Chiral tetradentate ligand and its use for asymmetric catalysis

摘要

Disclosed is a chiral compound represented by the following formula (Ia) or (Ib). (Ia) (Ib) [In the formulae, R represents an optionally substituted alkyl group or an optionally substituted aryl group; and R' represents a hydrogen atom, a halogen atom, an optionally substituted alkyl group, an optionally substituted alkenyl group, an optionally substituted aryl group, an R''O group or an R''SUB2/SUBN group. In this connection, aryl groups represented by R' include those fused to a substituted pyridine to form a fused ring together with the pyridine ring, and R'' represents a hydrogen atom, an optionally substituted alkyl group, an optionally substituted alkenyl group or an optionally substituted aryl group.]