NOVEL BISPHOSPHINE LIGAND

摘要

PROBLEM TO BE SOLVED: To provide an optically active phosphine ligand which can be easily synthesized and gives a transition metal complex excellent in asymmetric catalytic activity.

SOLUTION: A compound expressed by general formula (I) [wherein R1expresses H or an alkyl group; R2expresses a hydroxyalkyl group or a triarylmethoxyalkyl group; Ar1to Ar4express each an aryl group (the aryl group may have 1-5 of the same or different substituents); *1-*4 express each an asymmetric carbon; *1 and *2 have each a cis configuration, *3 and *4 have each a trans configuration, and *2 and *3 have each a trans configuration] is provided.

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