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JPH058176B2 |
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JPH055815B2 |
A process is disclosed, for the manufacture of carbonylated products and/or olefins by reacting hydrocarbons with carbon monoxide in the presence of a transition metal complex, under irradiation with light.
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JPH053858B2 |
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JPH04507404A |
A stable 1,2-dioxetane of the formula: where R1, R2, and R3 are passive organic groups that allow the dioxetane to decompose and produce light when Z and Y are removed, with the proviso that R1 and R2 may be joined to form a cyclic moiet...
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JPH0480011B2 |
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JPH0475207B2 |
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JPH0473421B2 |
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JPH04334338A |
PURPOSE: To advantageously obtain an alkoxylated aromatic compd. from a mono- or polyhalogenated aromatic compd. and an alkaline (earth) metal alcoholate without using a methyl formate which is volatile at room temp. and is not easily ha...
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JPH04334337A |
PURPOSE: To obtain a polyalkoxy aromatic compd. in simplified processes without requiring neutralization, without hazard of explosion, and without production of dimethylether in a reaction solvent compared to a conventional method which ...
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JPH0470943B2 |
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JPH0469131B2 |
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JPH04290833A |
PURPOSE: To safely obtain a high-quality melt product by subjecting an aromatic compound to alkali fusion by a common reactor industrially and economically without using a specific device while improving fluidity of melt and reducing an ...
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JPH04290841A |
PURPOSE: To produce arom. ketone in an efficient and profitable manner and to reutilize a catalyst and a solvent by acylating an arom. reactant with boron trifluoride as the catalyst in the solvent of anhydrous liq. sulfur dioxide. CONST...
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JPH04283526A |
PURPOSE: To obtain the subject compound having high optical purity and useful as a synthetic intermediate for phramaceuticals and agricultural chemicals by reacting an optically active silyl-substituted epoxy compound with an active meth...
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JPH0457650B2 |
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JPH04221341A |
PURPOSE: To produce a carboxybiphenyl compound in a high yield by oxidizing the corresponding acylated biphenyl compound under a profitable condition. CONSTITUTION: An acylated biphenyl compound is oxidized with molecular oxygen (air) in...
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JPH0449529B2 |
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JPH04504267A |
PCT No. PCT/EP90/02263 Sec. 371 Date Aug. 16, 1991 Sec. 102(e) Date Aug. 16, 1991 PCT Filed Dec. 21, 1990.Continuous process for the telomerization of conjugated dienes comprising reacting a conjugated diene with a compound containing an...
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JPH0446245B2 |
A process for converting an aromatic compound to prepare an iodoarene, Ar-I, and an aryl compound in which an unsaturated compound is bonded directly to an aryl group, Ar, which process comprises reacting a diaryliodonium salt represente...
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JPH0441130B2 |
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JPH04180837A |
PURPOSE: To effectively utilize a catalyst even in the presence of water as a liquid by subjecting the surface of a solid acid catalyst to hydrophobic treatment using an organosilicon compound. CONSTITUTION: The surface of a solid acid c...
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JPH0435224B2 |
Catalysts comprising mixtures of HF and metal alkoxides and mixed metal alkoxides produce a sharply peaked alkoxylation distribution during the alkoxylation of organic materials.
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JPH0434529B2 |
A process for the preparation of esters or salts of aromatic or etheroaromatic acids of formula Y-Ar-CO-OR (I), where:… Ar represents an aromatic group constituted by one or more benzene rings, optionally condensed, or an etheroaromati...
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JPH0434531B2 |
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JPH0429647B2 |
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JPH0425272B2 |
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JPH04108740A |
PURPOSE: To obtain an alcohol in high selectivity useful as synthetic intermediate, for plant protective derivatives, by reacting an epoxide with a nucleophilic compound containing a labile hydrogen in the presence of a specific metal co...
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JPH04108751A |
PURPOSE: To profitably produce the subject compound in high yield by oxidizing 2,6-diisopropyl naphthalene with molecular oxygen in the presence of an aromatic heterocyclic compound containing a nitrogen atom as a hetero atom in the mole...
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JPH0412246B2 |
A process for oxidizing an organic compound by ceric sulfate dissolved in an aqueous sulfuric acid solution, wherein the organic compound is oxidized (1) by means of a ceric sulfate-aqueous sulfuric acid solution or a cerous sulfate-cont...
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JPH0436250A |
PURPOSE: To readily and selectively obtain aldehydes and alcohols by dissolving a nitrile in water or a water-containing organic solvent, adding a hydrogenation catalyst thereto and reacting hydrogen therewith at the ordinary temperature...
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JPH0421638A |
PURPOSE: To provide a selective catalyst effectively used in a vapor phase catalytic hydrogenation of a bound oxygen-containing organic compound, by heating and reducing a precursor catalyst including an uniform mixture comprising Cu, Al...
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JPH049350A |
PURPOSE: To carry out the acylation or alkylation reaction of an aromatic compound with industrial advantages such as free from the safety problems and the easy post-treatment of the reaction product by using trichlorobenzene as a reacti...
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JPH03506040A |
Pharmaceutical preparation consisting of one or more active ingredients and an excipient which solidifies at temperatures between 20 and 80 DEG C and is water soluble, characterized in that it is an isotropic solution in which a) the act...
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JPH03261728A |
PURPOSE: To obtain an corresponding carboxylic acid of high purity without a side reaction by hydrolyzing an unstable carboxylic acid ester such as an amino acid ester or an unsaturated fatty acid ester in the presence of a tertiary amin...
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JPH0369897B2 |
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JPH0365335B2 |
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JPH03504495A |
Chemical reactions are readily carried out using supercritical carbon dioxide as the reaction medium. Supercritical carbon dioxide is of special value as a reaction medium in reactions for synthesizing polypeptides, for sequencing polype...
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JPH03504500A |
A ruthenium catalyzed method to synthesize cyclic sulfate compounds from the corresponding cyclic sulfites, and the cyclic sulfate reaction products obtained by this method. These cyclic sulfates further react with selected nucleophiles ...
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JPH0363540B2 |
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JPH03209344A |
PURPOSE: To obtain the subject compd. active as a pharmaceutical agent in a high optical yield and with a high optical purity from a enantiomer of a carbinol obtained by reacting an asymmetric ketone with a stereospecific reagent in the ...
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JPH03206058A |
PURPOSE: To efficiently produce the subject compound under an extremely modest condition by bringing a silyl peroxide into contact with water and/or a specific alcohol in the presence of an acid catalyst to obtain a hydroperoxide and red...
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JPH0358777B2 |
Catalysts and a method of using said catalysts for the alkoxylation of a variety of materials is disclosed. Catalysts so described produce alkoxylates having a very sharp alkoxylate distribution. The catalysts are supported and unsupport...
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JPH0357088B2 |
1. A process for the preparation of aryl esters of organic carboxylic acids in isomeric purity comprising decomposing a compound of the general formula Ar-TIXY wherein Ar is a mono- or polycyclic aryl radical or a mono- or polycyclic het...
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JPH03190848A |
PURPOSE: To easily and economically prepare the titled compound effectively used for preparing the medical drugs, in a high yield without causing the problems of polluted sewage on, by directly reacting substituted β-amino-styrene with ...
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JPH0353974B2 |
Catalysts producing a sharply peaked alkoxylation distribution during the alkoxylation of organic materials comprise mixtures of BF3 and metal alkyls or metal alkoxides, SiF4 and metal alkyls or metal alkoxides, or mixtures of these cata...
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JPH03184924A |
PURPOSE: To esterify an α-amino-protected amino acid, by esterfying an α-amino- suitably protected amino acid in an aprotic and non-basic solvent in the presence of 2,4,6-mesitylene-1-sulfonyl-3-nitro-1,2,4-triazolide and a weak base. ...
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JPH03178977A |
NEW MATERIAL: A compound of formula I (R1 is a halogen, OH, methoxy or propylthio; R2 is H or acetyl). USE: Antiinflammatory agents or immunosuppressants. PROCESS: A triptolide of formula II is reacted with a compound of formula R1-H and...
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JPH0348175B2 |
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JPH03167147A |
PURPOSE: To obtain the subject compounds in high yield by mixing a metal phenolate corresponding to the objective compounds with a dibromodifluoromethane or bromochlorodifluoromethane and an aprotic polar solvent and subsequently adding ...
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JPH03167150A |
PURPOSE: To efficiently and safely obtain the subject compounds useful as an intermediate for medicines, agricultural chemicals, perfumes, etc., in one stage by bringing a silane derivative into contact with a chain acetylene and an oxyg...
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