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JP2831011B2 |
The hydroformylation of olefins with rhodium complex catalysts is described. The catalysts employed comprise a rhodium complex with at least one phosphine having a specified structure, e.g., tris(benzyl)phosphine. Preferred phosphines ha...
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JPH10316601A |
To carry out oxidation reaction effectively at high conversion rate on an industrial scale while suppressing the adhesion of a sublimable polycyclic hydrocarbon on a reactor and on the internal walls of tubes by using a specific mixed so...
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JP2812467B2 |
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JPH10279506A |
To obtain the subject compound without causing drain containing an ammonium salt, other salts and formaldehyde, by reacting a specific C-H-acid compound with formaldehyde. A C-H-acid compound of formula I (X1 and X2 are each an electron ...
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JPH10273455A |
To produce alcohols useful as a synthetic intermediate, etc., for medicines and agrochemicals by hydrogenating a carbonyl compound with hydrogen in the presence of a homogeneous hydrogenating catalyst, a base and a nitrogen-containing or...
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JPH10265436A |
To o produce a compound, having the p-position of the biphenyl ring selectively acylated in a Friedel-Crafts acylating reaction and useful as an intermediate raw material for liquid crystals, etc., by protecting OH group of a biphenyl co...
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JPH10265410A |
To obtain the subject compound in high conversion and selectivity from an acetylene derivative by reacting a specific alkinyl compound in the presence of a rhodium catalyst under an aqueous gas shift reaction condition. A compound of for...
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JP2804817B2 |
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JPH10251178A |
To enable the direct oxidation of a base in a high selectivity, a high conversion rate and a high productivity by carrying out the oxidation of the base with hydrogen peroxide in the presence of a specific catalyst system containing iron...
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JP2797464B2 |
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JPH10245373A |
To provide a method for oxidizing a corresponding benzo condensed heterocyclic compound containing at least one N atom in the presence of hydrogen peroxide, a Broensted acid and an iron compound in a method for preparing a heterocyclic o...
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JP2792046B2 |
Optically active hydroxybenzylamine derivatives of the Formula: wherein R<1> denotes a hydrogen atom, lower alkyl group or lower alkoxy group; R<2> denotes a lower alkyl group; * signifies an asymmetric carbon atom; and the hydroxyl grou...
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JPH10508594A |
A method for preparing carboxylic acids by carbonylating a reagent, particularly an alcohol, in the presence of a rhodium catalyst. According to the method, the liquid phase reaction is carried out in a first zone in the presence of a rh...
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JP2789735B2 |
PCT No. PCT/JP90/01488 Sec. 371 Date Jul. 15, 1991 Sec. 102(e) Date Jul. 15, 1991 PCT Filed Nov. 15, 1990 PCT Pub. No. WO91/07371 PCT Pub. Date May 30, 1991.The present invention relates to a method for the preparation of alpha , beta -u...
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JP2786300B2 |
Optically active S,S- or R,R-ss-amino alcohols are obtained according to the invention in high enantiomeric purity by stereoselective reduction of optically active S- or R-N-dibenzylated alpha -aminoketones with complex metal hydrides.
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JP2784824B2 |
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JPH10194999A |
To provide a process that enables the use of inexpensive titanium material or a titanium-palladium alloy as a material for the distillation column in order to subject the product liquid prepared by carbonylation reaction of a starting su...
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JP2777127B2 |
A process for the opening of the epoxide function of a (meth)acrylic epoxide of formula (V): in which: (i) the (meth)acrylic epoxide is reacted with a cpd. of etherate complexes and boron trifluoride, acid salts (in the presence of the c...
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JP2775319B2 |
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JPH10507156A |
A process for synthesizing enantiomerically pure chiral secondary alcohol compounds linked to a heterocyclic core moiety, using a natural chiral molecule starting material. The inventive process is particularly useful for bulk manufactur...
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JP2768946B2 |
A heat resistant noble metal catalyst having both superior heat resistant property and a remarkable high activity at any temperature ranges consisting of a composition having a formula A1-zCzBxDuA l 12-y-uO19- alpha , wherein A is at lea...
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JPH10158199A |
To convert a carboxylic acid compound into an ester derivative without using an iodine compound while suppressing the formation of quaternarized by-product by treating a cfarboxylic acid compound with a specific compound in the presence ...
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JP2763676B2 |
Process for the preparation of acetoacetates and other beta -ketoesters is provided, involving reaction of nitrogen, oxygen or sulfur nucleophiles with a tertiaryalkyl acetoacetate or tertiaryalkyl beta -ketoester.
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JP2760954B2 |
PURPOSE: To provide a process for producing a hydroxyl-containing vinyl compound in high yield and selectivity on an industrialscale at a low cost at a high reaction rate to complete the reaction in a short time compared with conventiona...
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JPH10139421A |
To provide the subject method which enables, in particular, the sol production process to be simplified by crystallizing at high temperature the effluent from the reaction of a mixture of tetraalkylorthosilicate and tetraalkylorthotitana...
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JPH10130195A |
To obtain a carboxylic acid or its salt useful as a surfactant, etc., by oxidizing a primary hydroxyl group-having compound with a specific oxidizing agent in the presence of a specified amine in a high yield and in a good selectivity. T...
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JPH10128922A |
To form panels with an excellent break resisting property relative to breakdown and/or an improved mechanical property. The plate is that when measured by an ISO 527 standard for a plate or film installed in a panel, it has a smooth or m...
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JPH10504307A |
The present invention relates to an improved process for the in situ preparation of diisopinocampheylchloroborane which comprises reacting sodium borohydride and boron trichloride with alpha -pinene. The diisopinocampheylchloroborane thu...
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JP2741069B2 |
This invention relates to a method for manufacturing aromatic compounds having the following formula (II) comprising the step of reacting an unsaturated aromatic compound having the following formula (I) with an aryl compound containing ...
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JP2739265B2 |
PURPOSE: To readily and safely produce the subject amino alcohols in high yields with economical advantage. CONSTITUTION: A method for producing an amino alcohol by reducing an amino acid derivative using (a) a metal borohydride in combi...
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JPH10503776A |
PCT No. PCT/EP95/03022 Sec. 371 Date Feb. 3, 1997 Sec. 102(e) Date Feb. 3, 1997 PCT Filed Jul. 29, 1995 PCT Pub. No. WO96/05184 PCT Pub. Date Feb. 22, 1996Saccharincarboxylic acids and -carboxylic acid esters of the formula I I where the...
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JP2734646B2 |
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JP2734647B2 |
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JPH1080640A |
To safely, easily and repeatedly use an amine oxidant used as an oxidation catalyst in the oxidation reaction of primary hydroxyl groups in an org. compd. by allowing the amine oxidant as a catalyst, used for oxidation reaction of an org...
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JP2733328B2 |
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JP2731377B2 |
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JP2718346B2 |
PURPOSE: To provide continuous production method of slightly soluble reactional products such as terephthalic acid or naphthalenedicarboxylic acid adhering to a container wall, etc., by readily and accurately detecting liquid height in a...
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JPH1045671A |
To provide a continuous ester-formation process for a thermally unstable acid by esterifying the acid with an alcohol, if necessary, in the presence of a catalyst. The esterification reaction is carried out in substantially only one reac...
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JPH1045657A |
To provide a method for producing an acetal compound, enabling to easily obtain the compound in a mild condition by subjecting a carbonyl compound, etc., and a hydroxy group-containing compound, etc., to an acetal- forming reaction in th...
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JP2712019B2 |
Process for the preparation of alpha,beta-olefinically unsaturated compounds by means of carbonylation of acetylenically unsaturated compounds with carbon monoxide in the presence of a hydroxyl-containing compound in the liquid phase, ca...
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JPH1025267A |
To obtain the subject high-purity compound by reacting an alkali metal salt or an organic amine salt of a carboxylic acid derivative with a polyvalent metal compound under specific conditions. A polyvalent metal compound is fed to a mixi...
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JPH101455A |
To provide a method for continuously producing a (meth)acrylic acid alkyl ester, slightly causing ether of a by-product and high boiling point material in high space time yield and provide an apparatus therefor. (Meth)acrylic acid is rea...
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JP2693287B2 |
PURPOSE: To epoxidize unsatd. (meth)acrylate by allowing the compd. to react with hydrogen peroxide in the presence of a catalyst or to react with an oxidizer in the presence of heteropolyacid as the case may be. CONSTITUTION: An unsatd....
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JPH09328448A |
To obtain a carboxylic acid useful as a basic raw material for organic compounds, by hydrolyzing a carboxylic acid amide in the presence of a carboxylic acid having specific acid strength. A carboxylic acid amide is hydrolyzed in the pre...
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JPH09323953A |
To provide a process enabling the conversion of a monocarboxylic acid and/or monocarboxylic acid anhydride to the corresponding acid chloride even in the absence of catalyst. A monocarboxylic acid and/or monocarboxylic acid anhydride are...
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JP2689412B2 |
PURPOSE: To provide a method for removing a protecting group in which a tri-substituted silyl group can efficiently be removed under mild conditions and the objective compound can be obtained in high yield at a low cost. CONSTITUTION: Th...
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JPH09512246A |
Vanadium-containing Beta zeolite, and its use as catalyst in organic reactions.
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JP2682129B2 |
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JPH09295948A |
To obtain a fluorine-containing compound useful as a synthetic intermediate for a medicine, a chemical or a functional material, by carrying out the functional replacement reaction of an α-perfluoroalkylated alcohol derivative, which ha...
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JP2667141B2 |
Ketones or aldehydes containing one or more carbon-carbon double bonds and a carbonyl group conjugated with at least one double bond are hydrolyzed by the action of heat and pressure in the presence of water by a batch or continuous proc...
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