of this methodology towards the synthesis of 1‐naphthol derivatives on a gram scale is also depicted