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| Number | Title | Issue Date |
| 7381844 | Hydrogenation process of chlorinated nitrobenzene A hydrogenation process of chloronitrobenzene. The hydrogenation process comprises the steps of producing a nanosized boron-containing nickel catalyst, wherein a ratio of the amount of the boron atom to the amount of the nickel atom in the nanosized boron-containing... | 06/03/2008 |
| 7282610 | Method of producing aromatic amine compound having alkylthio group A method of producing an aromatic amine compound, that includes reducing an aromatic nitro compound that has an aromatic ring having an alkylthio group as a substituent, to obtain a corresponding aromatic amine compound, wherein the aromatic nitro compound is reduce... | 10/16/2007 |
| 7217842 | Catalysts for nucleophilic substitution, synthesis thereof, composition containing them and use thereof The invention concerns novel catalysts for aromatic nucleophilic substitution. Said catalysts are compounds of the general formula (I), wherein: R1, R2, R3, R4, R5, and R6, identical or different, are... | 05/15/2007 |
| 7193112 | Process for the production of aromatic amines by heterogeneously catalysed hydrogenation The invention describes a process for the production of aromatic amines by the catalytic hydrogenation of aromatic nitro compounds, with the process being characterized by at least one catalytic hydrogenation step and the catalyst consists at least of a monolithic s... | 03/20/2007 |
| 7147947 | Selective carbon monoxide oxidation catalyst, method of making the same and systems using the same A CO-selective catalyst comprises a catalytic material, wherein the catalytic material is selected from the group consisting of Pt, Pd, Rh, Ir, Os, Ru, Ta, Zr, Y, Ce, Ni, Cu, and oxides, alloys, compounds, and combinations comprising at least one of the foregoing; a... | 12/12/2006 |
| 7109378 | Monolith catalytic reactor coupled to static mixer The invention pertains to an improved apparatus comprised of a monolith catalytic reactor having an inlet and an outlet and a static mixer having an inlet and an outlet thereto with the outlet of said static mixer in communication with the inlet of said monolith cat... | 09/19/2006 |
| 7067693 | Deeply reduced oxidation catalyst and its use in preparing N-(phosphonomethyl) glycine compounds This invention relates to an improved catalyst, comprising a carbon support having a noble metal at its surface, for use in catalyzing liquid phase oxidation reactions, especially in an acidic oxidative environment and in the presence of solvents, reactants, interme... | 06/27/2006 |
| 7064237 | Method for the production of amines Amines are prepared by hydrogenation of the corresponding nitroaromatics in a vertical reactor whose length is greater than its diameter and which has in its upper region a downward-directed jet nozzle via which the reaction mixture and, if desired, part of the star... | 06/20/2006 |
| 7015176 | Process for the synthesis of aryl sulfurpentafluorides A process is described for the synthesis of an aryl sulfur pentafluoride compound. In one embodiment of the present invention, there is provided a process for preparing an aryl sulfurpentafluoride compound comprising: combining an at least one aryl sulfur compound w... | 03/21/2006 |
| 6992040 | Process for preparing a shell-type catalyst A process for preparing a shell-type catalyst which comprises applying to a substantially nonporous inorganic support material having a BET surface area of | 01/31/2006 |
| 6927191 | Oxidation catalyst An inside layer including zeolite and an outside layer including alumina and Pd are formed in a layered shape on a carrier, and Ag and Bi are simultaneously allowed to be carried on the inside and outside layers through impregnation. Thus, production of an alloy thr... | 08/09/2005 |
| 6894193 | Method for hydrogenating liquid organic compounds Liquid organic compounds are hydrogenated by a process in which the hydrogen present in the reactor contains proportions of at least one gas which is inert in the hydrogenation reaction. ... | 05/17/2005 |
| 6891067 | Optical polyimide precursor, optical polyimide compound and fabricating method thereof The present invention provides an optical polyimide precursor for use in making a polyimide. The precursor is defined by the following formula: wherein X is Cl, Br, oxo-halide, or fully halogenated alkyl, and A is a di... | 05/10/2005 |
| 6657085 | Process for the preparation of aniline compounds A process for the preparation of aniline compounds of formula: ##STR1## wherein n and R are as defined in claim 1, by reacting nitro compounds of formula: ##STR2## wherein n and R are as defined, with hydrazine at elevated temperature in the prese... | 12/02/2003 |
| 6479704 | Hydrogenation with monolith reactor under conditions of immiscible liquid phases The present invention relates to an improved for the hydrogenation of an immiscible mixture of an organic reactant in water. The immiscible mixture can result from the generation of water by the hydrogenation reaction itself or, by the addition of, water ... | 11/12/2002 |
| 6333434 | Preparation of trifluoromethylanilines The invention relates to a process for the preparation of trifluoromethylanilines of formula (I) ##STR1## wherein R1 is hydrogen, fluorine, chlorine, bromine, methyl, monochloromethyl, dichloromethyl, or formyl, and R2 is hydrogen, f... | 12/25/2001 |
| 6278022 | Process for the preparation of insecticidal phenylhydrazine derivatives Disclosed herein is an improvement in a method for making compounds having the structural formulae (I) or (II): ##STR1## wherein: X is a) phenyl; lower phenylalkoxy; phenoxy; or benzyl; or b) one substituent from group a) and one or more substituents sele... | 08/21/2001 |
| 6268533 | Formoterol process A method is disclosed for the preparation of optically pure isomers of formoterol by the reaction of an optically pure 4-benzyloxy-3-formamidostyrene oxide with an optically pure 4-methoxy--methyl-N-(phenylmethyl)benzeneethanamine followed by ... | 07/31/2001 |
| 6258982 | Process for the preparation of substituted aromatic amino compounds The present invention relates to a hydrogenation process for the preparation of aromatic amino compounds containing directly on the aryl ring or in a side chain one or more entities that may also undergo hydrogenation, such as carbon multiple bonds, nitri... | 07/10/2001 |
| 6232501 | Process for the cis-selective catalytic hydrogenation of cyclohexylidenamines This invention relates to a process for the cis-selective preparation of cyclic amines of the sertraline type by reductive alkylation of cyclic immines or of their precursors and for the catalytic hydrogenation in the presence of copper-containing catalys... | 05/15/2001 |
| 6140539 | Preparation of amines In a process for preparing amines, in which at least one compound containing at least one nitro group is reacted with hydrogen in the presence of a supported catalyst comprising, as catalytically active metal, nickel, if desired together with at least one... | 10/31/2000 |
| 6121492 | Method for preparing 2-trifluoro-methoxy-aniline This invention relates to a method for the preparation of a compound of formula I ##STR1## comprising the steps consisting in: a) optionally reacting a compound of general formula II: ##STR2## with a nitration reagent b) reducing the compou... | 09/19/2000 |
| 6096924 | Process for the catalytic hydrogeneration of aromatic nitro compounds One object of the invention is a process for the catalytic hydrogenation of aromatic nitro compounds in solution or in melt in the presence of hydrogen and at least one noble metal catalyst, nickel catalyst or cobalt catalyst, in which process a catalytic... | 08/01/2000 |
| 6077974 | Process for the continuous preparation of amino-halo-genophenyl alkyl thioethers Amino-halogenophenyl alkyl thioethers prepared in an advantageous manner by catalytic reduction of the corresponding nitro compound by the nitro compound being continuously hydrogenated with hydrogen in the presence of a supported noble-metal catalyst.... | 06/20/2000 |
| 6069278 | Aromatic diamines and polyimides based on 4,4'-bis-(4-aminophenoxy)-2,2' or 2,2',6,6'-substituted biphenyl This invention relates the novel diamines, the polyimide oligomers and the polyimides derived therefrom and to the method of preparing the diamines, oligomers and the polyimides. The thermoplastic polyimides derived from the aromatic diamines of this inve... | 05/30/2000 |
| 6034276 | Process for preparing 1-chloro-2,4-diaminobenzene Disclosed is an improved process for preparing 1-chloro-2,4-diaminobenzene by the selective hydrogenation of 1-chloro-2,4-dinitro-benzene wherein the hydrogenation is carried out in the presence of a modified Raney nickel catalyst containing about 70 to 9... | 03/07/2000 |
| 5962741 | Process for the production of aromatic halogen-amino compounds The present invention relates to a hydrogenation process for the production of aromatic halogen-amino compounds by means of catalytic hydrogenation on noble metal catalysts of corresponding aromatic halonitro compounds, characterised in that a rhodium, ru... | 10/05/1999 |
| 5877340 | Process for the preparation of substituted aromatic amino compounds The invention relates to processes for preparing substituted aromatic amino compounds which contain at least one unsaturated --CN bond or carbonyl group on the aromatic radical or in a side chain, by catalytic hydrogenation of appropriate substituted arom... | 03/02/1999 |
| 5872300 | Process for the preparation of 2-amino-6-chlorophenyl-alkylsulfanes, and 2-amino-6-chlorophenyl-isopropylsulfane 2-Amino-6-chlorophenyl-alkylsulfanes are prepared in a particularly advantageous manner by hydrogenating 2-chloro-6-nitrophenyl-alkylsulfanes catalytically in the presence of a solvent without the addition of a further sulfur compound, and the novel compo... | 02/16/1999 |
| 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 |
| 5840983 | Process for preparing 2-trifluoromethoxy-aniline 2-Trifluoromethoxy-aniline, which can be used as an intermediate for example for preparing pharmaceuticals and agrochemicals, is obtained in very good yields and high purity by nitrating in a first step 1,2-dichlorotrifluoromethoxy-benzene at temperatures... | 11/24/1998 |
| 5801284 | Hydrogenation of halonitroaromatic compounds Process for preparing haloaromatic amines by catalytic hydrogenation of the corresponding halonitroaromatic compounds, characterized in that iron-containing Raney nickel is used as catalyst, where the haloaromatic amines prepared can be used for the synth... | 09/01/1998 |
| 5744643 | Process for preparing aromatic amines The present invention relates to a process for preparing aromatic amines by reacting an aromatic nitro compound with carbon monoxide in a solvent mixture comprising water and a water-insoluble organic solvent by means of a catalyst comprising palladium an... | 04/28/1998 |
| 5629449 | Controlled feed process for making 3, 5-diaminobenzotrifluoride Disclosed is a method of making 3,5-diaminobenzotrifluoride from 4-chloro-3,5-dinitrobenzotrifluoride. A solution of 4-chloro-3,5-dinitrobenzotrifluoride in an alcohol is prepared. Separately, a slurry is prepared of a palladium catalyst on a suitable ... | 05/13/1997 |
| 5545754 | Process for the preparation of p-amino-phenols p-Amino-phenols are advantageously prepared by catalytic hydrogenation of the aromatic nitro compounds on which they are based in a reaction medium of aqueous sulphuric acid in the sense of a Bamberger rearrangement at elevated temperature by a procedure ... | 08/13/1996 |
| 5498794 | Process for preparing fluoroanilines The invention relates to a process for preparing fluoroanilines of the formula (I) Fn ArNH2 (I) in which n is 1, 2, 3 or 4, Ar is phenyl, naphthyl or pyridyl, and the remaining substituents on the A... | 03/12/1996 |
| 5484953 | O-phenylenediamines containing fluoroalkyl(ene) groups Novel o-phenylenediamines of the formula containing fluoroalkyl(ene) groups ##STR1## in which the symbols used have the meaning given in the description, processes for their preparation and their use as intermediates.... | 01/16/1996 |
| 5449831 | Process of preparing 2-methyl-3-aminobenzotrifluoride 2-methyl-3-aminobenzo-trifluoride is prepared with high yields and high productivity by first halogenating o-trifluoromethylbenzalhalide, then secondly hydrogenating 2-trifluoromethyl-4-halogeno-benzalhalide formed by the first reaction, then thirdly nitr... | 09/12/1995 |
| 5442114 | Process for producing aromatic amide compounds There is disclosed a process for producing an aromatic amide compound of the general formula (4), including the steps of subjecting an o-nitrophenol compound of the general formula (1) to catalytic reduction in acetone or an aromatic hydrocarbon solvent u... | 08/15/1995 |
| 5410085 | Process for the preparation of chlorine-substituted aromatic amines and of catalysts Chlorine-substituted aromatic amines are prepared by the hydrogenation of chlorine-substituted aromatic nitro compounds in the presence of a catalyst containing platinum and nickel and/or cobalt on an activated charcoal support, the platinum having been s... | 04/25/1995 |
