| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new catalyst giving an aimed product in higher asymmetric yield than ever, and to provide a ligand for use in the catalyst. <P>SOLUTION: The ligand is represented by the formula(1)(wherein, R<SP>1</SP>to R<SP>5</SP>are each H, an alkyl, halogen group, alkoxy or aromatic ring, wherein R<SP>1</SP>to R<SP>5</SP>may be the same as or different from each other, and R<SP>1</SP>and R<SP>2</SP>may be joined together to form a ring). <P>COPYRIGHT: (C)2008,JPO&INPIT |
