Insecticidal esters of alpha-phenoxy alkanoic acids with substituted benzyl alcohols
AssigneeHoffmann-La Roche Inc.
InventorPavol Winternitz
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Abstract
Novel substituted .alpha.-aryloxycarboxylic acid esters and their preparation are described. The novel compounds are useful for the control of pests.
Claims13
A substituted .alpha.-aryloxycarboxylic acid ester of the formula ##STR13## wherein R.sub.1 and R.sub.2 are hydrogen, halogen, alkyl containing from 1 to 3 carbon atoms, lower alkoxy, lower alkylthio, cyano or nitro;
- or R.sub.2 and R.sub.1 together are methylenedioxy;
- R.sub.3 is hydrogen atom or cyano, lower alkenyl, lower alkynyl or lower alkyl;
- R.sub.4 is lower alkyl group and R.sub.5 is ##STR14## in which X is oxygen or sulphur or methylene and Z is hydrogen or fluorine.
An insecticidal composition comprising as an essential ingredient an insecticidally effective amount of compound of the formula ##STR17## wherein R.sub.1 and R.sub.2 are hydrogen, halogen, alkyl containing from 1 to 3 carbon atoms, lower alkoxy, lower alkylthio, cyano or nitro;
- or R.sub.1 and R.sub.2 together are methylenedioxy;
- R.sub.3 is hydrogen atom or cyano, lower alkenyl, lower alkynyl or lower alkyl;
- R.sub.4 is lower alkyl group and R.sub.5 is ##STR18## in which X is oxygen or sulphur or methylene and Z is hydrogen or fluorine and an inert carrier.
A method of combatting insects which comprises treating the material to be protected with a compound of the formula ##STR19## wherein R.sub.1 and R.sub.2 are hydrogen, halogen, alkyl containing from 1 to 3 carbon atoms, lower alkoxy, lower alkylthio, cyano or nitro;
- or R.sub.1 and R.sub.2 together are methylenedioxy;
- R.sub.3 is hydrogen atom or cyano, lower alkenyl, lower alkynyl or lower alkyl;
- R.sub.4 is lower alkyl group and R.sub.5 is ##STR20## in which X is oxygen or sulphur or methylene and Z is hydrogen or fluorine.
Dependencies are inferred from the claim text.