Cyclisation reactions involving the oxidation of carboxylic acids with lead tetra-acetate. Part I. The conversion of 2′-substituted biphenyl-2-carboxylic acids into 3,4-benzocoumarin
作者:D. I. Davies、C. Waring
DOI:10.1039/j39670001639
日期:——
The reaction of 2′-substituted biphenyl-2-carboxylic acids (where the 2′-substituent is H, CO2H, NO2, Cl, OMe, or CO2Me) with leadtetra-acetate in refluxing benzene solution, under a nitrogen atmosphere, affords 3,4-benzocoumarin as a major organic product. Only a trace is formed when the 2′-substituent is Me. o-Terphenyl-2-carboxylic acid gives no 3,4-benzocoumarin, but triphenylene is formed in
The invention relates to fluorene derivatives and electronic devices, particularly organic electroluminescent devices in which said compounds are used, particularly as a matrix material for phosphorescent emitters.
[DE] MATERIALIEN FÜR ORGANISCHE ELEKTROLUMINESZENZVORRICHTUNGEN<br/>[EN] MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES<br/>[FR] MATÉRIAUX POUR DISPOSITIFS ÉLECTROLUMINESCENTS ORGANIQUES
申请人:MERCK PATENT GMBH
公开号:WO2020148303A1
公开(公告)日:2020-07-23
Die vorliegende Erfindung betrifft die Fluorenderivate und elektronische Vorrichtungen, insbesondere organische Elektrolumineszenzvorrichtungen, in denen diese Verbindungen verwendet werden, insbesondere als Matrixmaterial für phosphoreszierende Emitter.