Patents
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)
12/1992
12/26/1992CA2071718A1 Method of preparing 2-bromo-4,6-dinitromesitylene
12/23/1992EP0519807A1 Process for the dehydrochlorination of 1,1-bis(R-phényl)-2,2,2-trichloroethanes
12/23/1992CN1019538B Application for 2-(2'-nitrobenzoyl) -1,3-cyclohexanediones
12/16/1992EP0518493A1 Preparation of polycyclic dyes
12/16/1992EP0518151A1 Process for the preparation of nitrophenyl-alkylethers
12/15/1992CA2069457A1 Preparation of polycyclic dyes
12/02/1992CN1019296B Improved process for substituted indolinone derivatives
11/1992
11/24/1992CA1310666C Process for the manufacture of derivatives of benzoic acid
11/11/1992EP0272301B1 Polymerizable liquid crystal materials and polymers displaying liquid crystal phases
11/11/1992CN1066058A Preparation method of p-nitrobenzoic acid and electrolytic tank
11/10/1992US5162583 Benzylether derivatives
11/10/1992US5162568 Nitration of alkanols
11/03/1992US5160364 Thiophene substituted acrylic derivatives; insecticides, plant growth regulators
10/1992
10/27/1992CA1309401C Fungicides
10/21/1992EP0509241A2 A novel method for ether formation
10/13/1992US5155274 Catalyst for amination of unsaturated compounds with secondary amine
10/13/1992US5155234 Nitration of phthalic acid and phthalic anhydride using nitric acid
09/1992
09/22/1992US5149890 Process for the isolation of pure dinitrotoluenes
09/22/1992US5149882 Mixing with liquid solution, suspension, filtration
09/22/1992CA1307649C Process for removal of impurities in alkyl nitrite formation
09/16/1992CA2053997A1 Method for ether formation
09/09/1992CN1018181B High purity process for preparation of 4,6-diamiro-1, 3-benzenediol
09/01/1992US5144087 Process for the preparation of dibromonitro-alcohols and blends with dibromonitro-alcohols
09/01/1992CA1307007C Process for preparing 4,6-dinitroresorcinol
08/1992
08/12/1992EP0497989A1 Pollution-free process for producing aromatic nitro compound without using mineral acid
08/12/1992EP0497796A1 Method of preparation of fluorobenzenes.
08/11/1992US5137901 For binding 5-HT 1 receptors; treating central nervous system disorders
08/04/1992US5136109 Process for preparing 2,4-dichloro-3-alkyl-6-nitrophenols
08/04/1992US5136081 Fungicides
07/1992
07/29/1992EP0496370A2 Process for the preparation of o-nitrophenetole
07/29/1992CN1063098A Method for refining 4-nitro-m-cresel
07/22/1992EP0495425A2 Preparation of diphenyl ether
07/22/1992CN1062899A Process for continuous nitration of nitratable aromatic compounds
07/21/1992US5132423 Nucleophilic substitution reaction of alkali hydroxy- or mercaptoaromatic compound and heterocyclic substituted imide
07/15/1992EP0494620A2 Process for preparing trans-beta-aroylacrylic ester
07/15/1992CA2054227A1 Preparation of diphenyl ether
07/09/1992WO1992011229A1 Process for the preparation of bromonitro-alcohols, dibromonitro-alcohols and blends thereof
07/09/1992WO1992011228A1 A process for preparing dinitrotoluene
07/07/1992US5128120 Quantitative determination of compounds in blood or urine
07/07/1992CA1304753C Iodonium ylide antimicrobial compounds
06/1992
06/30/1992CA1304392C Process for the preparation of substituted 3,5- dichloro-2,4-difluoro-benzenes
06/25/1992WO1992011227A1 Method for the continuous nitration of nitrable aromatic compounds
06/25/1992DE4141624A1 New di:nitro tetra:fluoro di:benzo-di:oxocin for polyimide and ether prodn. - esp. di:nitro-bis:tri:fluoromethyl di:phenyl ether using benzoate catalyst
06/25/1992CA2099108A1 Method for the continuous nitration of nitrable aromatic compounds
06/24/1992EP0491600A1 Process for the regiospecific monofunctionalisation of a phenolic hydroxy group of a polyphenol
06/23/1992US5124476 Reacting dihalobenopropene with anhydrous mixture of nitrile and hydrofluoric acids, forming acid, esterifiying or amidating, dehalogenating
06/23/1992US5123955 Phenylalkenylcarboxylic acids and their esters
06/23/1992CA1303994C2 Pharmaceutical compositions containing 5-phenyl-1,3-dioxoalkenyl compounds
06/21/1992CA2056899A1 Process for the preparation of bromonitro-alcohols, dibromonitro-alcohols and blends thereof
06/09/1992US5120869 Herbicidal compounds
06/09/1992CA1303064C Process for the preparation of 2,4-dinitrophenyl ethers
06/03/1992CN1016868B 5-arylalkyl-4-alkoxy-2(5h)-furanones, process and intermediates for preparing thereof and use as pharmaceutical compositions
06/02/1992US5118880 Method of preparing 2-bromo-4,6-dinitromesitylene
06/02/1992CA1302430C Process for preparing 2,2-bis-(3-nitrophenyl)-hexafluoropropane, and 2,2-bis-(4-carboxy-3-nitrophenyl)-hexafluoropropane occurring as an intermediate
06/02/1992CA1302418C 3,5-disubstituted pyrocatechole derivatives
05/1992
05/27/1992EP0486866A1 Process for the isolation of purified dinitrotoluenes
05/26/1992US5117002 Preparation of diphenyl ether
05/19/1992CA1301175C Substituted 2,3-naphthalenedicarboxaldehydes
05/13/1992EP0296221B1 Process for preparing 4,6-dinitroresorcinol
05/12/1992US5113013 Process for preparing fluorine-containing organic compounds
05/12/1992US5112977 Photoinitiators, metallization of polymeric surfaces
05/12/1992US5112871 Anti-microbial bromo-nitro compounds
05/12/1992CA1300644C Process for the preparation of naphthacenes
05/05/1992CA1300172C Process for the preparation of 3,5-dichloro-2,4- difluoro-nitrobenzene
04/1992
04/30/1992DE4033613A1 Sepn. of mixts. contg. nitro:benzaldehyde isomers - by contacting with pentasil- and faujasite-type zeolite(s)
04/28/1992US5109020 Fluorinated cyclohexane derivatives, process and intermediates for their preparation and the use of the new fluorinated cyclohexane derivatives as fungicides and intermediates
04/14/1992US5104491 Method for purifying pentachloronitrobenzene by solid base treatment
04/01/1992CN1016059B Herbicide composition containing 1,3-cyclohexabenzophenone derivatives
03/1992
03/26/1992WO1992005141A1 Process for producing 2,3-difluor-6-nitrophenol
03/24/1992US5099079 Process for separating acid from nitro substituted aromatics using a molten nitrate salt
03/24/1992US5099078 Process for preparing dinitrotoluene
03/24/1992US5098576 Adsorbents for chromatography and adsorption processes
03/24/1992CA1297900C Preparation of (z)-2-(2-arylethenyl)arylcarboxylic acids
03/24/1992CA1297871C Fungicides
03/19/1992WO1992004313A1 Pollution-free process for producing aromatic nitro compound without using mineral acid
03/10/1992US5095157 Friedel-crafts catalyst
03/10/1992US5095144 Process for dimerizing aromatic halogen compound
03/10/1992US5094685 Substituted benzoyl derivatives and selective herbicides
03/10/1992CA1297132C Manufacture of organic nitro compounds
03/10/1992CA1297122C Hypofluorites and bis-hypofluorites, and process for preparing same
03/10/1992CA1297121C Process for the preparation of perhalohydrocarbon hypochlorites
03/10/1992CA1297120C Bromofluoroethylhypofluorite and process for its preparation
03/05/1992DE4027591A1 Chloro-fluoro-nitro- and di:fluoro-nitro-benzene(s) prepn.
03/04/1992EP0473464A1 Process for preparing 2-4-dichloro-3-alkyl-6-nitrophenols
03/03/1992US5092971 Bromination
02/1992
02/26/1992EP0472224A1 Fungicides
02/26/1992EP0164410B1 Destruction of dnpi in an all nitric acid nitration process
02/25/1992CA1296363C Process for preparing 2,2-bis-(4-hydroxy-3-nitrophenyl)- hexafluoropropane
02/19/1992EP0471043A1 Nitrate ester preparation
02/18/1992US5089652 Nitration using nitric acid an organic hyroxy containing conpound with the use of a solvent
02/18/1992CA1296013C Process for preparing novel n-(acyloxyalkoxy) carbonyl derivatives useful as bioreversible prodrug moieties for primary and secondary amine functions in drugs
02/12/1992EP0195053B1 Process for preparing 1,3-cyclohexanedione derivatives and intermediates therefor
02/11/1992US5087734 Crystal modification of magnesium salt of mono-p-nitrobenzyl malonate and process for producing the same
02/11/1992US5087725 Process for the preparation of alkyl nitrobenzoates
01/1992
01/29/1992EP0468927A2 Derivatives of carboxymethylcyclopropane
01/28/1992US5084478 Alkene, alkyne or cycloalkylene derivatives
01/28/1992CA2047901A1 Carboxymethylcyclopropane derivatives
01/28/1992CA1294982C Process for the manufacture of o-nitrobenzaldehyde
01/27/1992WO1992001666A1 A process for separating acid from nitro substituted aromatics using a molten nitrate salt
01/27/1992CA2085014A1 Process for separating acid from nitro substituted aromatics using a molten nitrate salt
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