A terphenyl phosphine as a highly efficient ligand for palladium-catalysed amination of aryl halides with 1° anilines
作者:Fabin Zhou、Lixue Zhang、Ji-cheng Shi
DOI:10.1016/j.jcat.2021.08.017
日期:2021.10
A terphenyl phosphine ligand (2,6-bis(2,4,6-triisopropylphenyl)phenyl-dicyclohexylphosphine, TXPhos) and its supported palladium complex [(TXPhos)(allyl)PdCl] have been developed and the catalyst system is highly efficient in amination of arylhalides with 1° anilines, especially effective for densely functionalized substrates including both partners possessing ortho-ester, acetyl, nitrile and nitro
great importance of N-substituted benzimidazoles in pharmaceutics, here N-aryl benzimidazoline produced in situ was used as a H2 donor, which was converted to C–N axially chiral N-aryl benzimidazole by CPA-catalyzed enantioselective transfer hydrogenation of the in situ produced imine.
2-Nitrodiarylamines are prepared in good yields from 2-chloronitrobenzene and anilines in the presence of potassium fluoride without solvent at 160-170°C.
A novel Pt tetradentate complexes having Pt—O bond is disclosed. These complexes are useful as emitters in phosphorescent OLEDs.
本发明揭示了一种具有Pt-O键的新型四齿配合物。这些配合物在磷光OLED中作为发射体是有用的。
Transition-metal-catalyzed carbon-nitrogen bond-forming methods using carbene ligands
申请人:——
公开号:US20040044250A1
公开(公告)日:2004-03-04
The present invention relates to a process for the preparation of N-aryl amine and N-aryl amide compounds. Generally, the process of the present invention involves reacting a compound having a primary or secondary amino or amido group with an arylating compound, in the presence of a weak base and a transition metal catalyst, under reaction conditions effective to form an N-aryl amine or N-aryl amide compound, the transition metal catalyst comprising a Group 8 metal, e.g., Ni, Pd, or Pt, and at least one carbene-containing ligand. Typically, the transition metal catalyst is formed in a preceding step from the conjugate acid form of the carbene ligand, a stoichiometric amount of a strong base, and a Group 8 metal atom or ion.