Regioselective Cobalt-Catalyzed Diels-Alder Reaction towards 1,3-Disubstituted and 1,2,3-Trisubstituted Benzene Derivatives
作者:Gerhard Hilt、Michael Danz
DOI:10.1055/s-2008-1078450
日期:2008.7
A straightforward reaction sequence consisting of the Wittig olefination of aldehydes utilizing allyltriphenylphosphonium bromide for the generation of 1-substituted 1,3-dienes, cobalt-catalyzed neutral Diels-Alderreaction with terminal and internal alkynes, and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) oxidation of the dihydroaromatic intermediates leads to regiochemically enriched biphenyl
Novel organic electroluminescent compounds and organic electroluminescent device using the same
申请人:Gracel Display Inc.
公开号:EP2098532A1
公开(公告)日:2009-09-09
The present invention relates to novel organic electroluminescent compounds exhibiting high luminous efficiency, and organic electroluminescent devices comprising the same. The organic electroluminescent compounds according to the invention are characterized in that they are represented by Chemical Formula (1):