Palladium-Catalyzed Highly Selective ortho-Halogenation (I, Br, Cl) of Arylnitriles via sp2 C–H Bond Activation Using Cyano as Directing Group
摘要:
A palladium-catalyzed ortho-halogenation (I, Br, Cl) of arylnitrile is described. The optimal reaction conditions were identified after examining various factors such as catalyst, additive, solvent, and reaction temperature. Using cyano as the directing group, the halogenation reaction gave good to excellent yields. The method is compatible to the arylnitriles with either electron-withdrawing or electron-donating groups. The reaction is available to the substrate in at least gram scale. The present method was successfully applied to the synthesis of the precursors of paucifloral F and isopaucifloral F.
Arylpiperazine Derivatives and their Use as Selective Dopamine D3 Receptor Ligands
申请人:Capet Marc
公开号:US20080214542A1
公开(公告)日:2008-09-04
The invention concerns compounds of general formula (I), a method for preparing same, as well as their use as therapeutic agent.
这项发明涉及一般式(I)的化合物,以及制备这些化合物的方法,以及它们作为治疗剂的用途。
NHC-Catalyzed Synthesis of Benzazole-Phosphine Ligands under an Air Atmosphere
作者:Wei Ren、Qian-Ming Zuo、Shang-Dong Yang
DOI:10.1055/s-0037-1610723
日期:2019.9
An efficient strategy for the synthesis of benzazole-phosphine ligand precursors via N-heterocyclic carbene catalyzedaerobic oxidative cyclization reaction has been performed. The reaction displays broad functional group tolerance and high atom economy, and the transformation has been further applied to benzazole-phosphine ligand synthesis.
[EN] PROBES FOR IMAGING HUNTINGTIN PROTEIN<br/>[FR] SONDES D'IMAGERIE DE LA PROTÉINE HUNTINGTINE
申请人:CHDI FOUNDATION INC
公开号:WO2016033460A1
公开(公告)日:2016-03-03
Provided are imaging agents comprising a compound of Formula (I), or a pharmaceutically acceptable salt thereof, and methods of their use.
提供的是包含式(I)化合物或其药学上可接受的盐的成像剂,以及它们的使用方法。
CYCLIC IMIDATE LIGANDS
申请人:Noël Timothy
公开号:US20120077989A1
公开(公告)日:2012-03-29
The present invention relates to a use of a cyclic imidate as a ligand for catalysis in which the ligand contains sub-structure (Y) as a minimal structural motive, wherein the carbon atoms and the nitrogen atom can be optionally substituted by a chemical substituent.
Imidate-Phosphanes as Highly Versatile N,P Ligands and Their Application in Palladium-Catalyzed Asymmetric Allylic Alkylation Reactions
作者:Timothy Noël、Katrien Bert、Erik Van der Eycken、Johan Van der Eycken
DOI:10.1002/ejoc.201000238
日期:2010.7
Chiral imidate-phosphanes were developed as a new type of N,P ligands. These ligands are easily accessible through a one-step procedure starting from a commercially available chiral aminophosphane and an imidate precursor. Excellent performance of the catalyst system was observed with various carbon nucleophiles in the Pd(0)-catalyzed asymmetric allylic alkylation (up to 99% yield and >99 % ee). Moreover