Matches 251 - 300 out of 695 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >


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4537723 Derivatives of leukotrienes A and C  
The present invention provides novel derivatives of leukotrienes A and C which are useful in inhibiting the smooth muscle contracting effects of SRS-A; inhibiting platelet aggregation; and...
4536591 Insecticidal [1,1'-biphenyl]-3-ylmethyl esters  
[1,1'-Biphenyl]-3-ylmethyl pyrethroid esters, as well as processes, uses, and intermediates thereto, are disclosed. The [1,1'-biphenyl]-3-ylmethyl pyrethroid esters control a broad spectrum of...
4531010 Ester curing agent for fluorocarbon polymer coating composition  
A curing agent for fluorocarbon polymer coating compositions having the formula ##STR1## where R is R1 NH, R1 is an aliphatic or cycloaliphatic hydrocarbon radical, R2 is C or an aliphatic...
4522749 Process for augmenting or enhancing the aroma of a fragrance by adding a vinylcyclopropane compound  
Novel 2-vinyl-1-ketocyclopropane-1-carboxylates and 2-ethyl-1-ketocyclopropane-1-carboxylates useful as fragrance chemicals, pesticides, herbicides and chemical intermediates are provided. The...
4521612 Process for the separation of esters  
The present invention relates to a process for the selective separation of esters of the general formula II A--COOR1 IIfrom mixtures containing the cyclopropane carboxylic acid esters of the...
4520209 Process for cyclizing upsilon-chlorocarboxylic acids  
γ-chlorocarboxylic acid methyl or ethyl esters are cyclized to the corresponding cyclopropane carboxylic acid esters by employing the sodium or potassium alcoholate of methanol or ethanol in the ...
4518797 Cyclopropanecarboxylate pesticides and their preparation  
Compounds of the formula ##STR1## wherein R1 is an acyl group or certain optionally halo-substituted hydrocarbyl groups, and X is --CH2 CH(OCH3)2, --CH2 CHO, --CHCHOR2 in which R2 is acyl, -...
4518791 Preparation of menthyl permethrate  
A process for the preparation of menthyl permethrate comprises reacting methyl permethrate or ethyl permethrate with menthol in the presence of 1 to 30 mol % of an alkali metal alcoholate, relative...
4507317 Acaricidal 2,2'-bridged[1,1'-biphenyl]-3-ylmethyl esters  
2,2'-Bridged[1,1'-biphenyl]-3-ylmethyl carboxylates and insecticidal compositions containing these esters are useful for the control of a broad range of insects and acarids. Certain...
4506091 Removal of catalyst residues from polyesters  
A process for preparing esters which comprises reacting a polycarboxylic acid with an excess of alcohol and in the presence of an organotitanate catalyst, treating the crude mixture with a suitable...
4500733 Process for preparing dihalovinylcyclopropanecarboxylic acids  
A cyclopropanecarboxylic acid of the formula ##STR1## is prepared by the reaction of a compound of the formula ##STR2## with an alkali metal hydroxide or alkaline earth metal hydroxide in an ether...
4496389 Amide derivatives of N-trifluoroacetyl-N-phosphonomethylglycine, herbicidal compositions and use  
This disclosure relates to alkyl N-trifluoroacetyl-N-phosphonomethylglycine amide and hydrazide derivatives, to herbicidal compositions containing same and to the herbicidal use thereof. These...
4496584 Amidine derivatives with anti-complement activity  
Amidino compounds represented by the formula ##STR1## and pharmaceutically acceptable acid addition salts thereof are novel compounds and are useful as powerful antitrypsin, antiplasmin,...
4496586 Cyclopropanecarboxylates, their production and insecticide containing them as an active ingredient  
The present invention relates to carboxylic acid esters of the formula (I), ##STR1## wherein R1 is a hydrogen atom or a methyl group, and when R1 is a hydrogen atom, R2 is a group of the formula,...
4493844 Insecticidal 2,2'-bridged(1,1'-biphenyl)-3-ylmethyl carboxamides  
2,2'-Bridged[1,1'-biphenyl]-3-ylmethyl carboxamides and insecticidal compositions containing these carboxamides are useful for the control of a broad range of insects and acarids.
4492800 Process for the preparation of 1,1-dichloro-alkenes  
A process for the preparation of a 1,1-dichloro-alkene of the formula ##STR1## in which R1 is hydrogen, or an optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, aralkyl, aralkenyl or aryl...
4490552 Preparation of aryl esters by decomposing an aryl thallium carboxylate  
A novel process for the preparation of aryl esters of organic carboxylic acids in high isomer purity by decomposing a compound of the formula ##STR1## wherein Ar is an aryl radical, X is an acyloxy...
4489093 Insecticidal esters  
Novel esters in all possible isomeric forms of the formula ##STR1## wherein R is selected from the group consisting of (a) optionally unsaturated alkyl of 1 to 8 carbon atoms and optionally...
4487956 Menthyl 2,2-dimethylcyclopropanecarboxylate and resolution of the same  
An ester obtained from 2,2-dimethylcyclopropanecarboxylic acid and optically active menthol, represented by the formula, ##STR1## is effectively resolved into diastereomers, which upon hydrolysis...
4487955 Process for preparing cis or trans, optically active monoalkyl esters of cyclopropane-1,3-dicarboxylic acids  
A novel process for the preparation of esters of 2,2-dimethyl-cyclopropane-1,3-dicarboxylic acids in their optically active forms having a cis or trans configuration I comprising salifying the...
4482570 Pyrethroids  
Pyrethroid type insecticides described having the formula: ##STR1## wherein A=CF3 -CC-, ##STR2## (X=H, F, Cl, Br: Y=Cl, Br) ##STR3## (group ##STR4## is bound to the hererocyclic ring in position 2...
4479898 Oligopeptide prodrugs  
Prodrugs are described whose structures have a oligopeptide chain which is substituted by a nucleophilic chemotherapeutic residue at the α-position. The products have increased cell membrane ...
4474980 Process for the preparation of intermediates for pyrethroids  
There is described a process for the preparation of 2,2-dimethyl-cyclopropanecarboxylates carrying in position 3 a halosubstituted dienic substituent.Said compounds are intermediates for the...
4474977 Amino-alcohol derivatives  
The new amino-alcohol derivatives according to the invention have the formula: ##STR1## wherein: (a) R1 is hydrogen, an alkylthio C1 -C5 radical, a cycloalkylthio C5 -C6 radical, an alkoxy C1 -C5...
4473703 Method of epimerization of alkyl chrysanthemate  
A process for isomerization of cis-chrysanthemate esters by contacting a chrysanthemate ester containing a cis-chrysanthemate ester with a Lewis acid, to transform the cis-chrysanthemate ester into...
4472313 Cyclopropanation of olefins  
The invention provides a method of converting ethylenically unsaturated units of an olefinic substrate to corresponding cyclopropanyl units, comprising treating the olefinic substrate, in an ether...
4468521 Method of producing gamma-halogeno-delta unsaturated carboxylic acid esters  
Novel γ-lactone derivatives are provided. These lactone derivatives, when reacted with hydrogen halide in alcohol, yield γ-halogeno-δ-unsaturated carboxylic acid esters. This ring-opening pr...
4463014 Cyclopropane carboxylates  
Esters in their stereoisomeric form or mixtures thereof of the formula ##STR1## wherein R1 and R are different and individually selected from the group consisting of hydrogen, fluorine and bromine,...
4459305 Cyclopropanecarboxylic acid ester derivatives, a method of manufacturing them, and their uses  
The present invention relates to a cyclopropanecarboxylic acid ester derivative of the general formula I: ##STR1## in which R1 stands for a hydrogen atom, a methyl group, a halogen atom or a...
4459308 Pyrethroids  
There are described 2,2-dimethyl-cyclopropanecarboxylates having in position 3 of the cyclopropane ring, a polyhalogenated chain having from 3 to 6 carbon atoms.Said compounds are insecticide and...
4458090 Method of producing cyclopropanecarboxylic acids and esters  
Novel γ-lactone derivatives are provided. These lactone derivatives, when reacted with hydrogen halide in alcohol, yield γ-halogeno-δ-unsaturated carboxylic acid esters. This ring-opening pr...
4457940 Carboxylic acid ester derivatives, process for manufacturing said derivatives, insecticides and acaricides containing said derivatives, and method for killing insects and acarina by treating therewith  
Novel carboxylic acid ester derivatives, of the formula (I): ##STR1## process for manufacturing said derivatives, insecticides and acaricides containing said derivatives, and a method for killing...
4454343 Intermediates in a process for preparing dihalovinylcyclopropanecarboxylates  
Novel syntheses of dihalovinylcyclopropanecarboxylates, including potent insecticides, are described. The processes begin with the reaction between an alkenol and an orthoester to produce a...
4447637 Epimerization of trans chrysanthemates  
A novel process for the epimerization of alkyl trans chrysanthemates comprising reacting at a low temperature in an anhydrous organic solvent an alkyl trans chrysanthemate of the formula ##STR1##...
4442301 Process for stereoselectively synthesizing cyclopropane carboxylates  
A process for stereospecifically synthesizing lower alkyl esters of the cis-2,2-dimethyl-3-(β-fluoro-β-trifluoromethyl-vinyl)-cycl opropa necarboxylic acid.
4439446 Fluorine-containing oxyiminocyclopropanecarboxylates  
Compounds of the formula ##STR1## wherein R1 is a hydrogen atom; or a hydrocarbyl group; m and n each is 0 or 1 and m+n is 1 or 2; and D is a hydrogen atom; a cyano group; or an ethynyl group, are...
4431835 Hydrocarbonylation/carbonylation of alkyl carboxylates  
Alkyl carboxylates are hydrocarbonylated and/or carbonylated with carbon monoxide and hydrogen, in an aqueous medium, and in the presence of a catalytically effective amount of a catalyst system...
4431668 Cyclopropane carboxylic acid ester derivatives  
Cyclopropane carboxylic acid ester derivatives and optical and geometrical isomers thereof expressed by the general formula: ##STR1## wherein R1 represents hydrogen atom or methyl group, R2...
4431576 Perfumant cyclopropane-carboxylic acid derivatives  
A compound in all its possible isomeric forms and mixtures thereof of the formula ##STR1## wherein R is selected from the group consisting of (a) alkyl of 1 to 12 carbon atoms optionally...
4429149 4-Phenyl-2-indanyl esters of 1R,cis-3-(2-halo-3,3,3-trifluoropropenyl)-2,2-dimethylcyclopropanecarbox ylic acid  
Insecticidal 4-phenyl-2-indanyl 1R,cis-3-(2-halo-3,3,3-trifluoro-1-propenyl)-2,2-dimethylcyc lopropanecarbo xylates having a racemic or optically active indanyl moiety, methods of preparation and...
4425362 3-Aminopropoxyphenyl derivatives 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...
4425360 Pharmacologically active novel O-substituted pyruvic acid oximes  
The present invention provides pyruvic acid oximes of the general formula: ##STR1## wherein R is a hydrogen atom, a C3 -C8 cycloalkyl, C1 -C6 alkoxy, cinnamyloxy, phenylamino, phenyl-N-alkylamino...
4424166 Preparation of 1,1-dihalogeno-alkenes  
In the preparation of a 1,1-dihalogenoalkene of the formula ##STR1## in which R1 is a hydrogen atom or an optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, aralkyl, aralkenyl or aryl...
4421693 Aminosulfenyl chloride derivatives  
An aminosulfenyl chloride derivative represented by the formula (I): ##STR1## wherein R1 and R2 are defined in the specification, which is useful as an intermediate for the preparation of a...
4415748 Intermediates for insecticidal synthetic pyrethroids  
Intermediates and Process For Insecticidal Synthetic Pyrethroids Compounds of the formulas ##STR1## and their use in a process for preparing a pyrethroid insecticide of the formula ##STR2## wherein...
4414410 Process for preparing alkyl esters by homologation of the next lower alkyl ester  
Alkyl esters, such as ethyl acetate, are prepared by contacting the corresponding next lower carbon number alkyl ester, such as methyl acetate, with carbon monoxide and hydrogen in the presence of...
4410721 Process for the preparation of cyclopropene intermediates  
A novel cyclopropene-carboxylate of the formula ##STR1## wherein R is alkyl of 1 to 6 carbon atoms and their preparation and a process using the compounds of formula I to obtain cis compounds of...
4408066 Methyl cyclopropane-1,3-dicarboxylate  
Novel methyl esters of cis or trans configuration in their optically active form of the formual ##STR1## which are useful as intermediates for the preparation of pesticidal compounds and a process...
4405640 Substituted fluorobenzyl cyclopropane carboxylates useful as insecticides  
Insecticides of the formula ##STR1## wherein R1 and R2 are each selected from methyl, halomethyl, and halo; X is oxygen, sulphur, sulphonyl or a group NR4 where R4 represents hydrogen, lower alkyl...
4401601 Novel process for the preparation of tetra-substituted cyclopropane compounds  
A process for the preparation of tetrasubstituted cyclopropane compounds of the formula ##STR1## wherein Y is selected from the group consisting of --CN and --COOR, R is selected from the group...
Matches 251 - 300 out of 695 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >