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JP3533126B2 |
To provide a method for efficiently, economically and industrially producing useful fluorine-substitued aromatic compounds, for example, a substituted fluorobenzene, fluorine-substituted benzophenone or fluorine- substituted diaryl sulfo...
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JP2004123605A |
To provide a method for highly selectively, efficiently and safely advancing the fluorination reaction of a desired substrate.This fluorination method comprises reacting a specific fluorine compound such as N, N-diethyl-α, α-difluoro-(...
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JP2004509086A |
A process is provided for the fluorination of an aromatic fused ring compound which comprises treating the compound with fluorine. A preferred process involves treating a solution of a naphthalene compound in an inert solvent with elemen...
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JP2004505893A |
The invention concerns quaternary ammonium compounds whereof the nitrogen bears a fluorine atom. Said ammonium compounds have an asymmetric carbon atom which is spaced from the ammonium function by not more than five members. The inventi...
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JP2004503515A |
A process is provided for increasing the fluorine content of benzene or pyridine rings which are optionally substituted with from 1 to 3 inert substituents. The process involves (a) contacting the ring with a metal fluoride composition c...
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JP3488930B2 |
PURPOSE: To industrially advantageously obtain chloromethylpyridines useful as intermediates for preparing insecticides by reacting a specific aminomethylpyridine with a nitorosating or diazotizing agent in the presence of a diluent and ...
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JP2004500323A |
The invention concerns a halogenation in position meta of a phenol fuction. Said halogenation comprises a step which consists in halogenating an aromatic derivative of a medium or advantageously strong acid, the aromatic radical being a ...
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JP2003321406A |
To provide a method for producing a fluoroalkylbenzene derivative useful as a functional chemical intermediate for a medicine, an electronic material, etc., having reduced contents of residual halogens and residual metals being impuritie...
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JP2003321425A |
To provide a practicable method for producing a fluorine compound by the few number of steps by which the fluorine compound can be produced industrially and inexpensively by carrying out a fluorination reaction of a substrate by using an...
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JP2003531131A |
Novel techniques are disclosed for the direct fluoridation of organic compounds by treatment with fluorine gas in a reaction mixture comprising hydrofluoric acid and at least one of water and formic acid. The techniques are particularly ...
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JP2003286207A |
To provide a method for industrially and advantageously producing different two kinds of high-purity hydrofluorocarbons (HFCs) usable as a refrigerant.The method for producing the HFCs comprises the following steps. A step (A) of reactin...
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JP2003526691A |
Polymer/support solid phase reactants (I) comprise a fine particulate polymer of bonded particles having a diameter of 0.001-50 microns to which organic reactants are bound in the pores of a porous support having pore diameters of 0.1-20...
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JP2003525204A |
The invention relates to a method for carrying out an SNAr-type nucleophilic substitution on an aromatic substrate, characterized in that an aromatic substrate of general formula (I), wherein A represents an aromatic residue motif, X rep...
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JP2003522743A |
The invention concerns a method for functionalizing a double bond and, more particularly, a double bond bearing a metalloid atom. Said functionalization is produced by the action of perhalogenated sulphonyl chloride on the carbon bearing...
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JP2003512926A |
Ionic liquids are immobilized on a functionalized support which carries or contains one component of the ionic liquid, or a precursor to such a component. The ionic liquid may be immobilized via the anion by treating a support with an an...
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JP2003101922A |
To provide a camcorder which can surely and easily write a still image at a recording start, quickly displays the still image at the recording start to be able to smoothly perform contents confirmation work in confirming contents of a vi...
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JP2003512342A |
The present invention provides a method of selectively fluorinating a carbon-hydrogen bond at an unactivated saturated sp<3> hybridised carbon atom of an organic compound, the method including reacting the organic compound with elemental...
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JP3390992B2 |
PURPOSE: To obtain a chlorinated product in an exceedingly high yield time-wise and space-wise without using a solvent or in a high concentration in a solvent, by allowing an aryl ether to react with chlorine which is metered into a reac...
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JP2003089663A |
To provide a method for producing a highly pure perfluoro organic bromide from an easily available raw material by an easy process.The perfluoro organic bromide expressed by RfBrn such as CF3(CF2)7Br, or the like, is produced by reacting...
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JP2003510298A |
The present invention relates to processes for the bromination of organic compounds, and to bromination microreactors for carrying out these processes.
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JP2003508223A |
Hydrogen fluoride adducts and ammonium fluorides are used for fluorinating acid chlorides and halocarbon compounds such as chloroalkanes or chloronated ethers. The used adducts can be regenerated and then reused in the fluorination react...
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JP2003507354A |
The present invention relates to chemical synthesis of radiolabelled perfluorinated bioactive compounds. More particularly, the present invention relates to radiolabelled compounds to be used as indicators for tissue hypoxia. More partic...
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JP2003507307A |
A mixture, comprising an alkaline fluoride or an alkaline earths fluoride or a mixture from two or more thereof and 2 % by weight or less of silicic acid, preferably pyrogenic silicic acid. Also disclosed are the production method and th...
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JP3381199B2 |
Reactors are described for the continuous reaction of gaseous substances on fixed-bed catalysts, involving continuous temperature control with the aid of a heat transfer medium. These reactors are characterised by the catalyst bed (3) be...
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JP2003503467A |
The invention concerns the use of aliphatic nitriles with relatively high molecular weight, as polar aprotic solvents, in particular in nucleophilic substitution reactions of the aromatic type. Said nitriles have a molecular mass more 79...
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JP3364896B2 |
Prepn. of polychloropyrimidines (I) involves reacting polyhydroxypyrimidines (II) with excess phosphorus oxychloride in presence of a tert. amine (TA). The novelty is that the reaction mixt. is treated by: (i) adding, per OH gp. replaced...
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JP2003500460A |
Ionic liquids were rapidly and efficiently prepared by microwave-assisted chemical transformations. A method for performing microwave-assisted reactions, including alkylation reactions, using ionic liquids as solvent resulted in high yie...
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JP2002544179A |
A method of fluorinating a substance comprises providing a reaction mixture comprising a liquid or supercritical carbon dioxide reaction medium, a first reactant, and a second reactant, wherein the first reactant is a fluorinating reagen...
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JP2002363110A |
To improve regioselectivity to carbon-carbon double bond in addition reaction of iodine fluoride. This method for producing a fluorinated organic compound is characterized by adding the iodine fluoride(IF) with reacting IF5, iodine and a...
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JP3357608B2 |
A fluorination method of oxygen and halogen sites with diaryl-, dialkoxyalkyl-, alkylalkoxyalkyl-, arylalkoxyalkyl- and cyclic aminosulfur trifluorides fluorinating reagents is disclosed.
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JP3357609B2 |
Diaryl-, dialkoxyalkyl-, alkylalkoxyalkyl-, arylalkoxyalkyl- and cyclic aminosulfur trifluorides fluorinating agents are disclosed.
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JP2002542227A |
A process for preparing 4-bromomethylbiphenyl derivatives substituted in the 2' position of general formula (I) by brominating 4-methylbiphenyl derivatives substituted in the 2' position of general formula (II) wherein: R is CN, COOR1, C...
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JP2002348266A |
To provide a method for producing a fluoro-substituted aromatic compound easily and in a high yield. The method comprises substituting the nitro group of an aromatic nitro compound with fluorine by reacting the aromatic nitro compound to...
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JP2002540177A |
The invention provides a method of selectively fluorinating an organic compound at an unactivated saturated sp<3> hybridised carbon atom, the method comprising reacting the compound with a fluorinating agent containing an N-F bond. The c...
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JP2002540055A |
(57) [Summary] The present invention relates to a method for activating an inorganic fluoride in an organic medium. The method of the present invention is characterized by allowing microwaves to act on the fluoride in the presence of a p...
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JP3346011B2 |
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JP3343139B2 |
PURPOSE: To enable the continuous operation of a fluorine electrolytic cell by uniformly applying compressive force in a circumferential direction on a metallic sleeve covering an anode and purging the fluorine generated at the anode sur...
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JP2002284710A |
To provide a method for safely producing an organic fluorine compound at a low cost, which eliminates the defects of conventional methods.This method for safely producing the organic fluorine compound is characterized by using both a dif...
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JP2002284720A |
To provide a method for safely producing an organic fluorine compound at a low cost, which eliminates the defects of conventional methods.This method for producing the organic fluorine compound is characterized by using both a urea hydro...
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JP2002284709A |
To provide a method for safely producing an organic fluorine compound at a low cost, which eliminates the defects of conventional methods.This method for safely producing the organic fluorine compound is characterized by using both a dia...
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JP2002284721A |
To provide a method for safely producing an organic fluorine compound at a low cost, which eliminates the defects of conventional methods.This method for producing the organic fluorine compound is characterized by using both an imidazoli...
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JP2002284711A |
To provide a method for safely producing an organic fluorine compound at a low cost, which eliminates the defects of conventional methods.This method for safely producing the organic fluorine compound is characterized by using both a dif...
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JP2002531536A |
Disclosed is a method of making an alpha-chloro-alpha,alpha-difluoro aromatic compound. An alpha,alpha,alpha-trichloro aromatic compound having the general formulawhere Y is C or N, R is halogen, R', amino, NHR', NR'2, OR', OCF3, or nitr...
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JP2002530356A |
A process for preparing a fluoride from its corresponding alcohol comprises the steps of (a) forming a mixture comprising (i) at least one fluorinated, saturated aliphatic or alicyclic sulfonyl fluoride (for example, perfluorobutanesulfo...
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JP2002255861A |
To provide a method for electrophilically fluorinating a substrate with an excellent electrophilically fluorinating agent.A non-substituted aromatic compound or an aromatic compound having one or more electrophilic substituents is fluori...
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JP2002234877A |
To provide an excellent N-fluorotriazinium salt electrophilic fluorinating agent.This N-fluorotriazinium salt is preferably one shown by formula I [wherein, three As are each CR (R is a substituent); two As are each N or a quaternary N a...
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JP3315222B2 |
PURPOSE: To obtain easily the compounds useful as intermediates for synthesis of α-fluoroacrylic acid on an industrial scale by using starting materials and sub raw materials available in the market by reacting specific dicarbonyl compo...
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JP3311840B2 |
PURPOSE: To obtain a 3-halogeno aromatic compound useful as an intermediate for medicines and agrochemicals in high yield while suppressing by-products by subjecting an aromatic compound such as 2-amino-5-trifluoromethylpyridine to speci...
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JP2002201181A |
To provide an electrophilic fluorination method using an excellent electrophilically fluorinating agent.This electrophilic fluorination method comprises contacting an organic substrate such as a chlorobenzene or nitrobenzene with an N- f...
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JP2002516886A |
The present invention relates to a process for preparing alkyl, alkenyl and alkynyl chlorides from alcohols by reaction with a chlorinating agent in the presence of a catalyst, wherein the catalyst is a urea compound.
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