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JP2000510139A |
PCT No. PCT/FR97/00803 Sec. 371 Date Jan. 19, 1999 Sec. 102(e) Date Jan. 19, 1999 PCT Filed May 6, 1997 PCT Pub. No. WO97/43231 PCT Pub. Date Nov. 20, 1997The invention features a useful method for the synthesis of fluorinated derivative...
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JP2000509384A |
Compounds containing a primary amino group are converted into compounds containing a fluorine atom in place of the amino group by reaction of the amino compound with hydrogen fluoride and a nitrosating reagent under the influence of ultr...
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JP2000154155A |
To obtain a new halogenating agent shown by a specific chemical structural formula, being readily recovered and reused, useful for producing an acid chloride by fixing a haloiminium salt skeleton into a polymer compound.This halogenating...
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JP2000506875A |
PCT No. PCT/EP97/01336 Sec. 371 Date Sep. 14, 1998 Sec. 102(e) Date Sep. 14, 1998 PCT Filed Mar. 17, 1997 PCT Pub. No. WO97/34872 PCT Pub. Date Sep. 25, 1997A process for preparing pyridyl-substituted N-phenylhydroxylamines by catalytic ...
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JP3049409B2 |
PURPOSE: To selectively and safely obtain a chlorinated product of an alkyl aromatic compound useful as an intermediate for herbicides, etc., by continuously circulating the alkyl-aromatic compound between a vessel and a photoreactor sup...
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JP2000143552A |
To produce an alkali fluoride having a fluorinating ability equal to or better than that of potassium fluoride conventionally used as a fluorinating agent and produced by a spray-drying method, e.g. the potassium fluoride. A fluorinating...
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JP2000506149A |
The production of fluorinated aromatic compounds of general formula (I), in which W, X, Z, R1 and R2 have the meanings given in the description, from corresponding C1 or Br-containing compounds with fluorides, e.g. KF, with halogen excha...
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JP3042703B2 |
A liquid phase process for making perfluorinated organic substances which comprises directly contacting in a temperature-controlled reactor a diluted solution or dispersion of a perfluorinateable, organic substance in a liquid, inert med...
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JP3032577B2 |
The present invention provides an efficient process for the production of ethylene or a mixture of ethylene and vinyl chloride, in which some 1,2-dichloroethane (EDC) may also be produced, by reacting chlorine with ethane. The process is...
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JP2000103747A |
To provide a means for efficiently producing a desired fluoride, especially a perfluoro compound in high yield by fluorinating a partially fluorinated organic compound and to provide a reactional apparatus therefor.A fluorine-containing ...
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JP2000103748A |
To safely hold an electrophilic fluorinating agent by holding the electrophilic fluorinating agent and a solvent having the compatibility with the above fluorinating agent in a vessel having a sealable orifice and capable of holding the ...
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JP2000063291A |
To provide a halogenation method for a hydroxy group-containing compound by using an organic solvent being readily handled without being accompanied with decomposition and having a slight influence on the environment. This halogenation m...
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JP2992334B2 |
There is provided a method of preparation of 2,4,5-tribromopyrrole-3-carbonitrile compounds in a single step from their 2-trihaloacetylpyrrole-4-carbonitrile precursors. The 2,4,5-tribromopyrrole-3-carbonitrile compounds are useful as mo...
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JP2988629B2 |
To obtain a new compound scarcely having possibility of destructive decomposition, almost free from producing a gaseous by-product in high ratio therewith and having effective fluorination ability and having higher heat stabil ity. This ...
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JPH11322639A |
To produce an ethylene derivative in high efficiency using a compound enabling extremely safe and easy production and use for reaction without necessitating particular apparatus and technique by reacting two specific kinds of compounds. ...
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JPH11322643A |
To obtain a chloroalkyne useful for production of alkynylamines economically and environmentally advantageously by reacting alkynyl alcohol and concentrated hydrochloric acid with a specific compound in the presence of a copper catalyst....
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JP2967168B1 |
To efficiently produce a perfluoro (secondary amino group-substituted acetyl fluoride) from an inexpensive and easily available compd. by using N-(2- hydroxyethyl)-tert-amine as the raw material and electrolytically fluorinating the amin...
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JPH11255678A |
To produce the subject conjugated diene useful as a synthetic raw material for medicines and agrochemicals, etc., in good selectivity by reacting a metalacyclopentadiene compound with a specific halogenating agent and then reacting the r...
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JP2947922B2 |
Good yields of a range of fluoroaromatic and fluoroheteroaromatic compounds may be obtained by reacting an aromatic or a heteroaromatic amine with a nitrosyl polyfluoro salt in an inert solvent to form an intermediate aryl or heteroaryl ...
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JP2945693B2 |
This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.
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JPH11217347A |
To obtain various kinds of fluorinated aromatic compounds by an industrially ready method improved in reaction time and space time yield, by reacting a specific compound with an alkali metal fluoride in the presence of a mixture of an al...
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JPH11209312A |
To inexpensively produce a halogenating agent useful for simply and efficiently halogenating an oxygen containing functional group by an ordinary apparatus by carrying out halogen exchange reaction of a specific amidium chloride compound...
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JPH11507938A |
PCT No. PCT/GB96/01355 Sec. 371 Date Dec. 12, 1997 Sec. 102(e) Date Dec. 12, 1997 PCT Filed Jun. 7, 1996 PCT Pub. No. WO97/00848 PCT Pub. Date Jan. 9, 1997A process for the preparation of an ester, especially fluorinated esters R1O.OC-CH...
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JPH11139996A |
To obtain the subject high-purity compound in a high yield without causing a side reaction, by carrying out the reaction between an aliphatic unsaturated compound and bromine in an inert solvent and removing a reaction heat out of the sy...
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JPH11130708A |
To provide a method for producing a monobromomethylated aromatic compound, capable of solving a problem that the selectivity of the monobromomethylated product is low by conventional methods, and capable of efficiently obtaining the mono...
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JP2883468B2 |
PURPOSE: To provide the subject chlorination method capable of providing reaction rate, yield and the like, equal to or better than that in the case of using carbon tetrachloride or the like as well as capable of improving the operation ...
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JPH1192409A |
To provide a method for the photochlorination of a methylbenzene compound, capable of controlling the production of by-products as much as possible and enabling the efficient production of a highly pure trichloromethylbenzene useful for ...
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JP2850907B2 |
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JP2847786B2 |
Aromatic, ring-fluorinated compounds are particularly advantageously prepared by nucleophilic exchange in the course of reaction wih potassium fluoride in the presence of phase transfer catalysts and, if desired, solvents by carrying out...
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JPH1112305A |
To obtain the subject material excellent in water repellency, oil repellency, antifouling property, etc., by reacting an OH group-containing material other than cellulose materials with a fluorine-containing olefinic compound, a fluorine...
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JP2847238B2 |
A process for the synthesis of fluorinated derivs. comprises a step in which a substrate is reacted with a cpd. comprising the association of a Bronsted base with a defined number (n) of HF species (n=3-20, pref. 15, and esp. 10). The su...
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JPH10513453A |
This invention relates to a method for preparing difluoromethyl ethers, thiols and amines without using chlorofluorocarbon gases. The intermediates prepared by this method can be used to make certain compounds which act as PDE IV inhibit...
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JP2834586B2 |
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JPH10324670A |
To selectively obtain the subject compound useful as an intermediate for microbicides in a high yield by chlorinating with a new chlorinating agent a 5-methylene cyclic carbamate obtained through two simple reaction routes, and subsequen...
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JP2823414B2 |
PURPOSE: To carry out chlorination of the side-chain methyl group of a 2-chloro- methylpyridine with chlorine in an industrially advantageous way without deactivation by adding an aqueous alkaline solution to the reaction system to neutr...
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JPH10298130A |
To profitably obtain a specific substituted 1-chloroalkene from a specified substituted alkene by using trichloroisocyanuric acid(TCIA). This α-chlorinated ketone of formula III is obtained by chlorinating a substituted alkene of formul...
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JPH10298153A |
To produce the subject high-purity compound useful as an intermediate, etc., for benzimidazoles, etc., which are phamacologically active compounds in high yield by reacting a specific compound with elementary bromine in the absence of N-...
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JPH10511310A |
PCT No. PCT/KR96/00213 Sec. 371 Date Sep. 23, 1997 Sec. 102(e) Date Sep. 23, 1997 PCT Filed Nov. 23, 1996 PCT Pub. No. WO97/18893 PCT Pub. Date May 29, 1997The present invention relates to a catalyst for preparing para-chloro aromatic co...
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JP2819028B2 |
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JP2812467B2 |
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JP2807780B2 |
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JPH10509718A |
A method of fluorination by reacting UF6 with a C2 to C8 alcohol, acids, esters, aldehydes or epoxides. The preferred reagent is a monohydroxyl or polyhydroxyl alcohol which does not form a chelate when reacted with UF6. The reaction is ...
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JP2790192B2 |
The present invention provides a process for preparing fluorinated compounds of general formulae: XH-Y-(CF2)n-CZ1Z2F (I) and YH-X-(CF2)n-CZ1Z2F (II) wherein: X and Y, different from each other, both represent Rx ,O,S, CFRx, C(Rx)2 or CF2...
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JP2784082B2 |
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JPH10204003A |
To produce a halogenated compound of high purity that has not been achieved by conventional methods from an active methylene compound with reduction of by-product formation in the halogenation. This production of a monosubstituted compou...
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JPH10506910A |
A preferred process for producing a brominated, non-fused aromatic composition involves a continuous bromination in a continuous, mixed reactor such as a continuous stirred tank reactor. Bromine and the aromatic substrate, and optionally...
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JPH10175883A |
To obtian an aromatic monobromomethyl compound useful as a raw material for medicines, dyestuffs, etc., in a high yield in a state little in the by-production of dibromo compound by brominating the benzyl position of an aromatic compound...
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JPH10175892A |
To obtain an aryl-substituted chlorinated hydrocarbon that is of high quality and useful as a cationic polymerization initiator in high yield through a simple process by allowing a specific aryl-substituted alcohol to react in the presen...
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JP2739763B2 |
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JP2738224B2 |
PURPOSE: To produce the 18F-labeled organic compound in a yield of ≥80% even when an ordinary glass reaction vessel is used. CONSTITUTION: 18F-containing water is thermally evaporation-dried in the presence of a macrocyclic polyether a...
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