Pyrethroids, process for their preparation and their use in combating pests

• Main Authors: ZOMBIK, WINFRIED, WILD, JOCHEN, KUENAST, CHRISTOPH, HOFMEISTER, PETER, DEKRAMER, JACOBUS JAN, GOETZ, NORBERT, WOLF, BERND, THEOBALD, HANS, HARREUS, ALBRAECHT
• Format: Patent
• Language: English; French; German
• Published: 27.12.1989
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; AGRICULTURE; ANIMAL HUSBANDRY; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; CHEMISTRY; FISHING; FORESTRY; HETEROCYCLIC COMPOUNDS; HUMAN NECESSITIES; HUNTING; METALLURGY; ORGANIC CHEMISTRY; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS; PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF; TRAPPING

Benzylester der Formel I in der R¹ Methyl, Ethyl, Halogen, Methoxy oder Ethoxy, R² Alkyl, Alkenyl, ggf. C1-C5-alkylsubstituiertes Cycloalkyl, Cycloalkenyl, Bicycloalkyl oder Bicycloalkenyl, R³ Wasserstoff, Cyano, C2-C4-Alkinyl, C2-C4-Alkenyl oder C1-C4-Alkyl, A den Carboxylat-Rest einer bei Pyrethroiden typischen Säurekomponente und X Wasserstoff oder Halogen bedeuten, mit der Maßgabe, daß R² nicht den Rest CH2-CH=CH-B bedeutet, wenn B für Wasserstoff, Alkyl oder Alkenyl steht und zugleich R¹ die Bedeutung Methyl oder Halogen hat, sowie ferner mit der Maßgabe, daß R² nicht Methyl bedeutet, wenn zugleich R¹ für Methyl steht, ihre Herstellung und ihre Verwendung zur Bekämpfung von Schädlingen sowie Vorprodukte für die Herstellung der Benzylester. Benzyl esters of the formula I (I) where R1 is methyl, ethyl, halogen, methoxy or ethoxy, R2 is alkyl, alkenyl, cycloalkyl, cycloalkenyl, bicycloalkyl, bicycloalkenyl, C1-C5-alkyl-substituted cycloalkyl, C1-C5-substituted cycloalkenyl, C1-C5-alkyl-substituted bicycloalkyl or C1-C5-alkyl-substituted bicycloalkenyl, R3 is hydrogen, cyano, C2-C4-alkynyl, C2-C4-alkenyl or C1-C4-alkyl, A is the carboxylate radical of an acid component typical for pyrethroids and X is hydrogen or halogen, with the proviso that R2 is not CH2-CH=CH-B when B is hydrogen, alkyl or alkenyl and at the same time R1 is methyl or halogen, and furthermore with the proviso that R2 is not methyl when R1 is methyl, their manufacture, their use for combating pests, and precursors for manufacturing the benzyl esters.