| Patents for C07C 201 - Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton (5,786) |
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| 01/22/1992 | EP0467742A1 Process for the preparation of fluor derivatives |
| 01/21/1992 | US5082976 Oxidation of aminostyrenes |
| 01/14/1992 | US5081315 Nitro-substituted, amine intermediates for monomers for heat resistant polyamides or polyimides |
| 01/14/1992 | US5081288 Process for the preparation of substituted 3,5-dichloro-2,4-difluoro-benzenes |
| 01/09/1992 | WO1992000270A1 Process for producing chlorofluoronitro benzenes and difluoronitro benzenes |
| 01/02/1992 | DE4020130A1 Prepn. of chloro-fluoro and di:fluoro-nitro-benzene(s) - by heating a di:chloro-nitro-benzene with alkali fluoride in presence of catalyst |
| 12/24/1991 | US5075513 Fungicides |
| 12/24/1991 | US5075510 Process for the preparation of bromonitro-alcohols |
| 12/24/1991 | CA1293519C Process for extracting nitrohydroxyaromatics from aqueous solutions |
| 12/18/1991 | EP0461531A2 Process for the purification of 2-chloro-5-nitrobenzaldehyde or their acetals |
| 12/17/1991 | US5073184 Agricultural fungicides, insecticides, plant growth regulators |
| 12/11/1991 | EP0452411A4 Acid catalyzed process |
| 12/11/1991 | CN1015044B Preparation of 2-(2-nitrobenzoyl)-1, 3-cyclohexadione compounds, and uses thereof |
| 12/10/1991 | US5072061 1,14-bis(4-nitrophenyl)-1,3,5,7,9,11,13-tetradecaheptaene and preparation method thereof |
| 12/10/1991 | US5072056 Synthesis of 2-phenyl-1,3-propanediol |
| 12/10/1991 | US5072053 1,3-di-arylmethoxy-4,6-dinitro-benzenes, process for their preparation and process for the preparation of 4,6-diaminoresorcinol |
| 11/26/1991 | US5068441 N-benzoyl-n'trihalo-haloalkoxyphenylureas and pesticidal compositions containing them |
| 11/12/1991 | CA1292006C Process for the production of diisocyanates, selected diisocyanates produced thereby and the production of polyurethane plastics therefrom |
| 11/05/1991 | US5062884 N-substituted 3,4,5,6-tetrahydrophthalimides and their intermediates |
| 10/31/1991 | WO1991016286A1 PROCESS FOR PRODUCING α-FLUOROSTYROLS |
| 10/31/1991 | DE4013305A1 Verfahren zur herstellung von (alpha)-fluorstyrol Process for the preparation of (alpha) -fluorstyrol |
| 10/23/1991 | EP0452411A1 Acid catalyzed process |
| 10/15/1991 | US5057618 Complex compounds containing sulfonated phenyl phosphanes |
| 10/15/1991 | US5057222 Purification of PCNB by solvent extraction |
| 10/09/1991 | EP0253837B1 Catalytic method for producing fluoroaromatic compounds using branched alkyl pyridinium salts |
| 10/01/1991 | US5053073 Thiophene derivatives useful as fungicidal, insecticidal or plant growth regulating agents |
| 10/01/1991 | CA1289974C Preparation of chlorobenzotrifluoride compounds |
| 10/01/1991 | CA1289969C Substituted crotonates and fungicides containing them |
| 09/19/1991 | WO1991013828A1 Process for conditioning waste sulphuric acid |
| 09/17/1991 | CA1289141C Process for the production of high energy material |
| 09/05/1991 | DE4006665A1 Verfahren zur konditionierung von abfallschwefelsaeure A method of conditioning abfallschwefelsaeure |
| 09/04/1991 | CN1054247A Process for the production of dinitrotoluene or mononitrobenzene |
| 08/27/1991 | US5043489 Reacting alkali metal hydroxide with nitroalkane; halogenation |
| 08/21/1991 | EP0253838B1 Catalytic method for producing fluoroaromatic compounds using n-sec-alkyl pyridinium salts |
| 08/21/1991 | EP0252964B1 Catalytic method for producing fluoroaromatic compounds using substituted pyridinium salts |
| 08/20/1991 | US5041691 Aldol condensation of nitroparaffins |
| 08/20/1991 | US5041681 Chemical process |
| 08/20/1991 | US5041618 α-arylacrylates and fungicides containing these compounds |
| 08/20/1991 | US5041604 Process for producing di(aryloxy)alkane |
| 08/08/1991 | WO1991011429A1 Process for purifying aromatic nitration products |
| 08/07/1991 | EP0440010A2 Process for the manufacture of nitrophenetole |
| 08/06/1991 | US5037994 Regioselective nitration of diphenyl compounds |
| 08/06/1991 | US5037968 Ion Selective Membranes Of Ion Selective Electrodes; Color Indicators |
| 07/31/1991 | EP0438715A2 1,1-Bicyclo-substituted fluorinated cyclopentanes and method for their production |
| 07/23/1991 | CA2008342A1 Process for the production of dinitrotoluene or mononitrobenzene |
| 07/18/1991 | WO1991010640A1 Nitrate ester preparation |
| 07/18/1991 | CA2050288A1 Nitrate ester preparation |
| 07/16/1991 | US5032590 Substituted hydroxylamines |
| 07/10/1991 | EP0436443A2 Nitration process |
| 07/09/1991 | US5030776 Vapor phase nitration of aromatics with nitric acid, carrier for sulfuric acid catalyst, feeding sulfuric acid continuously or intermittently during nitration |
| 07/09/1991 | US5030769 Continuous direct preparation of nitrophenols |
| 07/03/1991 | EP0435659A2 Preparation process of bis(3-nitrophenoxy) compound |
| 06/25/1991 | CA1285287C Cycloalkyl-substituted-4-aminophenyl derivatives and process for their preparation |
| 06/19/1991 | EP0432275A1 Substituted bicycloheptandione derivatives. |
| 06/19/1991 | EP0408759A4 Method of obtaining bromated aromatic and heterocyclic combinations containing acceptor groups |
| 06/12/1991 | EP0431328A2 Fungicides |
| 06/05/1991 | EP0430434A2 Process for the preparation of fluoroaromatic and fluoroheteroaromatic compounds |
| 06/05/1991 | EP0430001A1 Process for preparing benzaldehydes |
| 06/04/1991 | US5021581 Fungicides |
| 06/04/1991 | CA1284651C Pharmaceutical compositions containing 5-phenyl-1, 3- dioxoalkenyl compounds |
| 06/04/1991 | CA1284650C Process for the preparation of 5-nitro-1,4-naphthoquinone |
| 05/30/1991 | WO1991007376A1 Aqueous synthesis of 2-halo-4,6-dinitroresorcinol and 4,6-diaminoresorcinol |
| 05/29/1991 | EP0429083A1 Preparation of 4,6-dinitro-2-halo-1,3-benzenediol |
| 05/28/1991 | US5019659 Method of separating 2-nitrosophenol isomer from admixture with 4-nitrosophenol isomer |
| 05/15/1991 | EP0426846A1 Fluorinated-aromatic sulfonic acid catalyst, process for its production, and its use |
| 05/14/1991 | US5015755 9-anthrylalkyl compounds |
| 05/07/1991 | CA1283926C Process for making 1,3-dioxane derivatives |
| 05/02/1991 | EP0425265A1 Aromatic diamine compounds, bismaleimide compounds, thermosetting resins forming compositions therefrom, resins therefrom, and methods for their preparation |
| 04/30/1991 | US5012019 Removing Water By-Product By Reaction With Magnesium Nitrate Trihydrate; Removal Of Acids Using An Ionic Or Nonionic Absorbent |
| 04/30/1991 | US5012015 Nitrading a trichlorobenzene with mixed acid, hydrolysis |
| 04/28/1991 | WO1991006518A1 Method of preparation of fluorobenzenes |
| 04/28/1991 | CA2070412A1 Process for the preparation of fluorobenzenes |
| 04/24/1991 | CN1012433B Improvements in or relating to leukotriene antagonists |
| 04/16/1991 | US5008468 Sulfonic acid groups bonded to component containg tetravalent metal ion and group 5 element; used for olefin digomerization, polymerization, alkylation |
| 04/16/1991 | US5008456 Diamino compounds, dinitro compounds, diol compounds and a process for preparing the diamino compounds |
| 04/10/1991 | EP0421629A1 Sulphuric acid recovery process |
| 04/09/1991 | US5006325 Process for the recovery of nitric acid |
| 04/09/1991 | CA1282800C Acid catalyzed process |
| 04/02/1991 | US5004846 Process for producing nitrobenzenes |
| 03/19/1991 | US5001286 Process for separating sulphuric acid and nitric acid from dinitrotoluene mixtures obtained during the nitration of toluene |
| 03/19/1991 | US5001285 Process for the bromination of nitro-alcohols |
| 03/19/1991 | US5001279 Aqueous synthesis of 2-halo-4,6-dinitroresorcinol and 4,6-diaminoresorcinol |
| 03/19/1991 | US5001272 Process for the production of dinitrotoluene |
| 03/19/1991 | US5001209 Non-linear optical active diols and polyurethanes prepared therefrom |
| 03/19/1991 | CA1281742C High purity process for the preparation of 4,6- diamino-1,3-benzenediol |
| 03/06/1991 | EP0415354A2 Process for the recovery of nitric acid |
| 03/06/1991 | EP0415214A2 Method for the production of derivatives of alpha-fluoroacrylic acid |
| 03/05/1991 | US4997987 Preparation of 1,3,5-triamino-2,4,6-trinitrobenzene from 3,5-dichloroanisole |
| 03/05/1991 | US4997954 Reductive cyclizatin, dehalogenation, amination |
| 03/05/1991 | CA1281032C Process for the preparation of benzylidene compounds |
| 02/26/1991 | US4996376 Reacting nitrotoluene with nitric acid in the presence of an inorganic and acidic solid |
| 02/20/1991 | EP0413192A1 Method of making 1,1'-oxybis(3-nitro-5-Trifluoromethyl)benzene |
| 02/19/1991 | CA1280441C Meta-substituted dioxa-alkane carboxylic acids, esters, amides and salts of diphenyl ethers |
| 02/18/1991 | CA2021725A1 Method of making 1,1'-oxybis (3-nitro-5-trifluoromethyl)-benzene |
| 02/12/1991 | US4992603 Nitriding ethanol, acetic acid, or acetaldehyde |
| 02/12/1991 | CA1280124C Process for the preparation of 4-fluoroanilines from 4-halogenonitrobenzenes |
| 02/05/1991 | US4990670 Method of making 1,1'-oxybis (3-nitro-5-trifluoromethyl)-benzene |
| 02/05/1991 | US4990659 Process for the manufacture of derivatives of benzoic acid |
| 02/05/1991 | US4990633 Fluorinated bisaryloxy-substituted alkenes, process for their preparation and their use |
| 01/30/1991 | EP0410191A1 Fluorinated cyclohexane derivatives, process and intermediates for their preparation and use of the fluorinated cyclohexane derivatives as fungicide and intermediates |