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| Number | Title | Issue Date |
| 4808748 | Trifluoromethylation process Trifluoromethylaromatic compounds are prepared by reacting the corresponding aromatic bromide or iodide with potassium trifluoroacetate in the presence of cuprous iodide and a dipolar aprotic solvent.... | 02/28/1989 |
| 4769503 | Preparation of 3,4-dichlorobenzotrihalides A process for the preparation of 3,4-dichlorobenzotrihalides of the formula I ##STR1## where X is fluorine or chlorine, by reacting the corresponding 4-monochlorobenzotrihalides with chlorine gas in the presence of a catalytic amount of a Lewis ... | 09/06/1988 |
| 4754084 | Preparation of substituted fluorobenzenes Substituted fluorobenzenes are produced by pyrolyzing vinylfluorocyclobutanes at a temperature of 250°-450° C. in the presence of activated carbon or certain metal oxides or mixtures of metal oxides.... | 06/28/1988 |
| 4734503 | Catalytic transhalogenation of haloaromatics Catalytic transhalogenation of haloaromatics according to the equation: wherein: when Cz is a benzene derivative, a+b=5; e=0; c+d=5; z=6; when Cz is a pyridine derivative, a+b=4; e=1; c+d=4; z=5; when Cz is a naphthalene derivative, a+b=... | 03/29/1988 |
| 4704483 | 3,4-difluoro-5-nitrobenzotrifluoride and preparation of fluoro-nitro-benzotrifluorides A process for the preparation of 3-chloro-4-fluoro-5-nitrobenzotrifluoride and 3,4-difluoro-5-nitrobenzotrifluoride by reaction of 3,4-di-chloro-5-nitrobenzotrifluoride and 4-chloro-3,5-dinitrobenzotrifluoride, respectively, with an alkali metal fluo... | 11/03/1987 |
| 4691066 | Process of preparing metachlorobenzotrifluoride In the preparation of m-chlorobenzotrifluoride (m-CBTF) by reaction between benzotrifluoride and chlorine gas, a combination of a chloride of a metal having a valence of 3 to 6 and a small amount of iodine is used as catalyst. Alternative to iodine use ca... | 09/01/1987 |
| 4680406 | Process for fluorinating halogenated organo-compounds A novel apparatus and a process for fluorinating organic compounds from halogen-containing organic compounds is disclosed.... | 07/14/1987 |
| 4650913 | Sulfinate-initiated addition of perfluorinated iodides to olefins Reaction of a perfluorinated iodide with an olefin initiated by a sulfinate salt to prepare fluorinated iodide and diiodide monomers and surface active agents.... | 03/17/1987 |
| 4649207 | Derivatives of diphenylhexafluoropropane Derivatives of diphenylhexafluoropropane having the formula: ##STR1## where R is an unsubstituted or substituted alkylene, an epoxy, a silyl or alkoxysilyl group; and where X and Y are hydrogen or halogen. The derivatives are useful in formulating po... | 03/10/1987 |
| 4631151 | Method for production of fluorine-containing aromatic derivative A fluorine-containing aromatic derivative is produced by causing a di(haloacyl)peroxide to react upon benzene, a mono-substituted benzene, naphthalene, or a mono-substituted naphthalene thereby introducing an X(CF2)n -group into the ... | 12/23/1986 |
| 4587366 | Process for preparing fluoroalkyl-substituted iodoalkanes A process is described for preparing fluoroalkyl-substituted iodoalkanes by reacting a fluorinated alkyl iodide with a substituted or unsubstituted alkene under heat in the presence of a catalyst. The catalyst is at least one metal which, in the periodic ... | 05/06/1986 |
| 4582948 | 3-chloro-4-fluoro-5-nitrobenzotrifluoride Chloro-aromatic compounds of the formula ##STR1## wherein R is CF3, OCF3, OC2 F5, CN, NCO, or COCl, m is 0, 1 or 2; n is 0, 1 or 2; q is 1 or 2; q+m+n is less than 6; and when q is 1, m is 2; are prepared b... | 04/15/1986 |
| 4568700 | Process for the production of halomethylating agents which are of low volatility There is provided a process for the production of halomethylating agents which are of low volatility; and a process for the halomethylation of aromatic substrates and aromatic polymeric substances. Among products produced from the halomethylaryl polymers ... | 02/04/1986 |
| 4560814 | Process for alkylating halogenated and trifluoromethylated benzene compounds Disclosed is a process for alkylating halogenated and trifluoromethylated benzene compounds. In that process, an alkyl halide is reacted with a benzene compound having two or three substituents selected from the group consisting of the halogens and the tr... | 12/24/1985 |
| 4558166 | Process for the preparation of benzal chlorides Process for the preparation of benzal chlorides from benzotrichlorides, according to which benzotrichlorides are reacted with thiols in the presence of metal salts at elevated temperatures.... | 12/10/1985 |
| 4533777 | Process for the preparation of aromatic trifluoromethyl compounds A process for the preparation of an aromatic trifluoromethyl compound which comprises contacting an aromatic compound of the formula ##STR1## wherein R1 denotes hydrogen, alkyl, aryl, aralkyl, aryloxy, arylthio, polyhalogenoalkoxy or polyh... | 08/06/1985 |
| 4503254 | Process for making bis(halophenyl)hexafluoropropanes A new process for preparing diphenyl derivatives of hexafluoropropane containing halogen substituents on the phenyl rings and new halogen-substituted diphenyl derivatives of hexafluoropropane prepared thereby are disclosed. The new compounds of this inven... | 03/05/1985 |
| 4489212 | Process for preparing allyl- and 2-chloropropyl- or propenylarene compounds Arenes are reacted with allyl chloride to produce allylarenes and 2-chloropropyl- or propenylarenes using a catalyst comprising a metal oxide substrate having tantalum (V) halide/oxide bound to the surface of the substrate.... | 12/18/1984 |
| 4438088 | Preparation of antimony trifluorodichloride and fluorination of fluorinatable hydrocarbons and halocarbons therewith The invention disclosed herein is a method for preparing antimony trifluorodichloride whereby antimony trifluoride is dispersed in a liquid organic medium to form a slurry and contacted with chlorine. The invention further comprises a process for fluorina... | 03/20/1984 |
| 4436941 | Process for the isomerization of alkylbenzotrifluorides Alkylbenzotrifluorides can be isomerized in the presence of hydrogen fluoride.... | 03/13/1984 |
| 4423259 | Process for producing phenyl-[3,3,3-trifluoropropyl)phenyl]methane Novel trifluoropropyl-substituted aryl- or aralkylbenzene of the formula: ##STR1## wherein R is a not-substituted or ring-substituted phenyl-, benzyl-, phenethyl- or alpha-methylbenzyl group by one 3,3,3-trifluoropropyl group, and n is an integer of ... | 12/27/1983 |
| 4405824 | Process for producing aryl- or aralkylbenzene having two benzene rings at least one of which is substituted by at least one 3,3,3-trifluoropropyl group Novel trifluoropropyl-substituted aryl- or aralkylbenzenes of the formula: ##STR1## wherein R is a not-substituted or ring-substituted phenyl-, benzyl-, phenethyl- or alpha-methylbenzyl group by one 3,3,3-trifluoropropyl group, and n is an integer of... | 09/20/1983 |
| 4400563 | Process for preparing perfluoro(lower)alkylbenzenes and their derivatives A process for preparing perfluoro(lower)alkylbenzenes and derivatives thereof which comprises contacting a lower alkylbenzene or the corresponding derivative with hydrogen fluoride in the presence of chlorine in the gaseous phase at an elevated temperatur... | 08/23/1983 |
| 4396785 | 3,3,3-Trifluoropropyl derivatives of naphthalene or methylnaphthalene and process for preparing the same Novel 3,3,3-trifluoropropyl derivatives of naphthalene or methylnaphthalene of the general formula ##STR1## wherein R1 and R2 respectively represent hydrogen atom or methyl group, with the proviso that R1 and R2 | 08/02/1983 |
| 4374291 | Synthesis of bis(ethynylphenyl) compounds Bis(ethynylphenyl) compounds are prepared by an improved synthesis process which increases yield and is suitable for large scale synthesis operations. Aromatic dianilines are diazotized to form aromatic halides that are subsequently coupled with an end-pr... | 02/15/1983 |
| 4367350 | Process for preparing perfluoro(lower)alkyl-benzenes and their derivatives A process for preparing perfluoro(lower)alkylbenzenes and derivatives thereof which comprises contacting a lower alkylbenzene or the corresponding derivative with hydrogen fluoride in the presence of chlorine in a gaseous phase at an elevated temperature ... | 01/04/1983 |
| 4351975 | Process for preparing chlorinated compounds A process for the preparation of monochlorinated and dichlorinated bis-(perhalomethyl)-benzenes of the formula (I) by reacting bis-(perhalomethyl)-benzenes of the formula (II) with elementary chlorine in chlorosulfonic acid as the reaction medium, at a te... | 09/28/1982 |
| 4334111 | Process for preparing substituted benzotrihalides Benzotrihalides are prepared by pyrolyzing a substituted phenyl trihaloacetate of the formula ##STR1## wherein each X is halo, nitro, alkyloxy, aryloxy, aralkyoxy, cyano, lower alkyl, haloalkyl, haloalkyloxy, alkenyl, haloalkenyl, carbamoyl, N,N... | 06/08/1982 |
| 4331613 | Process for the preparation of trifluoromethylnaphthalenes A process for the preparation of an optionally substituted trifluoromethyl-naphthalene which comprises contacting a compound of the formula ##STR1## in which R1 denotes hydrogen, alkyl, aralkyl, aryl, aryloxy, arylthio, polyhalogenoal... | 05/25/1982 |
| 4327036 | Chlorination process Process for nuclear chlorination of non-phenolic aromatic compounds, said process comprising contacting and reacting a non-phenolic aromatic compound having a net Hammett ς value of about -0.1 to about 2.0 with chlorine monoxide in the presence of at lea... | 04/27/1982 |
| 4324929 | Process for producing mono, bis or tris(3,3,3-trifluoropropyl)benzene A process for producing mono, bis or tris(3,3,3-trifluoropropyl)benzene, which comprises bringing benzene into reaction with 3,3,3-trifluoropropylene in the presence of an acid catalyst selected from the group consisting of hydrogen fluoride, boron triflu... | 04/13/1982 |
| 4226783 | -Chlorination process A process for -chlorination of side chains of electronegatively substituted aromatic compounds with dichlorine monoxide.... | 10/07/1980 |
| 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 [1,1'-biphenyl]-3-ylmethyl 3-(2,2-dihaloethenyl)-2,2-dimethylcycl... | 07/22/1980 |
| 4207266 | Process for the preparation of trifluoromethylated aromatic compounds This invention relates to a novel process for the direct trifluoromethylation of aromatic compounds via carbon tetrachloride and hydrogen fluoride in the presence of strong Bronsted or Lewis acids which give an acidic reaction (increase in concentration o... | 06/10/1980 |
| 4188346 | Dehydrohalogenation of (polyhaloalkyl)benzenes A process for the dehydrohalogenation of a (polyhaloalkyl)benzene containing a benzylic halogen such as 1,3-dichloro-5-(2,4,4,4-tetrachlorobutyl)benzene by contacting the (polyhaloalkyl)benzene with a suitably active Lewis acid catalyst such as SbCl | 02/12/1980 |
| 4173706 | Process for producing fluorinated organic compounds containing a difluoromethylene group from compounds comprising at least one carbonyl function A novel process for producing fluorinated organic compounds containing a difluoromethylene group, essentially characterized by reacting organic compounds containing a carbonyl function with molybdenum hexafluoride at room temperature and under atmospheric... | 11/06/1979 |
| 4133837 | Preferential aliphatic halogenation of ar-substituted alkylbenzenes In an isomeric mixture of ar-substituted-1-(sec-alkyl)benzenes, such as a mixture of 2-chlorocumene, 3-chlorocumene and 4-chlorocumene, the alkyl groups of the 3-isomer and 4-isomer react preferentially with a halogen in the presence of a catalyst such as... | 01/09/1979 |
| 4104300 | Method of preparing carboxylic acid chlorides of the benzene series In a process for preparing substituted or unsubstituted carboxylic acid chlorides of the benzene series by contacting the corresponding carboxylic acid ester with an aromatic compound containing at least one nuclearly bound trichlormethyl group in the pre... | 08/01/1978 |
| 4049727 | Polyhaloindene compounds New compounds and a process for the preparation thereof are disclosed of the formula: ##STR1## WHEREIN EACH R is independently halogen or lower alkyl and n is from 2 to 4. These compounds are useful as chemical intermediates and fire retardant a... | 09/20/1977 |
| 4038331 | Catalytic process for preparation of perfluoroalkyl substituted aromatic compounds Perfluoroalkyl substituted aromatic or heteroaromatic compounds are prepared by reacting a perfluoroalkyl bromide with an aromatic compound in the vapor phase in the presence of a catalytic amount of iodine or an iodine generating compound.... | 07/26/1977 |
