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JPH06263724A |
PURPOSE: To obtain new monofluoro-β-lactams, useful as an intermediate for physiologically active substances such as medicines or agochemicals, functional polymers, etc., according to a new method for directly fluorinating β-lactams. C...
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JPH06247930A |
PURPOSE: To chlorinate in a high yield a pyrrole compound having an electron- attractive group. CONSTITUTION: A pyrrole compound having at least one electron-attractive substituent and at least one hydrogen or a bromine substituent is al...
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JPH06237999A |
PURPOSE: To facilitate the formation of an injectable halogen aromatic contrast medium and a radioactive halogenated aromatic diagnostic medium by sucking a composition obtained by a reaction under the presence of more than one reducing ...
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JPH06234667A |
PURPOSE: To obtain an aromatic bromomethyl compound in extremely pure form which is a useful intermediate in the synthesis of active substances. CONSTITUTION: A method characterized by using chlorobenzene as a solvent in preparatioh of a...
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JPH06234666A |
PURPOSE: To obtain the subject halogenated compound useful as an intermediate for medicines, agrichemicals, photographic chemicals, etc., improved in purity, yield and environmental pollution by reacting an activated methylene compound w...
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JPH06228042A |
PURPOSE: To prepare a fluorinated benzil containing a new compound in high yield and at low cost using easily available raw materials. CONSTITUTION: The compound of formula I [with the proviso that at least one of X1 to X6 is F, X1 to X6...
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JPH06228025A |
PURPOSE: To obtain 1,3-difluorobenzene in high yield and high purity by reacting 1,3-difluorohalobenzene with hydrogen in the presence of a Pd catalyst and an amine or a mixture of amines at increasing temperature and pressure. CONSTITUT...
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JPH0657314B2 |
The invention relates to a device for fixing tubes passing through a wall, more particularly tubes of glass or quartz containing ultraviolet emitters and entering a pressure reactor in which radical chlorination processes are performed. ...
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JPH06211700A |
PURPOSE: To provide a method for performing a radiographic assay of a warm- blooded animal by using a radioactive halo-aromatic diagnostic agent that can be prepared in a good yield. CONSTITUTION: The diagnostic agent (diagnostic composi...
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JPH06210180A |
PURPOSE: To smoothly effect such an org. chemical reaction as nucleophilic substitution reaction and condensation reaction which are usually difficult under normal conditions by using alkylated cyclic inulooligosaccharide obtd. by alkyla...
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JPH06211698A |
PURPOSE: To produce a halogenated arom. contrast medium compsn. in a high yield. CONSTITUTION: This contrast medium compsn. is an iodine-contg. contrast medium compsn. contg. a medicinally acceptable liq. blend and/or one or more kinds o...
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JPH06199704A |
PURPOSE: To provide a kit capable of easily producing a radioactive halogenated arom. diagnostic agent. CONSTITUTION: This kit includes bromine or iodine substd. arom. or heteroaromatic compd., water-soluble acid, copper salt and, in som...
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JPH0651644B2 |
The process of the invention for brominating alcohol is characterised in that it comprises the following stages: - the alcohol is brought into contact with at least one reactant chosen from thionyl chloride, phosgene and phosphorus oxych...
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JPH06184045A |
PURPOSE: To easily obtain a 3- or 5-fluoroaromatic compound by allowing an aromatic compound having an electron-attractive group at 1-position and electron-donating groups at 2- and 4-positions to react with fluorine in an inert gas. CON...
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JPH0643401B2 |
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JPH06157357A |
PURPOSE: To introduce a fluoro substituent into an aromatic ring next to an electron donating group in high yield. CONSTITUTION: A 3-fluoro aromatic compound is prepared by reacting an aromatic compound having an electron-accepting group...
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JPH06145073A |
PURPOSE: To obtain a dichlorinated compound by reacting an olefin compound with hexachloroethane in the presence of a metallic catalyst, thereby selectively dichlorinating the double bond of the olefin compound. CONSTITUTION: The compoun...
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JPH0637400B2 |
The present invention is directed to a method for replacing a carboxylic acid group with a fluorine group in a halogenated aliphatic carboxylic acid compound having the formula, R-COOH, to prepare a fluorinated product having the formula...
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JPH0637399B2 |
PCT No. PCT/EP86/00086 Sec. 371 Date Sep. 30, 1986 Sec. 102(e) Date Sep. 30, 1986 PCT Filed Feb. 12, 1986 PCT Pub. No. WO86/04893 PCT Pub. Date Aug. 28, 1986.Preparation of alkyl fluoride by replacement of an aliphatic hydroxy group with...
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JPH06135869A |
PURPOSE: To obtain the subject compound useful as a synthetic raw material for pharmaceuticals and agrichemicals, a liquid crystal material and a photoresist in high yield and selectivity by reacting a fluoride ion source with a specific...
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JPH0629399B2 |
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JPH0627079B2 |
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JPH0625075B2 |
Compounds halogenated in the alpha -position to an electron-attracting group of formula (I) in which X denotes a halogen atom, R denotes a hydrogen atom or a hydrocarbon radical or a radical -(CH2)3-COOR1 and Z denotes a radical -CHO, -C...
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JPH0625117B2 |
A novel process for chlorinating 2-methoxynicotinic acid at the 5-position of the molecule is disclosed. The process involves the use of an alkali metal hypochlorite as the chlorinating agent in a homogeneous aqueous solvent system. The ...
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JPH0672901A |
PURPOSE: To efficiently produce a hydroxymethylaromatic compd. without producing undesirable by-products by reacting activated aromatic molecules with formaldehyde in a carboxylic acid in the presence of an acid catalyst. CONSTITUTION: A...
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JPH0617318B2 |
Organoborane compounds are halogenated by reacting an organoborane with iodinemonochloride, brominemono-chloride or a halide salt in the presence of a mild oxidizing agent.
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JPH0648991A |
PURPOSE: To selectively and efficiently prepare the compound in one step reaction by carrying out selective nucleophilic fluorodenitration of specified nitrobenzene derivative with potassium fluoride in a dipolar aprotic solvent in the p...
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JPH0611719B2 |
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JPH0611718B2 |
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JPH0640969A |
PURPOSE: To efficiently prepare fluorobenzene having antibacterial activity and useful as an intermediate for the preparation of a medicine based on a quinoline structure in a high yield by reacting a specified fluoronitrobenzene with a ...
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JPH0640951A |
PURPOSE: To prepare perfluorinated and partially fluorinated functional compds. such as perfluorinated and partially fluorinated carboxylic acids, esters, ketones, alcohols, amides, carboxylic acid fluorides and their derivs. CONSTITUTIO...
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JPH0625130A |
PURPOSE: To obtain a halogenophenoxy fatty acid derivative (some of which are new compounds) useful as an intermediate for pharmaceuticals, pesticides, chemicals, etc., in high yield without using catalyst, etc., by halogenating a specif...
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JPH062681B2 |
The substitution chlorination reactions of organic compounds are carried out by means of molecular chlorine, using, as a radical initiator, decachlorobutane or an octachlorobutane such as octachlorobut-1-ene or a mixture containing these...
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JPH0588691B2 |
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JPH05339173A |
PURPOSE: To provide a chlorination agent capable of facilitating the supply of chlorine, reducing the amount of chlorine and safely proceeding the chlorination reaction. CONSTITUTION: The objective chlorination agent is produced by disso...
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JPH0586767B2 |
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JPH0586768B2 |
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JPH0586769B2 |
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JPH0586770B2 |
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JPH0584290B2 |
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JPH05271125A |
PURPOSE: To selectively obtain a brominated deactivated toluene that prevents side reaction and is useful as an intermediate of a photoacid generator by selectively monobrominating the benzyl position of deactivated toluene and easily ma...
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JPH05246912A |
PURPOSE: To obtain a brominated non-condensed ring polyaromatic compd. with a low m.p. range and a low amt. of light end impurites, by brominating a non-condensed, polyaromatic compd. CONSTITUTION: To a reacter contg. a reactant consisti...
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JPH0564131B2 |
Aromatic compounds which contain perfluorinated side-chains bonded via a heteroatom are prepared by treating aromatic compounds, which contain side-chains which are perhalogenated, but only partially fluorinated, and bonded via heteroato...
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JPH0557972B2 |
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JPH0557971B2 |
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JPH0555488B2 |
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JPH05505184A |
Aromatic amine compounds are halogenated in the presence of a quaternary ammonium halide.
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JPH0551569B2 |
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JPH05132474A |
PURPOSE: To produce in a high yield 2-chlor5-methythio1,3, 4-thiadiazole useful as an intermediate for an insecticide, a herbicide, etc. by allowing mercapto methylthio thiadiazole to react with phosgene in the presence of a catalyst wit...
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JPH05132446A |
PURPOSE: To obtain a βhalogenotert.-alkyl carboxylic acid chloride useful as an intermediate for a rubber additive or an intermediate for a herbicide by a novel method for allowing a tert-alkyl carboxylic acid chloride to react with ele...
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