摘要:
Disclosed is a ruthenium-phosphine complex represented by formula (I):�{RuX(L)}.sub.2 (.mu.-X).sub.3 !.sup.- �R.sub.2 NH.sub.2 !.sup.+(I)wherein R is hydrogen, an alkyl group having 1 to 5 carbon atoms, a cycloalkyl group, a substituted or unsubstituted phenyl group or a substituted or unsubstituted benzyl group; X is halogen; and L is an optically active or inactive tertiary phosphine. A process for preparing the complex (I) is also disclosed, which comprises (A) reacting a ruthenium complex represented by formula: �RuX(arene)(L)!X (wherein arene is a substituted or unsubstituted phenyl group) and an ammonium salt represented by formula (III): R.sub.2 NH.HX, or (B) reacting a ruthenium complex represented by formula: �RuX.sub.2 (arene)!.sub.2, a tertiary phosphine represented by L, and an ammonium salt (III). The complex (I) useful as a catalyst for general syntheses or asymmetric syntheses can be obtained easily in good yield.
摘要:
Disclosed is a selective ester production process of an alcoholic hydroxyl group, which proceeds under chemically mild conditions, while having adequate environmental suitability, operability and economical efficiency. Specifically disclosed is a process for producing an ester compound, which is characterized in that an alcohol and a carboxylic acid ester compound are reacted in the presence of a compound containing zinc element, thereby selectively acylating a hydroxyl group of the alcohol.
摘要:
Disclosed is a selective ester production process of an alcoholic hydroxyl group, which proceeds under chemically mild conditions, while having adequate environmental suitability, operability and economical efficiency. Specifically disclosed is a process for producing an ester compound, which is characterized in that an alcohol and a carboxylic acid ester compound are reacted in the presence of a compound containing zinc element, thereby selectively acylating a hydroxyl group of the alcohol.
摘要:
A ruthenium-phosphine complex represented by formula (I)[RuX.sub.l (L).sub.m (R-BINAP)]Y.sub.n (I)wherein R-BINAP represents a tertiary phosphine represented by formula (II): ##STR1## wherein R represents a hydrogen atom or a methyl group; X represents a halogen atom; L represents substituted or unsubstituted benzene or acetonitrile; Y represents a halogen atom, CLO.sub.4, PF.sub.6, BPh.sub.4 (wherein Ph represents a phenyl group) or BF.sub.4 ; when L is substituted or unsubstituted benzene, l represents 1, m represents 1, and n represents 1; and whe L is acetonitrile, when l is 1, then m represents 2, and n represents 1, and when l is 0, the m represents 4, and n represent 2. The complex exhibits excellent catalytic activity in asymmetric reactions to provide a product of high optical purity. The complex can be produced at low cost.
摘要:
An amidine-carboxylic acid complex in accordance with an aspect of the invention has an amidine ligand and a carboxylic acid ligand that are coordinated to one metal atom or a plurality of metal atoms of the same element. A multiple-complex-containing compound, i.e. a bridged polynuclear complex, in accordance with the aspect of the invention is formally derived from two or more such amidine-carboxylic acid complexes, linked by a polyvalent carboxylic acid ligand. The bridged polynuclear complex may be used in a production method to support metal (oxide) clusters on a porous support by impregnating these with a solution thereof, followed by drying and firing.
摘要:
The invention relates to a method for producing an azoline compound represented by the general formula (3): wherein R1 represents an optionally substituted hydrocarbon group, an optionally substituted alkoxy group, an optionally substituted alkoxycarbonyl group, a halogen atom, a substituted amino group, a substituted carbamoyl group or an optionally substituted heterocyclic group; R3, R4, R5 and R6 may be the same or different and each represents a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted alkoxy group, an optionally substituted alkoxycarbonyl group, a halogen atom, a substituted amino group, a substituted carbamoyl group or an optionally substituted heterocyclic group; two arbitrary groups selected from R3, R4, R5 and R6 may bond to each other to form a ring; and Z1 represents an oxygen atom, a sulfur atom or a selenium atom; comprising reacting a carboxylic acid or a carboxylic acid derivative represented by the general formula (1): R1CO2R2 (1) wherein R1 is as defined above; R2 represents a hydrogen atom, an optionally substituted alkyl group or an optionally substituted aryl group; and R1 and R2 may bond to each other to form a ring; with an aminochalcogenide represented by the general formula (2): wherein R3, R4, R5, R6 and Z1 are as defined above; in the presence of a compound containing a group 12 metal element in the periodic table.
摘要:
The present invention has as its object to provide an iridium complex represented by the general formula: [(l r H L1 L2)2(μ-X1)(μ-X2)(μ-X3)]X4 (1) (wherein L1 and L2 may be the same or different and each represent a monodendate neutral ligand, or each cooperate with the other to form a bidendate neutral ligand; X1, X2 and X3 may be the same or different, and each represent a halogen atom; and X4 is a counter-anion). Also, the present invention provides a novel catalyst which can achieve excellent performance as a catalyst for asymmetric synthesis, especially asymmetric hydrogenation, in terms of chemical selectivity, enantioselectivity and catalytic activity, and the like.
摘要翻译:本发明的目的是提供由以下通式表示的铱络合物:<?in-line-formula description =“In-line formula”end =“lead”?> [(lr H L1 L2)2(mu -X1)(mu-X2)(mu-X3)] X4(1)<?in-line-formula description =“In-line Formulas”end =“tail”?>(其中L1和L2可以相同或 各自代表一个单体中性配体,或者每个与另一个配位,以形成一种双羟纶中性配体; X 1,X 2和X 3可以相同或不同,各自表示卤素原子; X 4是抗衡阴离子)。 此外,本发明提供了一种新颖的催化剂,其在化学选择性,对映选择性和催化活性等方面可以获得作为不对称合成,特别是不对称氢化的催化剂的优异性能。
摘要:
A multiple-metal complex-containing compound in accordance with an embodiment has a plurality of metal complexes in each of which a ligand is coordinated to one metal atom or a plurality of metal atoms of the same kind. The plurality of metal complexes are bound to each other via a polydentate ligand that substitutes partially the ligands of the two or more metal complexes, and have 2 to 1000 metal atoms.
摘要:
The present invention has as its object to provide an iridium complex represented by the general formula: [(I r H L1 L2)2(μ−X1)(μ−X2)(μ−X3)]X4 (1) (wherein L1 and L2 may be the same or different and each represent a monodendate neutral ligand, or each cooperate with the other to form a bidendate neutral ligand; X1, X2 and X3 may be the same or different, and each represent a halogen atom; and X4 is a counter-anion). Also, the present invention provides a novel catalyst which can achieve excellent performance as a catalyst for asymmetric synthesis, especially asymmetric hydrogenation, in terms of chemical selectivity, enantioselectivity and catalytic activity, and the like.
摘要翻译:本发明的目的是提供由以下通式表示的铱络合物:[(I r H L1 L2)2(mu-X1)(mu-X2)(mu-X3)] X4(1)(其中L1 和L2可以相同或不同,并且各自表示单羟基中性配体,或者各自表示一个中性配位体,或者各自与另一个配位以形成双羟萘酸中性配体; X 1,X 2和X 3可以相同或不同,并且各自表示卤素原子; X 4 是抗衡阴离子)。 此外,本发明提供了一种新颖的催化剂,其在化学选择性,对映选择性和催化活性等方面可以获得作为不对称合成,特别是不对称氢化的催化剂的优异性能。
摘要:
A ligand represented by the formula (1): R1R2N-Q1-X-Q2-NR3R4 (1) wherein R1, R2, R3 and R4 are each the same or different and represent a group represented by the formula (2): wherein Q3 is an optionally substituted alkylene group, an optionally substituted cycloalkylene group, an optionally substituted arylene group, or an optionally substituted divalent heterocyclic group, R5 is an optionally substituted alkyl group, an optionally substituted aryl group or an optionally substituted heterocyclic group and R6 is a substituent which may coordinate or bind to a metal atom, or R5 and R6, taken together, may form a ring, Q1 and Q2 are each the same or different and represent an optionally substituted alkylene group or a single bond, and X is a divalent spacer.