摘要:
PROBLEM TO BE SOLVED: To provide a method for producing an optically active sulfoxide compound useful as a synthetic intermediate or base material for a physiologically active substance such as a medicine, etc., in a high optical purity. SOLUTION: The method for producing an optically active sulfoxide compound such as methyl phenyl sulfoxide, etc., comprises subjecting a sulfide compound represented by thioanisole to a liquid-phase oxidation in the presence of an aluminum salalen complex as an optically active metal complex catalyst by using an oxidizing agent such as hydrogen peroxide, etc., and a solvent such as methanol. The optically active metal complex is obtained. COPYRIGHT: (C)2008,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a new method for producing an optically active epoxy compound.SOLUTION: An oxidizing agent is reacted with an unsaturated compound that has a double bond within the molecule by using an optically active chloro (salen) ruthenium (III) aqua complex expressed by general formula (1-1) or the like as a catalyst. In the formula, Rindependently shows a phenyl group or a phenyl group substituted by (Z)q, Zshows a halogen atom, and qshows an integer of 1 to 5.
摘要:
PROBLEM TO BE SOLVED: To provide a method for producing an optically active epoxy compound, which considers global environmental load.SOLUTION: The optically active epoxy compound is produced in a high enantioselectivity by a reaction using an optically active ruthenium (nitrosyl)-salen complex represented by formula (1) as a catalyst and molecular oxygen as an oxidizing agent under light irradiation.
摘要:
PROBLEM TO BE SOLVED: To provide: a process for producing an optically active epoxy compound and an optically active sulfoxide compound; a ligand and a complex for use in the process; and a process for producing the complex.SOLUTION: Disclosed are: an optically active titanium-salen complex, an optically active titanium-salalen complex and an optically active titanium-salen complex having structures represented by formulae (21a), (21b), (22) and others; a process for producing an optically active epoxy compound or an optically active sulfoxide compound through the asymmetric oxidation reaction of an olefin compound or a sulfide compound using any one of the complexes as a catalyst; a ligand and a complex for use in the process; and a process for producing any one of the complexes.
摘要:
PROBLEM TO BE SOLVED: To provide an efficient method of producing an optically active cis-silylolefin oxide compound useful as an intermediate for a variety of compounds. SOLUTION: The method of producing an optically active cis-silylolefin oxide compound according to the reaction equation shown in the drawing employs an optically active titanium complex represented by formula (1), formula (2) or the like as a catalyst (in the formulae, R 1 represents a hydrogen atom, a halogen atom or the like, R 2 represents a hydrogen atom, a halogen atom, a 1-4C alkyl group or the like, R 3 represents a 1-4C alkyl group or the like, R 4 each independently represents a hydrogen atom, a halogen atom or the like, and M represents Ti). COPYRIGHT: (C)2011,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a method for efficiently producing an optically active titanium salalen compound useful for asymmetric epoxidation. SOLUTION: A method is provided for producing an optically active titanium salalen compound in a high yield and in a high chemical purity by utilizing conditions in which an optically active titanium salalen compound represented by formula (1), formula (2), or the like is crystallized. COPYRIGHT: (C)2008,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide an optically active titanium-salan compound useful for asymmetric epoxidation, and to provide a method for efficiently producing the same.SOLUTION: In isolating an optically active titanium-salan compound as a di-μ-oxo titanium-salan complex, the complex has been found to be present as a mixture of three geometrical isomers. By comparing the catalytic performances of the major two geometrical products, it has been found that the homochiral complex gives a higher ultimate yield than that of the pseudo-heterochiral complex in asymmetric epoxidation. In the production of the optically active titanium-salan compound, therefore, a study has been made on production technique which enables efficient formation of the homochiral complex of the optically active titanium-salan compound and which makes it possible to exclude the pseudo-heterochiral complex of the optically active titanium-salan compound as completely as possible. As a result, a technique for producing the homochiral complex of the optically active titanium-salan compound efficiently in a high isolation yield and with high chemical purity has been established by using a nitrile-, ether-, or aromatic hydrocarbon-type organic solvent in the production of the titanium-salan compound.
摘要:
PROBLEM TO BE SOLVED: To provide a method for producing an optically active epoxy compound, a complex to be used in the method and a method for producing the complex. SOLUTION: The method for producing an optically active epoxy compound comprises an asymmetric epoxidation reaction of a prochiral compound having a carbon-carbon double bond in the molecule by using an optically active titanium-salen complex expressed by formula (1) and formula (1') as a catalyst. The invention further provides a complex to be used in the production method and a method for producing the complex. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a novel method for producing an optically active amine compound by using an optically active ruthenium-salen complex as a catalyst.SOLUTION: The method for producing an optically active amine compound includes reacting a sulfonylazide compound represented by formula (2) (wherein Ris a 1-6C alkyl group or the like) with an unsaturated compound having a double bond in the molecule or a substituted aromatic compound, by using a predetermined optically active ruthenium-salen complex as a catalyst.
摘要:
PROBLEM TO BE SOLVED: To provide a new method for producing an optically active epoxy compound.SOLUTION: The method includes a step of reacting an oxidizing agent with an unsaturated compound that has a double bond within the molecule in the presence of a dehydrating agent, in which racemization of propeller type asymmetry that originates in the skeleton of a trisphenol amine ligand is controlled by introducing a skeleton that has a binaphthyl skeleton and axial asymmetry into the phenol skeleton of the trisphenol amine ligand. In addition, an optically active epoxy compound is produced with high selectivity by using a hafnium complex that has an optically active trisnaphthol amine ligand.