Novel optically active phosphorus-chiral diphosphetanes, intermediates of the same, and transition metal complexes containing the diphosphetanes as the ligand

Abstract

The present invention provides a novel optically active phosphorus-chiral diphosphetane compound useful as a ligand of a transition metal catalyst which is used for catalytic asymmetric synthesis such as asymmetric hydrogenation reaction and the like, the ligand capable of creating a stable asymmetric space when coordinating to a central metal, an intermediate of the compound, and a transition metal complex catalyst having the compound as a ligand. The optically active diphosphetane compound of the present invention has a structure represented by formula (1): (wherein R represents a linear, branched, or cyclic alkyl group having 2 to 20 carbon atoms).

Dependencies are inferred from the claim text.