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7271302 |
Method for brominating organic compounds
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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6201161 |
Method of reducing benzaldehyde or benzotrihalide content in a mixture
Disclosed is a method of removing about 0.05 to about 20 mole % of a benzaldehyde or benzotrihalide from a mixture with a liquid compound that boils within about -10 to about ±5° C. of the...
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6187977 |
Process for producing chlorinated tertiary carbon-containing hydrocarbons
The present invention thus provides a process for producing (D) a chlorinated hydrocarbon compound of the general formula (2): C n R 1 m H k (CR 2 R 3 Cl) j (2) [wherein n is an integer of...
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6133468 |
Method for preparing substituted benzyl bromides
Substituted benzyl bromides of the formula I ##STR1## where at least one substituent R 1 -5 is an electron-attracting group such as fluorine, chlorine, bromine, C 1 -C 4 -alkoxycarbonyl, cyano or...
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5821393 |
Process for the preparation of aromatic bromoalkyl-substituted hydrocarbon compounds
The present invention relates to a process for the preparation of an aromatic bromoalkyl-substituted hydrocarbon compound, in which an alkyl-substituted aromatic hydrocarbon compound is reacted...
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5672791 |
Process for the preparation of nuclear-halogenated benzotrichlorides from the corresponding benzotrifluorides
Nuclear-halogenated benzotrichlorides are prepared in a particularly advantageous manner from the corresponding nuclear-halogenated benzotrifluorides by reacting nuclear-halogenated...
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5502261 |
Process for preparing 2,2'-bis(halomethyl)-1,1'-binaphthyl
The present invention relates to a process for preparing 2,2'-bis(halomethyl)-1,1'-binaphthyl, by reacting 2,2'-dimethyl-1,1'-binaphthyl in the presence of a solvent with a halogenating agent under...
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5288915 |
Process of making ketones
Ketones are prepared by admixing at least one gem-dichloro compound with at least one acid such that the ketone wherein the keto-oxygen replaces the gem-dichloro group is formed. The reaction is...
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5157173 |
Process for 4-chlorobenzotrichloride
4-chlorobenzotrichloride was prepared by the chlorination of p-xylene in the vapor phase at a temperature above about 200° C. in the presence of an activated carbon catalyst and water. An...
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5144067 |
Process for the coproduction of alkyl iodides and alpha-iodocarboxylic acids and/or anhydrides thereof
Disclosed is a process for the coproduction of (1) an alkyl iodide and (2) an α-iodocarboxylic acid, a mono-α-iodocarboxylic anhydride or a mixture thereof which comprises contacting a mixture of...
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5110425 |
Terminal chlorination of normal alkane hydrocarbons
A terminally chlorinated normal alkane hydrocarbon is produced at high terminal selectivity, by adsorbing a normal alkane into a select zeolite and chlorinating the adsorbed alkane in the zeolite....
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4967026 |
Process for the production of chloromethyl phenethyl bromide
A process is described for preparing chloromethyl phenethyl bromide, in which phenethyl bromide is reacted with HCl and formaldehyde in the presence of zinc chloride as the catalyst, and in a...
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4956055 |
Preparation of bidentate ligands
A process is disclosed for preparing bidentate ligands of the formula: ##STR1## wherein: each Ar is independently selected from aromatic ring compounds having 6 up to 14 carbon atoms, e.g., phenyl,...
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4814467 |
Processes using a phosphorus complex
A process for chlorinating compounds containing a carbon atom bonded to a hetero-atom selected from the group consisting of oxygen, nitrogen and sulfur; said process comprises contacting the carbon...
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4783562 |
Process for the preparation of trichloromethyl-substituted aromatic compounds, and trichloromethyl-substituted aromatic compounds obtained in this process
Trichloromethyl-substituted aromatic compounds are obtained by the chlorination of thioethers of the formula ##STR1## wherein Ar represents an optionally substituted aryl radial, X 1 denotes...
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4767885 |
Sterically hindered binifers telechelic polymers made therefrom
Sterically hindered binifers are made as well as utilized to produce telechelic polyisobutylenes. The telechelic polymers can be produced at high temperatures, for example minus 30° C.
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4563529 |
Process for producing trifluoromethylpyridines
A trifluoromethylpyridine selected from the group consisting of α-trifluoromethylpyridine, γ-trifluoromethylpyridine, a bis(trifluoromethyl)pyridine and chlorides thereof which have 1 to 3...
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4513154 |
Process for consecutive competitive gas phase reaction
A process for consecutive-competitive gas phase halogenation of organic compounds, i.e. alkanes, alkenes and benzene, alkyl benzenes and alkenyl benzenes containing labile hydrogens and having no...
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4489210 |
Process for the halogenation of organic compounds
The invention relates to a process for the halogenation of organic compounds in the liquid phase using gaseous halogenating agents, the gaseous halogenating agents being metered into the reaction...
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4465865 |
Method of preparing terephthalic aldehyde and isophthalic aldehyde
A method of preparing terephthalic aldehyde or isophthalic aldehyde from p-xylene or m-xylene, which comprises chlorinating the side chain or p or m xylene to a chlorination degree of 2.5 to 3.5,...
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4423263 |
Process for the side-chain polyhalogenation of polyalkylaromatic hydrocarbons
A process for the selective side-chain halogenation of alkylaromatic hydrocarbons, consisting of reacting the hydrocarbon with an N-halogenoamine in the presence of a proton donor and a metal ion.
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4362884 |
Silacrown ethers, method of making same, and use as phase-transfer catalysts
Organosilicon compounds referred to as silacrown ethers or "silacrowns" are of the general formula: ##STR1## where R 1 and R 2 are organic radicals or hydrogen and n is an integer between 4 and...
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4331821 |
Process for the monohalogenation of alkylbenzenes in the α-position and new alkylbenzenes monohalogenated in the α-position
A process for the monohalogenation of alkylbenzenes in the α-position is disclosed wherein an alkylbenzene reactant containing a hydrogen atom in the α-position is contacted with a halogen and...
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4329525 |
Production of chlorinated compounds by use of molten salts
A compound is chlorinated with chlorine to produce chlorinated product and hydrogen chloride byproduct. Recovered hydrogen chloride byproduct is contacted with oxygen and a molten salt mixture...
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4306102 |
P-Tert.butylbenzotribromide and p-tert.butylbenzoyl bromide and process for their manufacture
p-Tert.butylbenzotribromide and the derivatives thereof which is halogen-substituted at the nucleus are prepared under side chain halogenation conditions by bromination of p-tert.butyltoluene and...
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4256907 |
Preparation of substituted vinylcyclopropane-carboxylic acid esters
A process for the preparation of a substituted vinyl-cyclopropanecarboxylic acid ester of the formula ##STR1## in which R 1 and R 2 each independently is alkyl with 1-4 carbon atoms or halogen, ...
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4226783 |
α-Chlorination process
A process for α-chlorination of side chains of electronegatively substituted aromatic compounds with dichlorine monoxide.
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4214004 |
Insecticidal cyclopropanecarboxylates from substituted [1,1'-biphenyl]-3-ylmethyl compounds
Substituted [1,1'-biphenyl]-3-ylmethyl 3-(2,2-dihaloethenyl)-2,2-dimethylcyclopropanecarboxylates, as well as processes, uses, and intermediates thereto, are disclosed. The substituted...
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4212996 |
Process for the side-chain chlorination of perhalogenated methyl aromatic compounds
Process for the side-chain chlorination of aromatic compounds completely halogenated in the nucleus, containing methyl groups, and having the general formulas: ##STR1## wherein y=1 or 2, z=0 to 1,...
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4085153 |
Bromination of unreactive olefins with bromine chloride
Bromine chloride is contacted with a normally unreactive olefin such as 1,2-di, tri- or tetrahalo- ethylene or 1,2-di, tri- or tetraphenyl ethylene or 1-halo-2-phenyl ethylene or 1-halo-2-phenyl...
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4045501 |
Method for making o- and p- haloalkyl styrenes
A method for making o- and p- halomethyl styrenes which comprises reacting an ethyl benzene, paraformaldehyde and hydrogen halide, treating the reaction product with a halogen, and...
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3922305 |
Chemical compounds
1. A compound selected from the group consisting of: ##SPC1## And acid addition salts thereof wherein R is selected from the group consisting of hydrogen, alkyl having up to 6 carbon atoms, benzyl,...
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3917718 |
Cyclopropyl carbinol derivatives
Aryl substituted diketones and keto-esters, useful as antiviral agents and insecticides, are prepared by reacting an arylalkyl or arylalkenyl iodide with a metal salt of the appropriate diketone or...
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3872112 |
Tetrahydrofurfuryl aminoesters
The present invention relates to substituted tetrahydrofurfuryl aminoesters. The novel tetrahydrofurfuryl dialkyl aminoesters are represented by the formula ##SPC1## In which R is a member of the...
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3860652 |
8-Aminoalkyl substituted dibenzobicyclo [3.2.1] octadienes
Dibenzobicyclo[3.2.1]octadienes substituted in the 8 position by substituted aminoalkyl groups, and salts thereof, are described. These compounds have central nervous system activity as...
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3846485 |
PHENYLACETIC ACID DERIVATIVES, A METHOD FOR THEIR PREPARATION AND THE APPLICATIONS THEREOF
The new derivatives of formula : ##SPC1## In which R is hydrogen or a methyl radical, are useful as anti-inflammatory drug.
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3758622 |
PREPARATION OF ALKYNYL ARYL COMPOUNDS
A process for the conversion of alkyl aryl compounds to alkynyl aryl compounds which comprises subjecting said alkyl aryl compounds to chlorination under conditions suitable for the dichlorination...
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3691192 |
AN N-TRITYL-IMIDAZOLE
N-trityl-imidazoles of the formula: ##SPC1## In which R is selected from the group consisting of halo, nitro, cyano, alkyl of one to three carbon atoms, alkoxy of one to three carbon atoms...
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3627731 |
REACTION OF POLYMETHYLBENZENES AND CARBON TETRACHLORIDE
This disclosure concerns the process of reacting carbon tetrachloride with polymethylbenzenes at a temperature above about 270° C. α-chloroparaxylene is prepared from paraxylene.
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3624157 |
PROCESS FOR PREPARING ORTHO-CHLOROBENZALDEHYDE
This invention discloses a process for preparing orthochlorobenzaldehyde which comprises chlorinating the side chains of a mixture of ortho- and para-chlorotoluene containing from about 50 to about...
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3542888 |
PRODUCTION OF ETHYNYL BENZENES
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3422143 |
ALPHA,ALPHA,ALPHA',ALPHA'-TETRAMETHYL-P-XYLYLENEDIAMINE
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3420900 |
HALOGEN EXCHANGE PROCESS
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3399225 |
Process for producing aromatic nitriles
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3288823 |
2, 6-bis (hydroxymethyl) naphthalene and esters thereof
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3268601 |
Pyrolysis of p-xylene and halogenated hydrocarbons
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3253900 |
Herbicidal composition containing polychlorotoluyl chloride
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3225087 |
Process for production of sodium 2,3,6-trichlorophenylacetate
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3223728 |
Process for the preparation of polychlorobenzoic acids
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3200034 |
Method of destroying bacteria employing chlorinated alkylbenzenes
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