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| Number | Title | Issue Date |
| 7829741 | Process for producing α, α-difluoroamine A process for producing an α,α-difluoroamine which comprises using hydrogen fluoride and a Lewis base in specific amounts in the halogen-fluorine exchange reaction using an α,α-dihaloamine as the substrate. The process can be industrially applied, enables to obt... | 11/09/2010 |
| 7767857 | Preparation of 2,4,6,-trichloroaniline from aniline using N-chloro reagents A product-by-process and method of manufacturing 2,4,6-trichloroanailine intermediates. The method of manufacturing 2,4,6-trichloroanailine intermediates by utilizing solvents and N-chlorinating reagents. ... | 08/03/2010 |
| 7638652 | Method for producing fluoroamine Provided is a one-step efficient production method for an α,α-difluoroamine of a general formula (1) below from an amide compound. The method is an economical method capable of producing the intended α,α-difluoroamine at high yield by reacting a starting amide c... | 12/29/2009 |
| 7553993 | Process for the preparation of 2,6-dihalo-para-trifluoromethylaniline Process for the preparation of a compound of general formula (I): in which X represents a halogen atom, by reaction of para-trifluoromethylaniline of formula (II): with ... | 06/30/2009 |
| 7196226 | Fluoraminoolefins and fluorination reagents which can be prepared therefrom The present invention relates to fluorination reagents comprising 1-fluoro-1-aminoolefins and also processes for preparing fluorination reagents comprising 1-fluoro-1-aminoolefins. ... | 03/27/2007 |
| 7154006 | Preparation of fluorinated anilines The invention relates to a process for preparing fluorinated anilines starting from the corresponding chlorinated anilines, and also to the use of the fluorinated anilines. ... | 12/26/2006 |
| 7041852 | Perfluoroalkylanilines The present invention relates to a process for preparing perfluoroalkylanilines and to their use for preparing active ingredients, in particular for agrochemicals. ... | 05/09/2006 |
| 6747175 | Chlorination of an aniline in a hydrofluoric medium The invention concerns a method for the synthesis of chlorinated aniline on the ring and comprising at least a sp3 hybridization carbon atom both perhalogenated and bearing a fluorine atom. Said method is characterized in that it comprises a step which consists in c... | 06/08/2004 |
| 6437203 | Process for producing iodinated aromatic compounds Disclosed is a process for producing an iodinated aromatic compound, which comprises reacting an aromatic compound with an iodine compound in the presence of a chlorate as an oxidizing agent.... | 08/20/2002 |
| 6388135 | Preparation of 4-bromoaniline derivatives A process for preparing 4-bromoaniline derivatives of the formula I ##STR1## where: R1 is C1 -C6 -alkyl, C1 -C6 -haloalkyl, C1 -C6 -alkoxy, C1 -C6 -haloalkoxy, C... | 05/14/2002 |
| 6340772 | Process for preparing (hetero) aromatic substituted benzene derivatives Three processes are described for preparing (hetero)aromatic substituted benzene derivatives which comprise aromatization of cyclohexenone derivatives via (chloro)cyclohexadiene derivatives.... | 01/22/2002 |
| 6271418 | Process for preparing (hetero) aromatic substituted benzene derivatives Three processes are described for preparing (hetero)aromatic substituted benzene derivatives which comprise aromatization of cyclohexenone derivatives via (chloro)cyclohexadiene derivatives.... | 08/07/2001 |
| 6191309 | Method for preparing halogenated 2-amino or 2-acetamido trifluoromethylbenzene derivatives The halogenation of a compound of formula (1) or formula (2'), wherein Q is an NH2 group optionally in the form of an addition salt, or an NHCOCH3 group, and X is a halogen atom, using a compound of formula X2, in a solven... | 02/20/2001 |
| 6166272 | Molybdenum trioxide catalyzed fluorination reactions Disclosed is a method of fluorinating a substrate having the general formula ##STR1## where each R is independently selected from halogen, alkyl from C1 to C12, aryl from C6 to C12, alkoxide from C1 | 12/26/2000 |
| 6114584 | Method of preparing brominated substituted anilines Disclosed is a method of preparing brominated substituted anilines. A mixture in water is formed of a substituted aniline having the general formula ##STR1## where each R is independently selected from halogen, alkyl and haloalkyl from C1 | 09/05/2000 |
| 6022997 | Process for preparing triphenylamine compounds by using a nitrogen trihalide This invention provides a process for the preparation of triphenylamine compounds useful as charge transport materials. According to this process, a triphenylamine compound of the general formula (2) ##STR1## of the general formula (1) ##STR2## ... | 02/08/2000 |
| 5965735 | Process for preparing flunixin and intermediates thereof Process for preparing a key intermediate, 2-methyl-3-trifluoromethylaniline (MTA) of Flunixin, as well as novel intermediates thereof are described.... | 10/12/1999 |
| 5907063 | Aromatic bromination process Activated aromatic compounds are more economically ring brominated by reacting the compounds with a sulfoxide/HBr brominating agent while removing water from the reaction mixture. The water removal provides high conversions and yields when employing stoic... | 05/25/1999 |
| 5874656 | Process for preparing o-alkylfluorobenzenes o-Alkylfluorobenzenes are advantageously prepared by heating the corresponding chloroformates to from 70° to 200° C. in the liquid phase in the presence of hydrogen fluoride and in the presence of an inert diluent other than a halogenated alkane.... | 02/23/1999 |
| 5856577 | Process for the preparation of fluoroanilines from fluorinated nitrated benzene compounds The instant invention relates to a process for the preparation of fluoroanilines of formula (I) wherein a fluorinated nitrated benzene compound of formula (II) is subjected to a catalytic hydrogenation in a liquid medium containing a catalyst, under hydro... | 01/05/1999 |
| 5672760 | Ablatively photodecomposable compositions The present invention provides an ablatively photodecomposable polymer having a photoabsorber bound to the polymer (the "ablatively photodecomposable polymer") which does not phase separate, nor does it crystallize. The ablatively photodecomposable polyme... | 09/30/1997 |
| 5508467 | Process for the preparation of hydroxyalkylaminonitrobenzene derivatives The present invention relates to a process for the preparation of compounds of the general formula I ##STR1## by reaction of compounds of the general formula II ##STR2## with compounds of the general formula III ##STR3## in inert aprot... | 04/16/1996 |
| 5486609 | Preparation of carbocylic M-aminohydroxyaromatics A process for preparing carbocyclic m-aminohydroxyaromatics comprises reacting the corresponding o-- or m-halohydroxyaromatics or metal salts thereof with primary or secondary amines in the presence of a base and in the presence or absence of a diluent.... | 01/23/1996 |
| 5484931 | Process for preparing Flunixin and intermediates thereof Process for preparing a key intermediate, 2-methyl-3-trifluoromethylaniline (MTA) of Flunixin, as well as novel intermediates thereof are described.... | 01/16/1996 |
| 5471002 | Process for preparing trifluoromethylanilines A process for preparing trifluoromethylanilines of the formula (I), ##STR1## in which R1 and R2, independently of each other, are hydrogen, halogen, (C1 -C4) alkyl, hydroxyl, alkoxy, alkylthio, carboxyl, or... | 11/28/1995 |
| 5399767 | Process for producing 3,5-difluoraniline A process for producing 3,5-difluoroaniline, which comprises reacting a benzonitrile compound of the formula (I): ##STR1## wherein each of X1, X2 and X3 is hydrogen, chlorine, bromine or a cyano group, provided that a... | 03/21/1995 |
| 5336808 | Process for the preparation of 3,5-diaminobenzotrifluoride 3,5-Diaminobenzotrifluoride is prepared by reaction of 4-chloro-3,5-dinitrobenzotrifluoride with sodium formate in acetic acid, in the presence of sodium acetate and palladium on charcoal.... | 08/09/1994 |
| 5238818 | Oxidizable color producing reagent This amount of an oxidative substance or a peroxidase-like substance can be determined by using a combined color former comprising 4-aminoantipyrine or a derivative thereof, etc., as a main color former and a p-fluoroaniline derivative or a salt thereof a... | 08/24/1993 |
| 5149875 | Halogenation of aromatic amine compounds Aromatic amine compounds are halogenated in the presence of a quaternary ammonium halide.... | 09/22/1992 |
| 5145958 | Process for the preparation of 2,4- or 2,6-dihalogeno-aniline 2,4- or 2,6-dihalogeno-aniline can be prepared by reacting an amino-benzoic acid ester of the formula ##STR1## in which R1, R2 and R3 have the meanings indicated in the description, with 2-2.5 moles of a chlorinating ... | 09/08/1992 |
| 5091581 | Process for the selective preparation of N-substituted 1,4-diamino-2-nitrobenzenes The invention relates to a process for the selective preparation of N4 -substituted 1,4-diamino-2-nitrobenzenes of the general formula I ##STR1## in which R1 denotes hydrogen, halogen, (C1 -C4) alkyl or (C | 02/25/1992 |
| 5089653 | Process for the selective reduction of the 4-halogen in 2,4-dihaloanilines Substituted 2-haloanilines are prepared from the correspondingly substituted 2,4-dichloro- or 2,4-dibromoanilines by selectively reducing a chloro or bromo substituent para to a protected amino group in the presence of the same halogen as an ortho substit... | 02/18/1992 |
| 5068392 | Process for the preparation of 2-chloro and 2,6-dichloroanilines 2-Chloro and 2,6-dichloroanilines, optionally substituted in the 3-, 5-, and/or 6-position are prepared from the corresponding anilides by selective bromination, chlorination, reduction and hydrolysis. The selectivity of the process for introducing chlori... | 11/26/1991 |
| 5053542 | Catalytic bromination of 2-fluoroaniline A process for the production of 2,4-dihaloaniline, especially 4-bromo-2-fluoroaniline, via the halogenation (bromination) of 2-haloaniline (2-fluoroaniline) in the presence of quaternary ammonium halide (bromide) catalyst in an inert solvent. The yield an... | 10/01/1991 |
| 5001264 | N-phenyl-2,2,6,6-tetrahalocyclohexaneimine and processes for preparing 2,2,6,6-tetrahalocyclohexaneimine derivative and 2,6-dihaloaniline derivative A process for preparing a 2,2,6,6-tetrahalocyclohexaneimine derivative (I) which comprises reacting a 2,2,6,6-tetrahalocyclohexanone with a primary amine or ammonia in the presence of a Lewis acid, a process for preparing a 2,6-dihaloaniline derivative (I... | 03/19/1991 |
| 4983747 | Process for preparation of perfluoro organic compounds Disclosed is a process for the preparation of a perfluoroorganic compound, which comprises fluorinating a partially fluorinated or unfluorinated organic compound having carbon-to-fluorine bonds under mild conditions and then, contacting the resulting reac... | 01/08/1991 |
| 4929317 | Process for preparation of perfluoro organic compounds Disclosed is a process for the preparation of a perfluoro organic compound, which comprises fluorinating a partially fluorinated or unfluorinated organic compound having carbon-to-fluorine bonds under mild conditions and then, contacting the resulting rea... | 05/29/1990 |
| 4925984 | Para-bromination of ortho-alkyl anilines A process of selectively preparing p-bromo-o-alkylanilines (e.g. 4-bromo-2-methylaniline) by reacting o-alkylanilines (e.g., 2-methylaniline) with unadsorbed bromine in a solvent selected from the group consisting of an inert di- tri- or tetrahaloaliphati... | 05/15/1990 |
| 4918230 | Process for the preparation 4-bromoaniline hydrobromides 4-Bromoaniline hydrobromides of formula I ##STR1## wherein R1 and R2 are each independently of the other C1 -C10 alkyl or C3 -C7 cycloalkyl, are prepared by brominating an aniline hydr... | 04/17/1990 |
| 4906781 | Method for the preparation of 4'-(substituted)-amino-2-(substituted) amino-3',5'-dichloroacetophenone and salts thereof A method for the preparation of 4'-(substituted)-amino-2-(substituted)amino-3',5'-dichloroacetophenone and salts thereof. The method involves the chlorination of the corresponding 4'-(substituted)amino-2-(substituted) aminoacetophenone and acid addition ... | 03/06/1990 |
