Mechanistic Comparison between Pd-Catalyzed Ligand-Directed C−H Chlorination and C−H Acetoxylation
摘要:
This communication describes detailed investigations of the mechanism of the Pd-catalyzed C-H chlorination and acetoxylation of 2-o-tolylpyridine. Under the conditions examined, both reactions proceed via rate-limiting cyclopalladation. However, substrate and catalyst order as well as Hammett data Indicate that the intimate mechanism of cyclopalladation differs significantly between PdCl2-catalyzed chlorination and Pd(OAc)(2)-catalyzed acetoxylation.
Provided are a compound having a metal M and a first ligand L
A
comprising the structure of
where the compound is capable of functioning as a phosphorescent emitter in an organic light emitting device at room temperature.
The first solid-supported directed aromatic C–Hactivation/acetoxylation has been successfully developed by using palladium nanoparticles supported on graphene oxide (PdNPs/GO) as a catalyst. The practicability of this method is demonstrated by simple preparation of catalyst, high catalytic efficiency, wide functional group tolerance, and easy scale up of the reaction. A hot filtration test and Hg(0)
[EN] ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME<br/>[FR] COMPOSÉ ÉLECTROLUMINESCENT ORGANIQUE ET DISPOSITIF ÉLECTROLUMINESCENT ORGANIQUE LE COMPORTANT
申请人:ROHM & HAAS ELECT MATERIALS KOREA LTD
公开号:WO2017191896A1
公开(公告)日:2017-11-09
The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound of the present disclosure, an organic electroluminescent device having excellent luminous properties can be produced.
[EN] ORGANIC ELECTROLUMINESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME<br/>[FR] COMPOSÉS ÉLECTROLUMINESCENTS ORGANIQUES ET DISPOSITIF ÉLECTROLUMINESCENT ORGANIQUE LES COMPRENANT
申请人:ROHM & HAAS ELECT MATERIALS KOREA LTD
公开号:WO2017030283A1
公开(公告)日:2017-02-23
The present disclosure relates to organic electroluminescent compounds and an organic electroluminescent device comprising the same. The organic electroluminescent compound according to the present disclosure may be comprised in a light-emitting layer or an electron buffer layer, and is effective to produce an organic electroluminescent device having low driving voltage, excellent current and power efficiencies, and significantly improved operative lifespan.
[EN] ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME<br/>[FR] COMPOSÉ ÉLECTROLUMINESCENT ORGANIQUE ET DISPOSITIF ÉLECTROLUMINESCENT ORGANIQUE LE COMPRENANT
申请人:ROHM & HAAS ELECT MATERIALS KOREA LTD
公开号:WO2018066812A1
公开(公告)日:2018-04-12
The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound of the present disclosure can provide an organic electroluminescent device having low driving voltage and/or high power efficiency properties.