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6977315 Process for producing optically active nitroalcohols  
The present invention relates to a process for producing optically active β-nitroalcohols wherein nitroaldol reactions of aldehydes and nitroalkanes are carried out in the presence of a base and...
6358431 Calixarenes  
A method of imparting a water repellent surface to a hydrophilic substrate which comprises contacting the substrate with a solution or dispersion of a suitable calixarene in a liquid medium.
6265621 Process for producing halogenated phenol compounds  
The present invention provides a process for producing a halogenated phenol compound represented by the general formula [II]: ##STR1## wherein Q is a monovalent organic residue, A is, the same or...
5847231 Selective nitration of phenol derivatives  
Process for preparing 4-nitrophenol derivatives of formula (IV) with high selectivity, which comprises converting phenols to diphenyl oxalate derivatives of formula (III) and conducting nitration...
5817888 Bromination process  
A bromination process for organic compounds employs stabilized bromine chloride solutions as the brominating agent. Activated aromatic compounds such as anisole can be selectively monobrominated in...
5773651 Process for the preparation of fluorine-containing chemical compounds  
Process for the preparation of fluorine-containing compounds by reduction in a container provided with a stirrer, the stirrer being constructed entirely or partly of a carbon material.
5414148 Preparation of p-nitrophenolic compounds  
p-Nitrophenolic compounds, e.g., p-nitrophenol itself, are selectively prepared by (a) reacting a phenolic compound with a nitrosating agent in the presence of sulfuric acid, the concentration of...
5393776 Tocotrienol analogs in the treatment of hypercholesterolemia and hyperlipidemia  
This invention relates to structurally novel acyclic tocotrienol analogs, which are useful for cholesterol/lipid lowering in cases of hypercholesterolemia and hyperlipidemia, and for...
5371291 Synthesis of 4,6-diaminoresorcinol  
The invention is a new process for preparing 4,6-diaminoresorcinol, a precursor to polybisbenzoxazoles. The desired product is prepared from resorcinol by incorporating a halo group on the...
RE34745 High purity process for the preparation of 4,6-diamino-1,3-benzenediol  
High purity 4,6-dinitro-1,3-benzenediol is prepared by (a) contacting a 1,2,3-trihalobenzene with a nitrating agent and an acid under reaction conditions such that a...
RE34589 Aqueous synthesis of 2-halo-4,6-dinitroresorcinol and 4,6-diaminoresorcinol  
The displacement of halogen from a 1,2,3-trihalo-4,6-dinitroresorcinol can be carried out in an aqueous medium using alkali metal hydroxide to form 2-halo-4,6-dinitroresorcinol. The product is a...
5292967 Process for producing 2,3-difluoro-6-nitrophenol  
According to a process for producing isomer-free 2,3-difluoro-6-nitrophenol, 2,3,4-trifluoronitrobenzene is reacted with an aqueous solution of alkali metal or alkaline earth metal hydroxide in the...
5292932 Process for the preparation of 5-chloro-2-hydroxy-4-alkyl-benzenesulfonic acids  
Process for the preparation of compounds of the formula (1) ##STR1## in which R is an alkyl (C 1 -C 6 ) group and X is a hydrogen or alkali metal atom, in which compounds of the formula (2)...
5292966 Process for the preparation of 2-nitro-3, 6-dichlorophenol  
2-Nitro-3,6-dichlorophenol is prepared by sulfonation of 2,5-dichlorophenol and subsequent nitration and desulfonation, in which the nitration is carried out by metering in a nitrating acid...
5227535 Process for the preparation of 2-nitro-5-fluoro- or -5-chlorophenol  
The present invention relates to a process for the preparation of isomerically pure 2-nitro-5-fluoro- or -5-chlorophenol, by reacting 2,4-difluoronitrobenzene or 2,4-dichloronitrobenzene with...
5204242 Substituted phenols  
The present invention provides a colorimetric process for the detection of an oxidative coupling reaction in which a coupling component is reacted with a developer component in the presence of an...
5136109 Process for preparing 2,4-dichloro-3-alkyl-6-nitrophenols  
2-4-Dichloro-3-alkyl-6-nitrophenols which are useful as intermediate of cyan couplers in color photography are prepared by sulfonating 4-chloro-3-alkyl-phenols to obtain...
5012015 Process for producing 2,4-dichloro-3-alkyl-6-nitrophenol  
2,4-Dichloro-3-alkyl-6-nitrophenol, which is a precursor of 2,4-dichloro-3-alkyl-6-aminophenol useful for the production of a cyan coupler to be used with a sensitive material in the field of a...
4978808 Method of producing 2,2-bis(3-nitro-4-hydroxyphenyl)hexafluoropropane  
Disclosed herein is a method of producing 2,2-bis(3-nitro-4-hydroxphenyl)hexafluoropropane, which comprises (a) preparing 2,2-bis(4-hydroxyphenyl)hexafluoropropane and a lower fatty acid; and (b)...
4962198 Process for the hydroxylation of electrophilic aromatic compounds  
The invention relates to a generally applicable process for the hydroxylation of electrophilic aromatic compounds, according to which the electrophilic aromatic compounds are reacted with organic...
4960955 Process for making 4-chloro-2-methyl-5-nitro-phenol  
The process of making 4-chloro-2-methyl-5-nitro phenol (I) ##STR1## comprises nitrating a 4-chloro-2-methyl-phenyl sulfonate of the formula (II) at the 5 position ##STR2## in which R is a residue...
4954662 Selective chlorination of ortho-substituted phenols  
Ortho-substituted phenolic compounds, e.g., 2,6-dichlorophenol, are selectively chlorinated, e.g., into 2,4,6-trichlorophenol, with gaseous chlorine in either the molten state or in a solvent...
4943666 Process for producing nitrophenol compound  
An improved industrial process for producing a compound of the general formula: ##STR1## wherein R is an alkyl group having 1 to 4 carbon atoms which comprises reacting a compound of the general...
4885388 2-methyl-4-fluoro-phenols and their preparation  
New 2-methyl-4-fluoro-phenols and process for their preparation from 2-methyl-4-fluoro-phenol.
4879415 Process for the preparation of chloronitroanilines and chloronitrophenols  
The invention relates to a process for the preparation of chloronitroanilines or chloronitrophenols, which comprises chlorinating nitroanilines or nitrophenols in hydrochloric acid by adding...
4827047 Chlorination of nitrophenols  
The chloronitrophenols, e.g., 2,6-dichloro-4-nitrophenol (a known agrochemical/pharmaceutical intermediate), are efficiently prepared by chlorinating ortho- or para-nitrophenol with gaseous...
4723043 Nitration of phenolic compounds  
Substituted phenols are nitrated by contacting same with a 10 to 70% by weight concentrated aqueous solution of nitric acid. The subject nitration process is well adopted for the preparation, e.g.,...
4720595 Novel agents containing the compound 3-trifluoromethyl-4-nitrophenol  
Agents which contain a combination product of 30 to 90% by weight of 3-trifluoromethyl-4-nitrophenol, which contains 12 to 20% by weight of water, with 10 to 70% by weight of a basic salt of the...
4670608 Preparation of 2,4-dichloro-3-alkyl-6-nitrophenols  
2,4-Dichloro-3-alkyl-6-nitrophenols are prepared by chlorinating, with chlorine in the presence of a catalyst, 1-alkyl-4-nitrobenzenes having a C 2 -C 8 -alkyl radical until the content of...
4596893 2-trifluoromethyl-4,6-dinitro-phenol and derivatives thereof, process for the preparation thereof and herbicidal, acaricidal and crop regulation compositions containing same  
The present invention relates to 2-trifluoro-methyl-4,6-dinitro-phenol and derivatives thereof prepared by hydrolyzing 2-chloro-3,5-dinitrobenzotrifluoride with an alkali hydroxide or alkaline...
4581178 Addition of aldehydes to organic compounds having a carbon-hydrogen bond activated by a nitro or nitrile group  
Low valent transition metal complexes containing small cone angle phosphine or arsine ligands efficiently catalyze addition of aldehydes to compounds or groups having a C--H bond activated by a...
4558040 Miticidal (2-alkyl-3,4-dihydro-2H-1-benzopyran-8-yl)-diazenecarboxylic acid esters  
Certain miticidal (2-alkyl-3,4-dihydro-2H-1-benzopyran-8-yl)diazenecarboxylic acid esters.
4551264 Polyhalogenoaromatic compounds for liquid crystal compositions  
New polyhalogenoaromatic compounds of Formula I ##STR1## wherein Y and Z are each independently alkyl, alkoxy or alkanoyl each of 1 to 12 C atoms, --COOR 1 , --O--CO--R 1 , CN, NO 2 , NH 2 or OH; ...
4540832 Process for the preparation of 6-chloro-2,4-dinitrophenol  
A process for the preparation of 6-chloro-2,4-dinitrophenol in a high yield and in a high degree of purity by saponifying 2,4-dinitrochlorobenzene and/or 2,4-dinitrophenyl alkyl ethers of the...
4473713 Hydrolysis of aryl-aliphatic ethers  
At least one of the other functions comprising an aryl-aliphatic ether, e.g., veratrol, is catalytically hydrolyzed with water, e.g., to guaiacol, in the presence of a catalytically effective...
4347148 Full and lubricant compositions containing nitro phenols  
Nitro phenols of the general formula ##STR1## wherein R is an aliphatic substituent of at least about 40 carbon atoms, a, b and c are, for example, each 1, 2 or 3, and Ar is an aromatic moiety such...
4310711 Process for preparing 5-chloro-2-nitrophenol  
A process for preparing 5-chloro-2-nitrophenol from 2,4-dichloronitrobenzene and excess alkali metal hydroxide in the presence of aprotic polar solvents at 20° to 150° C.
4310702 Selective monochlorination of ketones and aromatic alcohols  
Sulfuryl chloride is reacted in the liquid phase with an organic reactant which is a ketone or aromatic alcohol unsubstituted on both ortho carbons in the presence of a moderator selected from the...
4283565 Process for preparing benzylalcohols  
There is described an essentially two step process for the preparation of benzylalcohols including those benzylalcohols having substituents on the benzyene ring by reaction of a substituted or...
4224244 9-Phenyl 5,6-dimethyl-nona-2,4,6,8 tetraenal or tetraenol derivatives  
Novel 9-phenyl 5,6-dimethyl-nona-2,4,6,8-tetraenoic acid, tetraenal or tetraenol derivatives useful as anti-tumor agents.
4120863 Fluorine-containing benzoxazoles  
Benzoxazoles substituted in the 2-position with a perfluoroalkylether radical and bis-benzoxazoles in which the 2-position carbon atoms of the benzoxazole rings are attached to one another with a...
4069340 Immonium salts and derivatives thereof  
There are provided: novel aryloxy immonium salts, prepared by the reaction of their corresponding haloformates with amides; and phenolic compositions corresponding to the aryloxy immonium salts....
4057419 2,4-Bis-(trifluoromethyl)-6-nitrophenol compounds and herbicidal compositions  
Novel 2,4-bis-(trifluoromethyl)-6-nitrophenol compounds of the formula ##STR1## in which X is hydrogen; M; HNR.spsp.+ 1 R 2 R 3 ; --COR 4 ; --COOR 5 ; N,N-dimethylaminocarbonyl; --SO 2 R 6 ...
4038328 Process for preparing 2-nitro-4,6-dichloro-5-methylphenol  
2-NITRO-4,6-DICHLORO-5-METHYLPHENOL IS PREPARED BY THE SULFONATION OF 4-CHLORO-5-METHYLPHENOL TO FORM 2-SULFO-4-CHLORO-5-METHYLPHENOL WHICH IS CHLORINATED TO 2-SULFO-4,6-DICHLORO-5-METHYLPHENOL...
4031249 Compositions containing certain 2,4-halo-6-nitrophenols or derivatives thereof and methods for using same to eradicate internal parasites in warm-blooded animals  
A composition of matter for treating warm-blooded animals to eradicate internal parasites comprising a compound chosen from the group consisting of 2,4-dibromo-6-nitrophenol ...
3985761 Nitrothiazolyl derivatives of nitrostyrene  
Hydroxy substituted nitrostyrene derivatives have been found to exhibit antibacterial and anthelmintic properties. Derivatives having a nitrothiazolyloxy moiety have low toxicity and a broad...
3954936 O-nitrosophenols as extractants for metal values  
O-Nitrosophenols adapted for the liquid-liquid extraction of metals, e.g., copper, from aqueous solutions and a nitrosation process for the preparation of the phenols.
3936447 7-Acylamino-desacetoxy-cephalosporanic acid esters and their production  
7-Acylamino-desacetoxy-cephalosporanic acid esters are produced by heating a sulfoxide of 6-acylaminopenicillanic acid ester at a temperature of from about 60°C to about 150°C in the presence of...
3929907 Halogenation of phenolic compounds  
Aromatic and heterocyclic compounds are halogenated by a combination of chlorine, bromine or iodine and hydrogen peroxide, preferably in a two-phase system containing water and an organic liquid.
3928470 Preparation of 2-nitrohalophenols  
The polyhalonitrobenzenes bearing but a single halogen atom at either, but not both, of those molecular sites ortho to the nitro substituent thereof, are dehalohydroxylated to form their...
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