摘要:
A process for preparing optically active nitro compounds and cyano compounds using a metal complex, which is obtained by reaction of an optically active nitrogen-containing compound and a periodic table group VIII metal complex, in the asymmetric Michael reaction.
摘要:
A process for preparing optically active nitro compounds and cyano compounds represented by the chemical formula (C) using a metal complex, which is obtained by reaction of an optically active nitrogen-containing compound and a periodic table group VIII metal complex, in the asymmetric Michael reaction of a compound represented by the chemical formula (A) and a compound represented by the chemical formula (B) according to the claim 1.
摘要:
A highly efficient process is provided for producing an optically active compound having high optical purity by an asymmetric reaction using as a catalyst a transition metal complex having an optically active nitrogen-containing compound as an asymmetric ligand.
摘要:
A process for producing an optically active amino alcohol is provided that includes a step in which a nitro ketone or a cyano ketone is reacted with a hydrogen-donating organic or inorganic compound in the presence of a transition metal compound catalyst having an optically active nitrogen-containing compound as an asymmetric ligand to give an optically active nitro alcohol or an optically active cyano alcohol, and a step in which the above optically active alcohol is further reduced to efficiently produce an optically active amino alcohol.
摘要:
Alcohols are produced in a practical and advantageous method, by the hydrogenation of a carbonyl compound under mild conditions, by reacting the carbonyl compounds with hydrogen in the presence of a bipyridyl derivative, a group VIII transition metal complex, and a base, or by reducing a carbonyl compound in the presence of a bipyridyl derivative, a group VIII transition metal complex, a base, and an alcoholic solvent.
摘要:
The invention provides novel ruthenium complexes having an optically active diphosphine compound, which has asymmetry on carbon and is easy to synthesize, as the ligand and a process for preparing optically active alcoholic compounds using said complexes as the catalysts, wherein said process is the process for preparing optically active alcoholic compounds, which are excellent in terms of reactivity, enatioselectivity and the like in an asymmetric hydrogenation of carbonyl compounds compared with conventional ruthenium complex catalysts having an optically active diphosphine compound having the axial chirality or the asymmetry on carbon as the ligand. In a preferred embodiment, the invention provides an optically active ruthenium complex represented by the general formula (1) wherein X and Y, which can be identical to or different from each other, represent a hydrogen atom or an anion group, R1 and R2, which can be identical to or different from each other, represent a chain or cyclic hydrocarbon group of carbon number 1 to 20, which can be substituted, R3 and R4, which can be identical to or different from each other, represent a hydrogen atom or a hydrocarbon group of carbon number 1 to 3, and R5, R6, R7 and R8, which can be identical to or different from one another, represent a hydrocarbon group of carbon number 1 to 30, which can be substituted, with the proviso that when X and Y are bromine, R1 and R2 are a methyl group, and when R3 and R4 are a hydrogen atom, at least one of R5, R6, R7 and R8 is not a phenyl group.
摘要:
The present invention provides an asymmetric reduction catalyst effective in preparing optically-active alcohol compounds having various functional groups, and a process for preparing optically-active alcohol compounds using said asymmetric reduction catalyst.The organic metal compound of the present invention is represented by the following general formula (1): wherein R1 and R2 may be mutually identical or different, and are an alkyl group, a phenyl group, a naphthyl group, a cycloalkyl group, or an alicyclic ring formed by binding R1 and R2, which may have a substituent; R3 is a hydrogen atom or an alkyl group; Cp is a cyclopentadienyl group, which may have a substituent, bound to M1 via a π bond; X1 is a halogen atom or a hydrido group; M1 is rhodium or iridium; and * denotes asymmetric carbon.
摘要:
[Problem] The present invention aims to provide a novel organometallic compound that can be used as a general-use highly active catalyst with superior selectivity for functional groups.[Means for Solving Problem] The present invention relates to an organometallic compound having a novel specific structure of general formula (1): and to a general-use highly active catalyst used in reductive amination reaction with superior selectivity for functional groups that comprises said organometallic compound, and to a process for preparing amine compounds by reductive amination reaction using said catalyst.
摘要:
The present invention provides an asymmetric reduction catalyst effective in preparing optically-active alcohol compounds having various functional groups, and a process for preparing optically-active alcohol compounds using said asymmetric reduction catalyst.The organic metal compound of the present invention is represented by the following general formula (1): wherein R1 and R2 may be mutually identical or different, and are an alkyl group, a phenyl group, a naphthyl group, a cycloalkyl group, or an alicyclic ring formed by binding R1 and R2, which may have a substituent; R3 is a hydrogen atom or an alkyl group; Cp is a cyclopentadienyl group, which may have a substituent, bound to M1 via a π bond; X1 is a halogen atom or a hydrido group; M1 is rhodium or iridium; and * denotes asymmetric carbon.
摘要:
[Problem]The present invention aims to provide a novel organometallic compound that can be used as a general-use highly active catalyst with superior selectivity for functional groups.[Means for Solving Problem]The present invention relates to an organometallic compound having a novel specific structure of general formula (1): and to a general-use highly active catalyst used in reductive amination reaction with superior selectivity for functional groups that comprises said organometallic compound, and to a process for preparing amine compounds by reductive amination reaction using said catalyst.