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JPH02262529A |
PURPOSE: To economically obtain the subject substance useful as a synthetic intermediate, etc., for surfactants, agricultural chemicals, medicaments, etc., from readily available raw materials in high yield by thermally reacting a perflu...
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JPH02262528A |
PURPOSE: To economically obtain the subject substance useful as a synthetic intermediate for surfactants, agricultural chemicals, medicaments, etc., X-ray contrast media, fluorocarbon-based fire extinguishers, etc., in high yield by ther...
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JPH02258731A |
PURPOSE: To obtain a nitrogen-containing heterocyclic compd. easily and efficiently substd. by Cl or Br by halogenating an OH of a nitrogen-containing heterocyclic starting material of which the ring upper position adjacent to a ring nit...
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JPH0246015B2 |
1. 2,4,5-Trihalogeno- and 2,3,4,5-tetrahalogenobenzene derivatives of the formula (1) see diagramm : EP0164619,P24,F1 in which R represents-COOH, -COCI, -COF, -CN, -CONH2 , -CH2 OH, -CH2 CI, -CHCI2 , -CCI3 or -CHO , R**1 represents CI or...
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JPH0233020B2 |
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JPH02187150A |
PURPOSE: To accelerate selective chlorination reaction and oxychlorination reaction by depositing a catalyst material on a monolithic carrier which has lots of passages arranged parallel to the axial line in the longitudinal axial direct...
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JPH0232262B2 |
Selective chlorination, using gaseous chlorine, of phenolic compounds, in an ortho position relative to the hydroxyl functional group. More precisely, a process for the selective chlorination in an ortho position relative to the hydr...
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JPH0229658B2 |
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JPH02117626A |
PURPOSE: To obtain the subject apparatus, containing a dehydrofluorinating agent, such as sodium fluoride or potassium fluoride, having reactivity with hydrogen fluoride in the interior of a reactor for fluorination and capable of preven...
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JPH02117624A |
PURPOSE: To obtain a novel fluorinating agent for carrying out substitution of chlorine in an organic chlorine compound of fluorine compound or addition of fluorine to an unsaturated compound at a high level of substitution in high yield...
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JPH0211571B2 |
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JPH024580B2 |
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JPH024719A |
PURPOSE: To brominate a substrate by introducing hydrogen peroxide into a two-phase system consisting of an alkylarene substrate org. phase which may contain an org. solvent and an aq. phase containing hydrogen bromide and irradiating th...
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JPH024720A |
PURPOSE: To enhance the selectivity of dibromide by stirring a dilute soln. of an alkylarene substrate dissolved in a non-reactive org. solvent along with an aq. phase containing hydrogen bromide and introducing H2O2 into the stirred sol...
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JPH021704A |
PURPOSE:To obtain the subject compound useful as a raw material for agricultural chemicals, etc., in a short time in high yield under a mild condition by reacting a specific halogenated aromatic compound with an alkali metal fluoride in ...
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JPH02715A |
NEW MATERIAL: Compounds expressed by formula I (R1-R5 are H, 1-6C alkyl which can be perfluorinated, halogen, 1-6C alkoxy, 1-6C alkylthione, three or less of R1-R5 are group excluding H, Y is H, CnF2n+1; X is Br, I; Alkyl is 1-3 alkyl). ...
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JPH0160458B2 |
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JPH0160012B2 |
Trichloromethyl-substituted aromatic compounds are obtained by the chlorination of thioethers of the formula wherein Ar represents an optionally substituted aryl radial, X1 denotes hydrogen or halogen, and R1 represents optionally substi...
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JPH01304044A |
PURPOSE: To enhance catalytic activity under a low temp. condition, by forming a halogen exchange catalyst by supporting a copper ion by anionic clay mineral wherein a specific halogen anion is present in an anion exchange site. CONSTITU...
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JPH0155252B2 |
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JPH0155253B2 |
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JPH01283230A |
PURPOSE: To industrially obtain the aimed compound in good yield and high purity by carrying out a diazotization reaction of an aromatic amino compound in the presence of anhydrous hydrofluoric acid using an alkyl nitrite in producing th...
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JPH01503066A |
The process relates to a process for the vapor phase bromination of aromatic compounds in the presence of oxygen and a catalyst comprising an oxidizing metal and an inert support.
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JPH01261339A |
PURPOSE: To obtain fluoroaromatics with high quality in high yield by diazotizing an aromatic amine in the presence of HF and decomposing the obtd. aryl diazonium fluoride. CONSTITUTION: An aromatic amine (such as aniline) is allowed to ...
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JPH0145456B2 |
Alpha-chlorinated cumene derivatives are prepared by chlorinating cumene derivatives in the presence of light. The chlorination may be taken to 100 percent conversion when performed in a solvent, e.g., m-dichlorobenzene.
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JPH01502819A |
A process for iodinating an aromatic compound in which a source of iodine is reacted with the aromatic compound in the presence of oxygen over a non-acid catalyst wherein the aromatic compound has a fluoro, chloro, bromo, iodo, hydroxy o...
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JPH01233232A |
PURPOSE: To obtain the title compound which is used as an intermediate of medicines and agrochemicals, by allowing an organic base hydrofluoric acid salt and a nitrous acid donor to react with an aromatic compound bearing a hydroxyl grou...
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JPH01210403A |
PURPOSE: To obtain the title deriv. being useful for a fluorination catalyst which can give efficiently an arom. fluorinecompd. for a short time from an easily available halogenated arom. compd. as a raw material, by reacting a divinylbe...
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JPH01159390A |
PURPOSE:To remarkably reduce the loss of HF by bringing gas contg. HF exhausted from a reactor into contact with a basic org. compd. as starting material to be fed to the reactor in a contact vessel. CONSTITUTION:A basic org. compd. cont...
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JPH0127051B2 |
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JPH01132572A |
Compounds of formula I (I) wherein R1, R2, R3 and R4 are H, alkyl or aryl, m and n are 0 or 1, and A is a divalent organic radical which, with (CR1R2)mNF-SO2(CR3R4)n groups, forms a 5- to 8-membered ring, are admirably suitable fluorinat...
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JPH0118060B2 |
A process for the preparation of an aromatic trifluoromethyl compound which comprises contacting an aromatic compound of the formula wherein R1 denotes hydrogen, alkyl, aryl, aralkyl, aryloxy, arylthio, polyhalogenoalkoxy or polyhalogeno...
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JPH0115515B2 |
Novel thiazolineazetidinone vinyl halides useful in the preparation of certain cephem antibiotics are described. They are of the formula wherein X is chloro or bromo; R10 is hydrogen or a carboxylic acid protecting group; and R5 is (a) h...
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JPH0115487B2 |
1. Process for preparing aromatic fluorinated compounds of formula ArF, in which Ar denotes an aromatic radical, of the type according to which an amine of formula ArNH2 is subjected to a diazotization reaction with sodium nitrite in HF,...
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JPS6471824A |
PURPOSE: To obtain an aromatic fluoride safely and in high yield, by reacting an aromatic diazonium halogenoborate with hydrogen fluoride or hydrogen fluoride and a base under light irradiation. CONSTITUTION: An aromatic diazonium haloge...
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JPS6463540A |
PURPOSE: To obtain a noncondensed polyaromatic compd. which is partially brominated exclusive of polyphenylene ether at a high selection rate by brominating the polyaromatic compd. in the presence of a zirconium halide catalyst at a spec...
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JPS6456633A |
PURPOSE: To swiftly obtain the material by simple operation in high yield by bringing bromine to react with 1,5,9-cis, trans, trans-cyclododecatriene in a solvent and then bringing this reaction mixture to contact with ammonia. CONSTITUT...
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JPS6445321A |
PURPOSE: To obtain an organo-fluorine compound in high yield and at low cost in fluorinating a halogenated organic compound containing a halogen atom except fluorine with an alkali fluoride, by carrying out the reaction in the presence o...
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JPS649296B2 |
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JPS6425736A |
PURPOSE: To obtain a corresponding halogen compd. and ester at a high selection rate by bringing an aliphat. ether having halogen atoms in a beta-position to oxygen atoms into contact with an acid halide in the presence of a Lewis acid c...
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JPS64363B2 |
Cyclopropanecarboxylic acid derivs. of formula (I) and their functional derivs. are new. In (I), X1 is H, F, Cl or Br; X2 is F, Cl or Br; and X3 is Cl, Br or I. (I) have fungicidal properties and are partic. suitable for combatting phyto...
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JPS6365051B2 |
A process for producing an aromatic chlorine compound of the following formula II, which comprises substituting chlorine for the nitro group of an aromatic nitro compound of the following formula I with chlorine gas in the substantial ab...
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JPS6353997B2 |
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JPS63253034A |
A process for the preparation of a phosphorus complex corresponding to the following general formula: wherein R represents optionally substituted aryl, wherein the substitution may comprise at least one selected from nitro, chloro, fluor...
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JPS6352611B2 |
A process for the preparation of an optionally substituted trifluoromethyl-naphthalene which comprises contacting a compound of the formula (I) in which R1 denotes hydrogen, alkyl, aralkyl, aryl, aryloxy, arylthio, polyhalogenoalkoxy, po...
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JPS6351128B2 |
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JPS63243037A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS63215643A |
A highly selective bromination process is described, by means of which substantially pure p-bromophenols can be obtained, by brominating a phenol derivative, for example a compound of the formula: wherein R1 is hydrogen, alkyl, aryl, alk...
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JPS63502276A |
PCT No. PCT/US86/02831 Sec. 371 Date Feb. 9, 1987 Sec. 102(e) Date Feb. 9, 1987 PCT Filed Dec. 30, 1986 PCT Pub. No. WO87/04149 PCT Pub. Date Jul. 16, 1987.N-secondary-alkyldiorganoaminopyridinium salts are disclosed which are useful as ...
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JPS63502278A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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