The treatment of triphenylphosphine oxide with organometallic reagents leads to the substitution of up to three phenyl substituents with the incoming carbon nucleophile. The replacement of the phenyl/aryl group in tertiary diarylalkylphosphine oxides or even aryldialkylphosphine oxides was also observed. Naphthyl-substituted phosphine oxides undergo Michael-type addition at the naphthyl group when
An efficient P-arylation of secondary phosphine oxides has been achieved through the ligand-free copper-catalyzed addition of H–P(O) bonds to in situ generated arynes at room temperature. This transformation provides a straightforward route to the formation of the aryl–P bond with wide functional group compatibility, which produces arylphosphine oxides in up to 99% yield.
NiCl2-catalyzed P–C coupling reaction of arylhalides and various > P(O)H-compounds under MW conditions without directly added P-ligands. The reactivity of a few aryl derivatives in the Pd(OAc)2-catalyzed Hirao reaction was also studied. An induction period was observed in the reaction of bromobenzene and diphenylphosphine oxide. Finally, the less known copper(I)-promoted P–C coupling reactions were investigated
New materials for electroluminescence and the utilization thereof
申请人:Heun Susanne
公开号:US20070080343A1
公开(公告)日:2007-04-12
The present invention relates to organic semiconductors which contain structural units L=X and in addition structural units which emit light from the triplet state. The materials according to the invention are more soluble and easier to synthesise and are therefore more suitable for use in organic light-emitting diodes than comparative materials in accordance with the prior art.
MATERIALS FOR ELECTROLUMINESCENCE AND THE UTILIZATION THEREOF
申请人:Heun Susanne
公开号:US20100102305A1
公开(公告)日:2010-04-29
The present invention relates to organic semiconductors which contain structural units L=X and in addition structural units which emit light from the triplet state. The materials according to the invention are more soluble and easier to synthesise and are therefore more suitable for use in organic light-emitting diodes than comparative materials in accordance with the prior art.