Chiral imidate–ferrocenylphosphanes: synthesis and application as P,N-ligands in iridium(i)-catalyzed hydrogenation of unfunctionalized and poorly functionalized olefins
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