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6808616 |
Process for the preparation of 5-aminosalicyclic acid
The present invention relates to a new process for the electrochemical preparation of p-aminophenols, especially 5-aminosalicylic acid. The process can be performed at a low temperature of below...
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6663764 |
Process for the preparation of glycine derivatives and use thereof
Process for the preparation of glycine derivatives, which comprises electrochemically oxidizing β-hydroxyethylammonium compounds to give the corresponding acids.
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6468433 |
Method for disinfecting liquids and gases and devices for use thereof
A method for disinfecting liquids and gases includes the steps of distributing at least one optical fiber in the region containing the liquids or gases to be disinfected; aligning at least one...
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6315884 |
Method for producing phthalides
A process for preparing phthalides by I. reducing phthalic acid or phthalic acid derivatives, where the carboxyl groups may be replaced by units which can be derived from the carboxyl groups by...
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6294069 |
Method for preparing 2-aryl or 2-heterocyclyl chiral propionic acids and their esters
A process for the preparation of chiral 2-aryl or 2-heterocyclyl-propionic acids of the formula ##STR1## wherein the substituents are as defined in the specification.
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6193681 |
Septicemia prevention and treatment system
A method and apparatus for preventing and treating septicemia in patient blood. The extracorporeal system includes an anti-microbial device to kill at least 99% of bloodborne microorganisms, a...
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6159352 |
Process for the electrochemical synthesis of N-acetylcysteine from cystine
The process comprises: (A) obtainment of N-acetyl-cysteine from L-cystine, by means of the following steps: (i) acetylation of L-cystine to produce N-acetyl-cystine; (ii) electroreduction and...
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5820742 |
Electrodeposition coating method and electrodeposition coating agent
An electrodeposition coating method characterized in that in electrodeposition coating of a water soluble composition of a polyimide precursor which is prepared by using...
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5643438 |
Process for the preparation of substituted diamino-dicarboxylic acid derivatives
The invention relates to a new process for the preparation of substituted diaminodicarboxylic acid derivatives of the formula ##STR1## in a high yield by a modified Kolbe synthesis.
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5627302 |
Asymmetrically substituted diaminodicarboxylic acid derivatives
The invention relates to novel asymmetrically substituted diaminodicarboxylic acid derivatives of the formula ##STR1##
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5364851 |
Conformationally restricted biologically active peptides, methods for their production and uses thereof
Electrochemical methods, preferably the Kolbe coupling reaction, are utilized to create intramolecularly bridged peptides, segments or peptide isosteres which are conformationally restricted and...
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5188707 |
Process for chemically hardening wood
A method of hardening wood using a pulping agent for the chemical separation of lignin from cellulose in the wood without damage to either component. The pulping agent comprises the reaction...
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4927508 |
Alkyl 2-fluoro-1-methoxyethylcarbamates
Alkyl esters of 2-fluoro-1-methoxyethylcarbamic acid, which are useful intermediates in the preparation of compounds, such as 4-amino-5-fluoropentanoic acid, are prepared by the electrochemical...
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4830716 |
Preparation of pharmaceutical grade amino acid chelates
Pharmaceutical grade amino acid chelates, free of interfering anions, are made by reacting an amino acid ligand with a metal member selected from the group consisting of elemental metals, metal...
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4800012 |
Electrochemical process for the replacement of halogen atoms in an organic compound
The existing processes for the preparation of halogenoacrylic acids and deuterated derivatives thereof have to be carried out using chemicals which are in some cases very toxic or very expensive....
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4764263 |
Electrochemical synthesis of substituted aromatic amines in basic media
Substituted amino aromatic compounds such as 3-amino-4-hydroxybenzoic acid are prepared by electrolytically reducing the corresponding nitro aromatic compound in a basic medium at temperatures...
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4759832 |
Preparation of biscarbamates and novel biscarbamates
Biscarbamates, including novel one, of the general formula ##STR1## where R is alkyl of 1 to 8 carbon atoms and X is a hydrocarbon radical of 2 to 60 carbon atoms in which one or more carbon atoms...
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4718994 |
Method for preparing hydroxy compounds of aromatic and heteroaromatic series
A method for perparing hydroxy compounds of the aromatic and heteroaromatic series of the general formula: ##STR1## wherein when R 1 --COOH, --CH 2 CH(NH 2 )COOH then R 2 --OH, --H,...
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4670112 |
Process for preparing p-amino phenols by electrolysis
p-Amino phenols of the formula ##STR1## wherein R 1 nd R 2 are independently hydrogen, optionally substituted alkyl, halogen, COOH, SO 3 H or NO 2 , are produced by electrolytic reduction of...
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4661217 |
Preparation of carbamic acid esters
Carbamic acid esters (I) R 1 NHCOOR 2 (I) wherein R 1 is H, alkyl, cycloalkyl or alkylaryl and R 2 is alkyl, are prepared by electro-oxidation of a...
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4599152 |
Pure amino acid chelates
Pure amino acid chelates and a method of their production are disclosed. The amino acid chelates are free of contaminating inorganic anions. The chelate consists of a metal ion comprising iron,...
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4589963 |
Process for the conversion of salts of carboxylic acid to their corresponding free acids
There is described a process for converting salts of monobasic amino acids to their free acids by treatment under electrolytic methods wherein electrical power requirements are reduced,...
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4566956 |
Electrochemical conversion of soluble salts of insoluble acids to their acid form
A process is disclosed for converting water soluble salts of insoluble organic acids to their insoluble acid form employing electrochemical techniques.
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4529488 |
Process for depositing salts
A process for depositing a salt by applying an electric current or voltage to at least one pair of electrodes placed in a supersaturated aqueous solution or supercooled molten liquid of an...
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4505788 |
Production of p-aminobenzoylglutamic acid by electrochemical reduction
Disclosed is a method of producing p-aminobenzoylglutamic acid which comprises electrochemically reducing p-nitrobenzoylglutamic acid and/or p-hydroxyaminobenzoylglutamic acid using a cathode of a...
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4496440 |
Oxidation of hydrophobic --CH.sub.2 OH compounds at oxidized nickel anodes
Mono- or dimethylol compounds having water solubilities of 3 grams or less per 100 grams of water are electrochemically oxidized to the corresponding mono- or dicarboxylic acids at activated nickel...
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4490221 |
Process for preparing iodothyronines and iodothyroacetic acids by electrochemical reduction at controlled potential
The invention relates to a process for preparing tri-iodo-, di-iodo- and mono-iodothyronines and tri-iodo, di-iodo and mono-iodothyroacetic acids, respectively from thyronine, triiodo or...
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4454012 |
Process for the preparation of methionine
Crystalline methionine is prepared from an alkali metal methioninate by continuously electrolyzing an aqueous solution of the said alkali metal methioninate and a support electrolyte in an...
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4430262 |
Preparation of isocyanates and/or derivatives thereof
Isocyanates and derivatives thereof are prepared by oxidative conversion of compounds having at least one group ##STR1## wherein X represents OY or ##STR2## wherein Y is H, a metal ion or group NR...
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4304642 |
Electrochemical additions to alkenes
Organic compounds having vicinal functional groups, such as amidothioethers and esterthioethers, are prepared by electrochemically oxidizing an organic disulphide, an organic diselenide, a...
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4248677 |
Process for producing alpha-aminocarboxylic acids and salts thereof
This invention relates to a process for producing alpha-aminocarboxylic acids and salts thereof. More specifically, this invention relates to a process for producing alpha-aminocarboxylic acids or...
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4208255 |
Process and device for the production of metal-complex compounds suitable for electroless metal deposition
Metal-complex compounds suitable for use in the electroless deposition of said metal are formed in aqueous solution by a method which comprises providing an aqueous solution of the complexing...
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4146735 |
Preparation of α,β-unsaturated carboxylic acids via Mannich intermediates
A process for the preparation of a α,β-unsaturated carboxylic acid by reacting formaldehyde, another aldehyde and a mineral acid salt of a secondary amine to form an intermediate Mannich base...
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4024032 |
Electrochemical acyloxylation of certain aromatic compounds
This invention provides a process for the electrochemical acyloxylation of aromatic compounds ring-substituted with an electron-withdrawing moiety and having a replaceable nuclear hydrogen. An...
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3647422 |
RECOVERY OF SILVER, POLYESTER AND AMINO ACIDS FROM PROCESSED FILM
Recovery of silver, polyester and amino acids from processed silver halide gelatin photographic film.
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3466312 |
DERIVATIVES OF DIALKYL-CYSTEINES AND ALLIED COMPOUNDS
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3448019 |
PROCESS FOR MAKING CARBAMATES
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3431186 |
ELECTROLYTIC PROCESS FOR THE CLEAVAGE OF THIOL ESTERS OF AROMATIC CARBOXYLIC ACIDS
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2907703 |
Method for the production of cysteine hydrochloride
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2834726 |
Electrolytically dissolving iron
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3776825 |
Title is not available
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