[EN] SYNTHESIS OF PHOSPHINE LIGANDS BEARING TUNABLE LINKAGE: METHODS OF THEIR USE IN CATALYSIS<br/>[FR] SYNTHÈSE DE LIGANDS DE PHOSPHINE PORTANT UNE LIAISON RÉGLABLE : PROCÉDÉS POUR LEUR UTILISATION DANS UNE CATALYSE
申请人:THE HONG KONG POLYTECHNIC UNIV SHENZHEN RESEARCH INSTITUTE
公开号:WO2017193288A1
公开(公告)日:2017-11-16
A series of novel linked indolyl phosphine ligands for transition metals, the synthesis thereof and their use in catalytic coupling reactions are provided. The ligands provide improvements of trasition-metal-catalyzed reactions, including the range of substrates scope, reaction conditions and efficieny.
A new family of phosphine ligands bearing a bulky carbazolyl scaffold is described. With the combination of ligand 2a and Pd(OAc)2, difficult tri-ortho-substituted biaryl couplings are accomplished smoothly. In particular, the catalyst loading as low as 0.02 mol% of Pd for non-activated 2,6-disubstituted aryl chloride coupling can be achieved.