Matches 351 - 400 out of 687 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >
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4304924 Cyclopropylmethyl benzoates  
The compound, cyclopropylmethyl 4-(2-cyclopropylcarbonyloxyethoxy)benzoate, novel intermediates therefor, synthesis thereof, and the use of said compound for the control of pests.
4304733 Novel allethrolone derivatives  
Novel alcohols of the formula ##STR1## wherein R 1 and R 2 are individually selected from the group consisting of carbamoyl and R 1 ' and R 2 ', R 1 ' and R 2 ' are individually selected from...
4299973 Alkyl 3,3-dimethyl-2-(2-hydroxy-2-methyl-propyl)-1-cyclopropene-1-carboxylates  
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...
4299972 Preparation of cyclopropanecarboxylic acid esters  
A process is disclosed for the preparation of an optically active or racemic cyclopropanecarboxylic acid of the formula (I) ##STR1## wherein R 1 and R 2 are the same or different and each is...
4299967 Process for producing optically active 2-(2,2-dihalogenovinyl)-cyclopropane-1-carboxylic acids substituted in the 3-position, and derivatives thereof, as well as novel 4-(2,2,2-trihalogenoethyl)-cyclobutane-1-sulfonic acid salts  
There is described a new process for the preparation of optically active 2-(2',2'-dihalogenovinyl)-cyclopropane-1-carboxylic acids substituted in the 3 position, and derivatives thereof. A racemate...
4299839 Novel pesticides and pesticidal compositions cyclopropanecarboxylates and pesticidal method  
Novel pesticidal compositions are comprised of a 2,2-dimethyl-3-(substituted ethyl)cyclopropanecarboxylic acid ester as the active ingredient, said cyclopropanecarboxylate having the structural...
4298756 1R, Cis 2,2-dihalovinyl-3,3-dimethylcyclopropylmethanol and ester derivatives  
Preparation of novel alkyl 2,2-dihalovinylcyclopropylacetates (intermediates in the preparation of insecticides) by reaction of a phosphine with a compound generating a dihalocarbene and reaction...
4297366 Combating arthropods with 2,2-dimethyl-3-(2-fluoroalkyl-2-oxy-vinyl)-cyclopropane-carboxylic acid esters  
2,2-Dimethyl-3-(2-fluoroalkyl-2-oxy-vinyl)-cyclopropane-carb oxylic acid esters of the formula ##STR1## in which R 1 is fluoroalkyl, R 2 is an optionally substituted alkyl, cycloalkyl, aralkyl...
4296241 Preparation of 3-(2,2-dichlorovinyl)-2,2-dimethyl-cyclopropane-1-carboxylic acid derivatives  
A process for the preparation of a 3-(2,2-dichlorovinyl)-2,2-dimethyl-cyclopropane-1-carboxylic acid or derivative of the formula ##STR1## in which R is hydrogen, alkali metal, ammonium, an...
4291061 1H-inden-1-one derivatives, processes for producing them, their use in microbicidal compositions, and for combating microorganisms  
2,3-Dichloro-7-hydroxy-1H-inden-1-one derivatives of the formula I ##STR1## wherein R 1 is hydrogen or one of the groups ##STR2## R 2 and R 3 independently of one another are each hydrogen,...
4291057 Biocidal esters of halo-4-alkenoic acids  
Novel esters of halo-4-alkenoic acid compounds having pesticidal activity and methods of their preparation.
4291056 Pesticidal esters  
3-(2,2-Dichlorovinyloxy)-benzylesters of the formula ##STR1## wherein each of R 1 and R 2 independently represent fluoro, chloro, bromo or methyl, R 3 represents hydrogen or methyl, R 4 ...
4289711 Ester synthesis  
A novel process is described for the preparation of compounds of formula ##STR1## wherein R 2 and R 3 are each chloro or bromo; X is carboxyl, nitrile, optionally substituted carbonamide,...
4288610 Purification of pyrethroid intermediate compounds by selective partial saponification  
Saponifiable impurities are removed from pyrethroid intermediates represented by the structure ##STR1## wherein R represents an alkyl radical having from 1 to about 30 carbon atoms and wherein X 1 ...
4285969 Pyrethroids  
The present invention concerns new pyrethroids having a high insecticidal activity. More particularly, this invention relates to novel esters of 2,2-dimethyl-cyclopropanecarboxylic acids...
4285882 Trihalocyclopropyl carbonates  
When the reaction of aldehydes with alkali metal trihaloacetates is carried out in the presence of a highly polar aprotic solvent (DMF, DMSO), novel organic alkali metal carbonates, which are...
4284821 Dichlorovinylcyclobutanones, processes for preparing them, and their use as intermediates for producing pesticidal compositions  
Dichlorovinylcyclobutanones of the formula ##STR1## wherein one of R 1 and R 2 is methyl and the other is hydrogen or methyl, or R 1 and R 2 together are alkylene having 2-4 C atoms, X is...
4284582 Process for the preparation of cyclopropane derivatives, intermediates in the synthesis of pyrethroid insecticides  
Compounds of formula: ##STR1## wherein both groups X are chlorine, bromine or trifluoromethyl, or one X is chlorine or bromine and the other is trifluoromethyl, and Y is --CN or --COOR in which R...
4282249 Oxyimino-substituted (1R, cis)-cyclopropanecarboxylate pesticides  
(1R,cis)-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...
4281171 Liquid carbon dioxide extraction of pyrethrins  
Pyrethrum flowers are extracted with liquid carbon dioxide in suitable equipment to yield a pale, transparent, concentrated extract of pyrethrins. The extract is useful as the active material in...
4281170 Process for the preparation of pyrethrins and analogues thereof and insecticidal compositions containing the same  
A method of making an insecticidal pyrethrin by oxidation in aprotic organic solvent. The compounds are of the formula: ##STR1## wherein R 11 is straight or branched chain lower alkyl or 1-alkenyl...
4279923 Combating pests with 3-(2,3-dichloro-3,3-difluoro-prop-1-en-1-yl)-2,2-dimethyl-cyclo-propanec arboxylic acid fluoro-benzyl esters  
3-(2,3-Dichloro-3,3-difluoro-prop-1-en-1-yl)-2,2-dimethyl-cy clo-propanecarb oxylic acid fluoro-benzyl esters of the formula ##STR1## in which R 1 represents hydrogen, cyano, alkyl with up to 4...
4277617 Process for the preparation of esters  
Novel esters in the form of their stereoisomers and mixtures of stereoisomers of the formula ##STR1## wherein X is selected from the group consisting of fluorine, chlorine and bromine R 1 is...
4276305 Cyclopropane carboxylic acid esters and cyclopropane(thio)-carboxylic acid esters  
Cyclopropane carboxylic acid esters and cyclopropane(thio)-carboxylic acid, esters, processes for their preparation, as well as pesticidal compositions containing these esters as the active...
4276225 Decarbalkoxylation of carboxylic acid esters  
A carboxylic acid ester activated in α-position by a keto, ester or nitrile group, i.e. of the formula ##STR1## where X is COOR 4 , COR 5 or CN, and the several R's can have various meanings but...
4271186 Stilbene compounds and insecticidal/acaricidal compositions  
The invention relates to certain new stilbene derivatives of the general formula ##STR1## in which R, R 1 and R 2 have the below mentioned meaning, to a process for their preparation and to their...
4266082 Preparation of 4-fluoro-3-phenoxy-toluene  
A process for the preparation of 4-fluoro-3-phenoxy-toluene of the formula ##STR1## comprising reacting 3-bromo-4-fluoro-toluene, of the formula ##STR2## with potassium phenolate, or with sodium...
4265819 Preparation of dihalogenovinylcyclopropanecarboxylic acids and esters  
A process for the preparation of a dihalogenovinylcyclopropanecarboxylic acid or an ester thereof, of the formula ##STR1## in which Hal each independently is fluorine, chlorine or bromine, R 1 ...
4264606 Insecticidal and acaricidal phenylcyclo-propane carboxylic acid derivatives and insecticidal and acaricidal compositions thereof  
Phenylcyclopropane carboxylic acid derivatives having the formula ##STR1## wherein X represents hydrogen or a halogen atom, C 1 -5 alkyl group C 1 -5 alkoxy group, trifluoromethyl, cyclopropyl,...
4259349 Halobenzyl ester pesticides  
Compounds of the formula ##STR1## wherein R 1 is H or halogen, R 2 is halogen, X is H, cyano, ethynyl or thioamido, n is an integer from 1-4 and each Y is H or halogen, are useful as pesticides.
4258202 Cyclopropanecarboxylic acids and esters  
Cyclopropanecarboxylic acids and esters are disclosed, having the formula: ##STR1## wherein A=CF 3 --C.tbd.C--; ##STR2## X=H, F, Cl, Br; Y=Cl, Br; R=H, alkyl C 1 -C 4 Compounds of formula I are...
4256907 Preparation of substituted vinylcyclopropane-carboxylic acid esters  
A process for the preparation of a substituted vinyl-cyclopropanecarboxylic acid ester of the formula ##STR1## in which R 1 and R 2 each independently is alkyl with 1-4 carbon atoms or halogen, ...
4255351 Sulfonic acid esters of 2,2,2-trichloroethylhydroxycyclobutanones  
Compounds of the formulae Ia, Ib, IIa and IIb ##STR1## are described, wherein R represents alkyl, haloalkyl, benzyl, naphthyl or substituted or unsubstituted phenyl and one of R 1 and R 2 ...
4252820 Arthropodicidal 2,2-dimethyl-3-(2-perfluoroalkyl-2-perhaloalkyl-vinyl)-cyclopropanecarbo xylic acid esters  
2,2-Dimethyl-3-(2'-perfluoroalkyl-2'-perhaloalkyl-vinyl)-cyc lopropane of the formula ##STR1## in which R is --COOR 2 , --COOH, --CO--Halogen, --CN or --CO--CH 3 , R 1 is fluorine or CF 3 , ...
4252738 1,2-Halohydrincarboxylic acid esters and a process for their preparation  
1,2-Halohydrincarboxylic acid esters of the formula ##STR1## wherein R 1 , R 2 , R 3 , and R 4 are identical or different and represent hydrogen, cyano and optionally substituted alkyl, alkenyl,...
4250326 Method of reducing the contents of haloethynyl-containing impurities in synthetic dihaloethenyl pyrethroid insecticides or intermediates by reaction with phosphites  
A method of reducing the content of a haloethynyl-containing impurity in a synthetic dihaloethenylcyclopropanecarboxylate by treatment with a phosphite under condition allowing the...
4250183 N-(Substituted amino)alkanoyl-aminoalkanoic acids and salts, their use and their compositions  
N-substituted ω-aminoalkanoyl-ω-aminoalkanoic acids and their pharmacologically-acceptable salts (with a base) are useful, e.g., in pharmaceutical-composition form for the treatment or...
4248888 Chemical compounds  
Insecticidal compounds of the formula: ##STR1## wherein R 11 is a straight or branched chain lower alkyl or 1-alkenyl or hydrogen; R and R 12 are the same or different and are hydrogen,...
4247711 Preparation of 2-formyl-3,3-dimethylcyclopropaneacetic acid  
2-Formyl-3,3-dimethylcyclopropylacetic acid is prepared by ozonolysis of 3-acetyl-6,6-dimethylbicyclo[3.1.0]-2-hexene followed by reductive cleavage of the ozonolysis product thus formed. The...
4242521 Cyclopropanecarboxylate pesticides  
Compounds of the formula ##STR1## wherein R 1 is a hydrocarbyl group, W is a chlorine or bromine atom or --OR in which R is H, a salt-forming cation, an alkyl group or the residue of a pyrethroid...
4242278 Process for the preparation of 2-(2',2',2'-trihalogenoethyl)-4-halogenocyclobutan-1-ones  
A process for the preparation of 2-(2',2',2',-trihalogenoethyl)-4-halogenocyclobutan-1-ones of the formula ##STR1## in which one of the radicals R 1 and R 2 is methyl and the other is hydrogen or...
4241081 Cyclopropanecarboxylate pesticides  
Compounds of the formula ##STR1## wherein R 1 is an acyl group or certain optionally halo-substituted hydrocarbyl groups, and X is --CH 2 CH(OCH 3 ) 2 , --CH 2 CHO, --CHCHOR 2 in which R 2 ...
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 --OR 1 ...
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 R 1 is --CHCH 2 or ##STR2## processes for producing them, and their...
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 ...
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...
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,...
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....
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...
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...
Matches 351 - 400 out of 687 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >