Synthesis of a Variety of Metallophosphine Chelates and Elucidation and Their Functionality as Ligands

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Metallochelate-type phosphorus ligands, in which a transition-metal complex is incorporated in a chelate-backbone, are expected to be a useful auxiliary ligand for a development of a new metal-catalyst. In this project, two following systems are investigated : 1) new diphosphine chelates bearing a group 4 metal in a chelate-backbone were prepared, and their Pd complexes were found to exhibit high catalytic activities for addition reaction of a P-H bond to C-C triple bonds, 2) several phosphamacrocycles having ferrocene units as chelate-chains were synthesized, and their functionalities were exprored.