[EN] LIGANDS FOR METALS AND IMPROVED METAL-CATALYZED PROCESSES BASED THEREON<br/>[FR] LIGANDS POUR METAUX ET PROCESSUS PERFECTIONNES CATALYSES PAR DES METAUX BASES SUR CEUX-CI
申请人:MASSACHUSETTS INST TECHNOLOGY
公开号:WO2000002887A2
公开(公告)日:2000-01-20
One aspect of the present invention relates to novel ligands for transition metals. A second aspect of the present invention relates to the use of catalysts comprising these ligands in transition metal-catalyzed carbon-heteroatom and carbon-carbon bond-forming reactions. The subject processes provide improvements in many features of the transition metal-catalyzed reactions, including the range of suitable substrates, reaction conditions, and efficiency.
One-Pot Synthesis of Unsymmetrical Triarylamines from Aniline Precursors
作者:Michele C. Harris、Stephen L. Buchwald
DOI:10.1021/jo000674s
日期:2000.8.1
The "one-pot" synthesis of triarylamines from an aniline and two different aryl halides is described. A catalytic system composed of Pd2(dba)3/P(t-Bu)2-o-biphenyl (1) is used to prepare a variety of triarylamines in a single flask by the coupling of an aniline with an aryl bromide and aryl chloride. The synthesis of triarylamines containing a heterocyclic aryl group is also described by employing a