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8173845 |
Process for producing 3-methylthiopropanal
A process is provided capable of producing 3-methylthiopropanal with subgeneration of high-boiling impurities being favorably inhibited. The process for producing 3-methylthiopropanal, includes...
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8101803 |
Process for the addition of thiolates to α,β-unsaturated carbonyl or sulfonyl compounds
Alkylthio substituted aldehydes, ketones, esters and sulfones are prepared by reacting α,β-unsaturated carbonyl and sulfonyl compounds with a sodium or potassium thiolate in the presence of a a...
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7799953 |
Method for producing 3-methylthiopropanal
A 3-methylthiopropanal is produced by a method comprising the step of supplying an acrolein and a methyl mercaptan together or sequentially with an acidic compound and a basic compound into a...
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7790934 |
Catalysts and process for dehydrating glycerol
A process for preparing acrolein from glycerol using an acidic solid-state catalyst which comprises tungsten compounds and further promoters.
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7662891 |
Amine salt compound of carboxylic acid having thermal dissociation portion and compounding agent for rubber vulcanization and rubber composition containing the same
To provide a compound which has a higher vulcanization efficiency and superior heat aging resistance compared to conventional compounding agents for rubber compositions and which is environmentally...
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7504542 |
Preparation of α-hydroxy ketones via carbene-catalyzed umpolung reaction of aldehydes
The present invention relates to the preparation of α-hydroxy ketones of the general formula I. In particular, the invention relates to novel imidazolinium carboxylate adducts and to a novel ...
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7476767 |
Alpha-hydroxy sulfonate aldehydes, germicidal compositions containing the alpha-hydroxy sulfonate aldehydes, or mixtures of alpha-hydroxy sulfonate aldehydes and phthalaldehydes, and methods of using the compounds or compositions for disinfection or sterilization
Disclosed herein are α-Hydroxy sulfonate aldehydes and synthesis methods therefor. Germicidal compositions including the α-hydroxy sulfonate aldehydes, are also disclosed. In one aspect, a g...
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7402705 |
Production of 3- (alkylthio) propanal
The invention relates to a process for the production of 3-(alkylthio)propanal from glycerol using catalysts.
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7256315 |
Process for the production of 3-methylthiopropanal
Process for the Production of 3-methylthiopropanal. A process for the production of 3-methylthiopropanal which reacting reaction medium comprising methyl mercaptan and acrolein in the presence of a...
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6924391 |
Alpha-amino,-thio,-oxo substituted ketones as phospholipase inhibitors
Inhibitors of the cytosolic phospholypase A2 enzymes are provided which are of use in controlling a wide variety of inflammatory diseases. The inhibitors of the present invention have the general...
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6713524 |
Reactive polymers
The invention relates to novel reactive polymers of formula wherein the variables are as defined in the claims. The polymers of the invention are useful for the modification of material surfaces...
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6465694 |
Method for preparation of polyethylene glycol aldehyde derivatives
Aldehyde derivatives of polyethylene glycols and methods of making thereof are disclosed. These aldehyde derivatives can be used to make polyethylene glycol-hydrazines, polyethylene glycol-thiols,...
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6379590 |
Method for making unsymmetrically substituted fluorenyl compounds for nonlinear optical applications
A new method for producing unsymmetrically substituted fluorenyl compounds, one step of which is the preparation of 2,7-disubstituted fluoren-9-one derivatives via the nucleophilic substitution of...
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6326519 |
Diallylic sulfides and processes for preparing the same
Diallylic sulfides represented by Formula I ##STR1##wherein: R1 and R2 are independently chosen from the group consisting of --CHO, --CH2 Cl, --CH2 Br, --CH2 I, --CH2 OH, CH2 OSO2 CF3, --CH2 OSO2...
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6225505 |
Trifluoro methylthiomethyl benzene derivatives and process for production same
The present invention lies in a process for producing a trifluoromethylthiomethylbenzene derivative represented by the following general formula (2): ##STR1##(wherein R is a hydrogen atom, a...
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6187963 |
Processes for the manufacture of acrolein derivatives
Processes are disclosed for the conversion of propylene to an acrolein derivative by converting propylene to acrolein and converting acrolein to the acrolein derivative. The processes utilize...
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6121496 |
Aromatic thioether acylation method
The present invention relates to a process for the acylation of an aromatic thioether. In its preferred variant, the invention resides in a process for the condensation of acetic anhydride or...
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6057481 |
Processes for the manufacture of methylmercaptopropanal
Processes are disclosed for the conversion of propylene to methylmercaptopropanal by converting propylene to acrolein and converting acrolein to methylmercaptopropanal. The processes utilize oxygen...
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6025526 |
Synthesis of substituted mercapto-benzaldehydes
Disclosed is a composition of (1) a substituted benzaldehyde having the general formula ##STR1## where X is a leaving group in the ortho or para position, (2) a mercaptide having the general...
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5973200 |
Process for the preparation of 2-hydroxy-4-(methylthio) butanoic acid or methionine by mercaptan addition
A process for the free-radical addition of a mercaptan to a nonconjugated olefinic substrate having a terminal carbon-carbon double bond is disclosed. 2-Hydroxy-4-(ethylthio)butanoic acid (HMBA) or...
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5948936 |
Method for production of sulfide group-containing thiol compound
A method for the production of a sulfide group-containing thiol compound which comprises causing alkylene sulfide to react with a thiol compound in the presence of at least one basic catalyst...
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5912388 |
Preparation of aldehydes or ketones from alcohols
A process for preparing an aldehyde or ketone comprising reacting a primary or secondary alcohol with oxygen in the presence of a base, a catalytic amount of a copper salt and a suitable lignad...
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5897750 |
Separation of acetone from isopropanol-water mixtures by extractive distillation
Acetone cannot be separated from a mixture of isopropanol and water because of the closeness of their boiling points. Acetone can be easily separated from isopropanol and water by extractive...
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5866596 |
3,4-diaryloxazolone derivatives, their methods of preparation and their uses in therapeutics
The present invention relates to the derivatives of formula: ##STR1## and to their use in therapeutics, especially as drugs with anti-inflammatory and analgesic properties.
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5808164 |
Process for producing aromatic sulfides
A process which can be used to produce an aromatic sulfide compound having the formula of (R4-n)(Xn)(W)Ar--S--R' is provided. The process comprises contacting, in the presence of a surfactant, a...
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5663409 |
Process for the preparation of 3-(methylthio) propanal and 2-hydroxy-4-(methylthio) butanenitrile
Catalytic processes for the preparation of 3-(methylthio)propanal and 2-hydroxy-4-(methylthio)butanenitrile using novel addition catalysts are disclosed. The novel addition catalysts include:...
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5610198 |
Anti-mycobacterial compositions and their use for the treatment of tuberculosis and related diseases
Compounds, pharmaceutical compositions, and methods for the treatment of mycobacterial diseases, such as tuberculosis and leprosy, are provided. Use of the compounds for promoting an antiseptic...
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5534557 |
Onium salt, photopolymerization initiator, energy ray-curing composition containing the initiator, and cured product
The composition of the present invention is excellent in compatibility, transparency and curability and give a cured coat of excellent gloss and of less smell, and cured products of excellent...
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5510538 |
Process for the oxidation of primary and secondary alcohols to aldehydes and ketones and for the oxidation of 1,2-diols to α-ketols and α-diketones
A process for the selective oxidation of a primary or secondary alcohol to an aldehyde or ketone and for the oxidation of a 1,2-diol to an α-ketol or α-diketone, which comprises contacting the a...
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5478959 |
Method for preparing 1,2-dithiins and precursors of 1,2-dithiins
A method for preparing 1,4-(Z,Z)-disubstituted-1,4-disulfurated-1,3-butadienes is disclosed. The butadienes can be further elaborated to provide 3,6-unsymmetrically-substituted-1,2-dithiins. Also...
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5427701 |
Substituted phenols as stabilizers
Novel compositions are described which comprises an elastomer or a lubricant and at least one compound of the formulae I or II ##STR1## The symbols R1, R2, R3, Z1 and Z2 are as defined in claim...
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5382686 |
Process for preparing nitrodiphenyl (thio) ethers
Nitrodiphenyl(thio) ethers in which the nitro group is in the ortho- or para-position with respect to the ether oxygen or ether sulphur can be prepared from halonitrobenzones in which the nitro...
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5347050 |
3-aminopropoxyphenyl derivatives, their preparation and pharmaceutical compositions containing them
The compounds of formula I, ##STR1## wherein the substituents have various significances, and physiologically acceptable hydrolyzable derivatives thereof having the hydroxy group in the 2 position...
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5321046 |
Hypocholesterolemic unsymmetrical dithiol ketals
Disclosed herein are novel unsymmetrical dithiol ketals which are useful in the treatment or prevention of hypercholesterolemia, hyperlipoproteinemia, and atherosclerosis.
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5298630 |
Processes for producing 2-substituted benzo[B]thiophene
A 2-alkylthiobenzaldehyde of general formula (I) is reacted with a halo compound of general formula (II) to produce a 2-substituted benzo[b]thiophene of general formula (III): ##STR1## wherein R1...
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5276147 |
Compounds and complexes useful in medical imaging
The subject of the present invention is compounds which correspond to the following general formula: ##STR1## in which R1 and R3 independently of one another represent H, an alkyl, alkenyl,...
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5274002 |
Trisubstituted phenyl analogs having activity for congestive heart failure
Novel trisubstituted phenyl analogs are now found to have activity as for the treatment of congestive heart failure.
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5264630 |
Halo-substituted thiobutanals
Compounds of formula I ##STR1## wherein R is C1 -C4 alkyl or benzyl, are prepared by reacting a butanal of formula II ##STR2## wherein X and Y are each independently of the other chloro, bromo or...
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5252714 |
Preparation and use of polyethylene glycol propionaldehyde
A new polyethylene glycol derivative (PEG) having the property of not being destroyed by water and also being able to retain reactivity in water and selectively react with amine groups. Also...
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5225602 |
Phenylacetaldehydes and the preparation of phenylacetaldehydes
Phenylacetaldehydes of the structure (I) ##STR1## where the substituents X are 2,4-dichloro, difluoro, trifluoro, tetrafluoro, p-trifluoromethyl, 2-methyl-4-fluoro, haloalkoxy or haloalkylthio...
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5191124 |
Sulfonium salts having acid-labile groups
Sulfonium salts of the general formula ##STR1## where R1, R2 and R3 are identical or different and are aliphatic and/or aromatic radicals which may contain heteroatoms, or two of the radicals R1...
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5169974 |
Process for manufacturing aryloxyaldehydes
The invention concerns a novel process for the manufacture of various aryloxyaliphatic aldehydes and related arylthio analogues, which are useful as chemical intermediates. The process involves...
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5132423 |
Method for conducting organic reactions using guanidinium salt as phase transfer catalyst
Reactions between a solid polar and a non-polar compound, especially nucleophilic aromatic substitution reactions between an alkali metal salt of a hydroxyaromatic compound or thio analog thereof...
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5128479 |
Oxidized diphenylheteroalkanes
Oxidized diphenylheteroalkanes of the formula I ##STR1## where R1 to R6 and A have the meanings specified in the description, and the preparation thereof are described. The substances are suitable...
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5097068 |
Trisubstituted benzoic acid intermediates
Novel trisubstituted benzoic acid intermediates which are useful in the preparation of certain herbicidal 2-(2,3,4-trisubstituted benzoyl)-1,3-cyclohexandediones. The intermediate benzoic acids of...
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5082976 |
Process for the preparation of benzaldehydes
Benzaldehydes of the formula ##STR1## can be obtained by reaction of substituted β-amino-styrenes of the formula ##STR2## in which R1, R2, R3, R4, R5, R8, R9, R10, m, n and o have the scope of ...
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5082974 |
3-halogeno-2,3-diphenylacrylaldehyde derivatives, process for preparing the same and a pharmaceutical composition for treating hyperlipidemi
3-Haolgeno-2,3-diphenylacrylaldehyde derivatives represented by the formula ##STR1## wherein R is an alkyl group having 1 to 6 carbon atoms, X and Y each represent a halogen atom, and n is 0, 1, or...
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5043268 |
Substrates and inhibitors for prenyl cysteine methyltransferase enzymes
Compounds of the formula: ##STR1## in which: R1 is alkyl of 1 to 3 carbon atoms; R2 is --COX; wherein X is hydroxy, methyl, amino, thio, H--N--(alkyl of 1 to 3 carbon atoms), N--(alkyl of 1 to 3...
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5026916 |
Process for the preparation of 1-alkylthio-and 1-benzylthio-1-formylcyclopropanes
Compounds of formula I ##STR1## wherein R is C1 -C4 alkyl or benzyl, are prepared by reacting a butanal of formula II ##STR2## wherein X and Y are each independently of the other chloro, bromo or...
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5017718 |
Process for preparing polyfluoroalkyl-substituted compounds
A process for preparing a perfluoroalkyl-substituted compound is disclosed. The process comprises reacting a halopolyfluoroalkane having 1 to 20 carbon atoms with a compound selected from the group...
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