摘要:
A process is provided for efficiently producing an optically active 3-quinuclidinol derivative of high optical purity using a readily available ruthenium compound as an asymmetric reduction catalyst. This process is a process for producing an optically active 3-quinuclidinol derivative represented by the following formula (III) comprising asymmetrically hydrogenating a 3-quinuclidinone derivative represented by the following formula (I) in the presence of a ruthenium compound (II) represented by formula (II): Ru(X)(Y)(Px)n[R1R2C*(NR3R4)-A-R5R6C*(NR7R8)] (in the formulas, R represents a hydrogen atom or C7 to C18 aralkyl group and the like, X and Y represent hydrogen atoms or halogen atoms and the like, Px represents a phosphine ligand, n represents 1 or 2, R1 to R8 represent hydrogen atoms or C1 to C20 alkyl groups and the like, * represents an optically active carbon atom and A represents an ethylene group and the like).
摘要:
A process is provided for efficiently producing an optically active 3-quinuclidinol derivative of high optical purity using a readily available ruthenium compound as an asymmetric reduction catalyst. This process is a process for producing an optically active 3-quinuclidinol derivative represented by the following formula (III) comprising asymmetrically hydrogenating a 3-quinuclidinone derivative represented by the following formula (I) in the presence of a ruthenium compound (II) represented by formula (II): Ru(X)(Y)(Px)n[R1R2C*(NR3R4)-A-R5R6C*(NR7R8)] (in the formulas, R represents a hydrogen atom or C7 to C18 aralkyl group and the like, X and Y represent hydrogen atoms or halogen atoms and the like, Px represents a phosphine ligand, n represents 1 or 2, R1 to R8 represent hydrogen atoms or C1 to C20 alkyl groups and the like, * represents an optically active carbon atom and A represents an ethylene group and the like).
摘要:
A process is provided for efficiently producing an optically active 3-quinuclidinol derivative of high optical purity using a readily available ruthenium compound as an asymmetric reduction catalyst. This process is a process for producing an optically active 3-quinuclidinol derivative represented by the following formula (III) comprising asymmetrically hydrogenating a 3-quinuclidinone derivative represented by the following formula (I) in the presence of a ruthenium compound (II) represented by formula (II): Ru(X)(Y)(Px)n[R1R2C*(NR3R4)-A-R5R6C*(NR7R8)] (in the formulas, R represents a hydrogen atom or C7 to C18 aralkyl group and the like, X and Y represent hydrogen atoms or halogen atoms and the like, Px represents a phosphine ligand, n represents 1 or 2, R1 to R8 represent hydrogen atoms or C1 to C20 alkyl groups and the like, * represents an optically active carbon atom and A represents an ethylene group and the like).
摘要:
A novel ruthenium compound that is useful as an asymmetric reduction catalyst for carbonyl compounds. The ruthenium compound of the present invention is represented by a formula (I): (Ru(X)2(Pxx)[R1R2C(NH2)—R3R4C(NH2)] (I)), and when this compound is used as an asymmetric reduction catalyst, an optically active aminoalcohol compound can be produced from an α-aminoketone, and particularly a compound represented by formula (IV), with high stereoselectivity and high yield.
摘要:
A novel ruthenium compound that is useful as an asymmetric reduction catalyst for carbonyl compounds. The ruthenium compound of the present invention is represented by a formula (I): (Ru(X)2(Pxx)[R1R2C(NH2)—R3R4C(NH2)] (I)), and when this compound is used as an asymmetric reduction catalyst, an optically active aminoalcohol compound can be produced from an α-aminoketone, and particularly a compound represented by formula (IV), with high stereoselectivity and high yield.