NEW CHIRAL ZIRCONIUM CATALYST AND MANUFACTURING METHOD OF OPTICAL ACTIVITY BETA-AMINOCARBONYL COMPOUND USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a chiral zirconium catalyst which is stable in air and suitable for practical use.

SOLUTION: The new chiral zirconium catalyst is prepared by crystallizing powder obtained by mixing Zr(OR)4(provided that R denotes a straight or branched alkyl group), (R)-6,6'-Br2BINOL and N-alkyl imidazole or N-benzyl imidazole in an organic solvent containing water.

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