Matches 401 - 450 out of 695 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >


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4238504 Cyclopropanecarboxylic acid-phenoxy-α-vinyl-benzyl esters, processes for producing them, and their use in combating pests  
Cyclopropanecarboxylic acid-phenoxy-α-vinyl-benzyl esters of the formula ##STR1## in which Y is chlorine or bromine, and R1 is --CHCH2 or ##STR2## processes for producing them, and their use in co...
4238505 Insecticidal biphenylmethyl perhaloalkylvinylcyclopropanecarboxylates  
Perhaloalkylvinylcyclopropanecarboxylates having the general formula: ##STR1## wherein one of Y and Z is a perhaloalkyl group and the other is hydrogen, halogen, or lower alkyl; and R is --OR1...
4237123 Oxyimino-substituted cyclopropanecarboxylate pesticides  
New cyclopropane compounds have the formula ##STR1## wherein X is chlorine, bromine or OR in which R is hydrogen, a salt-forming cation, an alkyl group or residues of certain other alcohols; and W...
4237163 Hydrazono-substituted cyclopropanecarboxylate pesticides  
Cyclopropane compounds having the formula ##STR1## wherein X is chlorine, bromine or OR in which R is hydrogen, a salt-forming cation, an alkyl group or residues of certain other alcohols and R1...
4236018 Process for preparing cyclopropane carboxylic acids  
1-Cyano-3-[2',2'-(dihalogeno and/or trifluoromethyl)vinyl]-2,2-dimethylcyclopropanes are converted into the corresponding 1-amides and 1-carboxylic acids by reaction with sulphuric acid and water,...
4235785 4-Acetyl-2-alkoxy-7,7-dimethyl-3-oxabicyclo[4.1.0]heptane  
4-Acetyl-2-alkoxy-7,7-dimethyl-3-oxabicyclo[4.1.0]heptanes are new chemical compounds useful as intermediates for certain pyrethroid esters. They are prepared by ozonolysis of 4-hydroxy-2-carene...
4235927 Insecticidal benzylfurylmethyl perhaloalkylvinylcyclopropanecarboxylates  
Perhaloalkylvinylcyclopropanecarboxylates having the general formula ##STR1## are disclosed wherein one of Y and Z is a perhaloalkyl group and the other is hydrogen, halogen, or lower alkyl....
4233129 Process of preparation of alkyl esters of dl cis chrysanthemic acid  
A process for the production of an alkyl ester of dl cis chrysanthemic acid having the formula ##STR1## wherein R is an alkyl having from 1 to 6 carbon atoms, involving preparing a lithiated...
4233232 Manufacture of esters  
m-Phenoxybenzyl esters of carboxylic acids are prepared from the methyl or ethyl esters of the acids by reaction of the latter with m-phenoxybenzyl alcohol in the presence of a tetra-aryl titanate...
4232169 Process for preparing alpha-oxo-esters  
An operationally simple and economical process for preparing alpha-oxoesters is provided by reacting an acetylenic compound of formula R--C.tbd.C--OR'with an oxidizing mixture composed of osmium...
4231953 Fluoro substituted aryl esters and thiolesters of amino acids  
Fluoro substituted aryl esters and thiolesters of amino acids, intermediates therefor, synthesis thereof and the use of said esters and thiolesters and compositions for the control of pests.
4231932 Phthalimidomethyl cyclopropane carboxylic acid esters  
Novel cyclopropane carboxylic acid esters of the formula ##STR1## wherein X1 is selected from the group consisting of hydrogen, fluorine, chlorine and bromine, X2 is selected from the group...
4230891 2-(2,2-Dihalovinyl)-3,3-dimethylcyclopropanecarbaldehyde dimethyl acetal  
New 2-(2,2-dihalovinyl)-3,3-dimethylcyclopropane derivatives of the formula ##STR1## wherein each Hal is a halogen atom and R is dimethoxyethyl, 2-acetyl-3-oxobutyl, 2-methoxycarbonylpropyl or...
4228299 Chemical process for preparing alkyl esters or the amide of 3-(β,.beta .  
Process for the preparation of 1-lower alkoxycarbonyl-3-(β,β-dichlorovinyl)-2,2-dimethylcycloprop anes from the corresponding 1-cyano-1-carboxylic acid ester by hydrolysis, decarboxylation of the f...
4225616 Tetrahaloethylcyclopropane-carboxylic acid esters  
Cyclopropanecarboxylic acid esters of the formula ##STR1## in which X1 is fluorine, chlorine or bromine, R1 and R2 are each hydrogen, fluorine, chlorine, bromine or methyl, R3 and R4 are each...
4225533 Fluorobenzyl esters of cyclopropanecarboxylic acids  
Novel esters of ether and thioether substituted cyclopropanecarboxylic acids, synthesis thereof, and intermediates therefor, such esters being useful as pesticides.
4223155 3-(Hydrocarbylthiomethyl)-2,2-dimethyl-cyclopropanecarboxylate pesticides and their preparation  
Compounds of the formula ##STR1## wherein R1 is an optionally halo-substituted hydrocarbyl group, and X is --C(O)Cl, --C(O)Br or C(O)OR in which R is H, a salt-forming cation, an alkyl group or the...
4219564 Vinylcyclopropanecarboxylic acid-3-phenoxy-α-vinylbenzyl esters, processes for producing them, and their use in combating pests  
Vinylcyclopropanecarboxylic acid-3-phenoxy-α-vinylbenzyl esters of the formula ##STR1## in which X1 is fluorine, chlorine or bromine, X2 is hydrogen or bromine, and Y is hydrogen or ...
4219562 3-(Hydrocarbylthiomethyl)-2,2-dimethylcyclopropanecarboxylate pesticides  
Compounds of the formula ##STR1## wherein R1 is an optionally halo-substituted hydroxcarbyl group, and X is --C(O)Cl, --C(O)Br or C(O)OR in which R is H, a salt-forming cation, an alkyl group or...
4219504 Preparation of 2-(2-acetyl-3-oxobutyl)-3,3-dimethylcyclopropanecarbaldehyde  
A process for the preparation of an aldehyde or a ketone by ozonolysis of an ethylenically unsaturated compound in the presence of an anti-oxidant followed by reductive cleavage of the ozonolysis...
4218402 Preparation of 2,2-dimethyl-3-((oxyimino)methyl)cyclopropanecarboxylic acids  
2,2-Dimethyl-3-((oxyimino)methyl)cyclopropanecarboxylic acids are prepared by treating the mixed anhydride of acetic and caronaldehydic acids with an acid addition salt of a hydroxylamine or of a...
4218469 Combating arthropods with 3-phenoxy-fluoro-benzyl carboxylic acid esters  
3-Phenoxy-fluoro-benzyl carboxylic acid esters of the formula ##STR1## in which R2 is hydrogen, cyano or ethynyl, R3 is ##STR2## R4 and R5 represent chlorine, bromine or methyl, and R6 is phenyl or...
4218348 Esters of 1,5-dimethylbicyclo-[3,2,1]octan-8-ol  
Esters of 1,5-dimethylbicyclo[3,2,1]octan-8-ol of the general formula: ##STR1## wherein R represents hydrogen or an aliphatic or an aromatic hydrocarbon group optionally substituted with an amino...
4216162 Novel derivatives of cyclopropanecarboxylic acid useful as intermediates for the preparation of insecticides  
Novel 2-(2,2-dihalogenovinyl)-3,3-dimethylcyclopropanecarboxylic acid derivatives of the formula ##STR1## e.g. amides, thioamides, oxazolines, amidoximes and hydroxamic acids, are produced by...
4214004 Insecticidal cyclopropanecarboxylates from substituted [1,1'-biphenyl]-3-ylmethyl compounds  
Substituted [1,1'-biphenyl]-3-ylmethyl 3-(2,2-dihaloethenyl)-2,2-dimethylcyclopropanecarboxylates, as well as processes, uses, and intermediates thereto, are disclosed. The substituted...
4211792 Oxyimino-substituted (1R,trans)-cyclopropanecarboxylate pesticides  
(1R,trans)-cyclopropane compounds, substantially free of other stereoisomers, and having the formula ##STR1## wherein X is chlorine, bromine or OR in which R is hydrogen, a salt-forming cation, an...
4211727 Reduction of carboxylic acid halides to aldehydes  
Carboxylic acid halides are reduced to the corresponding aldehydes using zinc borohydride or cadmium borohydride as the reducing agent.
4209642 Cyclopropylmethanol pesticide  
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, -...
4206231 Hypoglycaemically active 2-alkyl- or -alkenyl-hydrazono propionic acid derivatives  
A 2-hydrazonopropionic acid derivative of the formula ##STR1## wherein R is an aliphatic hydrocarbon radical, and X is a valency bond or a divalent aliphatic hydrocarbon radical containing up to 4...
4201789 Cyclopropanecarboxylic acid naphthylmethyl ester  
Cyclopropanecarboxylic acid naphthylmethyl ester, processes for its preparation, as well as pesticidal compositions which contain the naphthylmethyl ester as the active ingredient and methods of...
4199596 Combating arthropods with fluorine-substituted phenoxybenzylcarbonyl derivatives  
Fluorine substituted phenoxybenzylcarbonyl derivatives of the formula ##STR1## in which R1 represents hydrogen, cyano or ethynyl and R2 represents the radical ##STR2## wherein R3 and R4, which are...
4198347 2(2,2-Dichlorovinyl)-3,3-dimethyl-cyclopropane carboxylates  
Preparation of ethyl 2(2,2-dichlorovinyl)-3,3-dimethyl-1-ethoxycarbonylcyclopropa ne carboxylate and ethyl 1-cyano-2(2,2-dichlorovinyl)-3,3-dimethyl-cyclopropanecarbox ylate as intermediates.
4198527 Ether substituted cyclopropanecarboxylic acids and esters  
Novel esters of ether and thioether substituted cyclopropanecarboxylic acids, synthesis thereof, and intermediates therefor, such esters being useful as pesticides.
4197408 Asymmetric synthesis of alkyl chrysanthemate  
A process for the production of an optically active chrysanthemate which comprises reacting 2,5-dimethyl-2,4-hexadiene with a diazoacetate of the formula: N2 CHCOORwherein R is selected from the...
4196304 Separation of stereoisomeric cyclic carboxylic acids  
A process for the separation of the stereoisomers of a stereoisomer mixture of a cyclic carboxylic acid of the formula ##STR1## in which R1 and R2 each independently is hydrogen, halogen, C1 -C6...
4195033 1-Acetyl or 1-cyano-2(2,2-dichlorovinyl)-3,3-dimethyl cyclopropane  
1-acetyl or 1-cyano-2(2,2-dichlorovinyl)-3,3-dimethylcyclopropane. These compounds are useful intermediates.
4188492 Process for converting 2,2-dichlorovinylcyclopropanes to dibromovinyl analogs  
Treatment of 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acids and esters with aluminum bromide, the reaction product of aluminum and a bromoalkane, or HBr and the product of the...
4183950 Combating arthropods with 2,2-dimethyl-3-vinyl-cyclopropane carboxylic acid esters of halogenated benzyl alcohols  
2,2-Dimethyl-3-vinyl-cyclopropane carboxylic acid esters of halogenated benzyl alcohols of the formula ##STR1## in which each R independently represents F, Cl, Br or CH3 and m and n each represent...
4179575 Polyhalogenated carboxylic acids  
Novel polyhalogenated cyclopropane carboxylic acid compounds of the formula ##STR1## wherein X1 is selected from the group consisting of hydrogen, fluorine, chlorine and bromine, X2 is selected...
4177198 Process for preparing alkaline earth metal mercaptides  
A process for preparing alkaline earth metal mercaptides, useful as synergists for organotin stabilizers in halogen containing resins such as polyvinyl chloride, the process comprising preparing an...
4175134 Phenoxybenzyl ester pesticides  
Certain esters of alpha-substituted-phenoxybenzyl alcohols of the formula ##STR1## wherein A represents certain optionally substituted aralkyl, alkyl or cyclopropyl groups at least one of X and Y...
4166064 Process for preparing high cis 3-(2,2,2-trichloroethyl)-2,2-dimethylcyclopropane-1-carboxylates  
A process is described whereby esters of 3-(2,2,2-trichloroethyl)-2,2-dimethylcyclopropane-1-carboxyl ic acid are prepared predominantly in their cis isomer form. The process comprises treating a...
4162328 Cyclopropane carboxylic acid esters  
Cyclopropane carboxylic acid esters useful as pesticides and methods for their manufacture are disclosed.
4162366 α-TRIFLUOROMETHYL-3-PHENOXYBENZYL ALCOHOL  
New insecticides, organic esters wherein the alcohol moiety is α-trifluoromethyl-3-phenoxybenzyl alcohol and the acid moiety is a pyrethroid carboxylic acid, are described and shown to control a ...
4161596 Process for preparing carbamoyloxy acrylates  
Unsaturated carbamoyloxy carboxylates having low color are produced by reacting hydroxyalkyl carbamates such as N-methyl 2-hydroxyethyl carbamate with acrylic or methacrylic acid in contact with a...
4154952 Process for the production of substituted cyclopropane derivatives  
Substituted cyclopropane derivatives are prepared in one step by interreacting an aldehyde, an active methylene compound, a sulfoxonium or sulfonium bromide or iodide, and a strong base in a...
4153064 Cigarette filters  
Cigarette filters are prepared by blooming a tow of cellulose acetate fibers, adding or spraying onto the bloomed tow from 1 to 20% by weight (based on the weight of the cellulose acetate fibers)...
4152455 Insecticidal α-trifluoromethyl-3-phenoxybenzyl carboxylates  
New insecticides, organic esters wherein the alcohol moiety is α-trifluoromethyl-3-phenoxybenzyl alcohol and the acid moiety is a pyrethroid carboxylic acid, are described and shown to control a ...
4138584 Production of chrysanthemic acid esters and homologues thereof  
A three-step process for the production of chrysanthemic acid esters and their homologues of the formula: ##STR1## in which R1 and R2 are hydrogen or C1 -C6 alkyl, R3 and R4 are C1 -C6 alkyl or...
4133961 Process for the production of unsaturated carboxylic acids containing additional functional groups  
A process for the preparation of an unsaturated dicarboxylic acid containing additional functional groups wherein a substituted cyclobutane is contacted with an anhydride of acetic, propionic or...
Matches 401 - 450 out of 695 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >