Basf Aktiengesellschaft

Jacobus J DeKramer

Norbert Goetz

Albrecht Harreus

Bernd Wolf

Christoph Kuenast

Hans Theobald

Ernst Buschmann

Peter Hofmeister

Jochen Wild

Wolfgang Krieg

Wolfgang Mackenroth

Ulrich Klein

Ulrich Neumann

Guenter Renz

Christiane Mackenroth

Winfried Zombik

Roland Milli

A process for preparing a mixture of 8E,10E-dodecadienol (Ia), 8E,10Z-dodecadienol (Ib), 8Z,10E-dodecadienol (Ic) and 8Z,10Z-dodecadienol (Id),

Preparation, intermediates for the preparation and the use of a mixture

Benzyl esters of the formula I ##STR1## where R.sup.1 is methyl, ethyl, halogen, methoxy or ethoxy, R.sup.2 is alkyl, alkenyl, cycloalkyl, cycloalkenyl, bicycloalkyl, bicycloalkenyl, C.sub.1 -C.sub.5 -alkyl-substituted cycloalkyl, C.sub.1 -C.sub.5 -substituted cycloalkenyl, C.sub.1 -C.sub.5 -alkyl-substituted bicycloalkyl or C.sub.1 -C.sub.5 -alkyl-substituted bicycloalkenyl, R.sup.3 is hydrogen, cyano, C.sub.2 -C.sub.4 -alkynyl, C.sub.2 -C.sub.4 -alkenyl or C.sub.1 -C.sub.4 -alkyl, A is the carboxylate radical of an acid component typical for pyrethroids and X is hydrogen or halogen, with the proviso that R.sup.2 is not CH.sub.2 --CH.dbd.CH--B when B is hydrogen, alkyl or alkenyl and at the same time R.sup.1 is methyl or halogen, and furthermore with the proviso that R.sup.2 is not methyl when R.sup.1 is methyl, their manufacture, their use for combating pests, and precursors for manufacturing the benzyl esters.

Pyrethroids and their use for controlling pests

Growing community of inventors

Limburgerhof, Germany

Jacobus J DeKramer