Pyrethroids
AssigneeMontedison S.p.A.
InventorsRemo Galli, Franco Gozzo, Ottorino Palla, Angelo Longoni
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Abstract
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 substituted in the 3 position; the preparation of said novel esters; the use of said novel esters as insecticides and to insecticidal compositions containing said novel esters as the active ingredient. The present invention also includes providing intermediates for the synthesis of the new pyrethroids and the process for the preparation of said intermediates.
Claims19
Compounds of general formula:
- ##STR15## wherein:
- R=C.sub.1 -C.sub.4 alkyl
- X=halogen
- Y=OR" and ##STR16## wherein R.sup.1 =H or CN.
.alpha.-cyano-3-phenoxybenzyl ester of (.+-.)-cis-2,2-dimethyl-3-(.beta.-chloro-.beta.-methylthio-E,Z-vinyl)-cycl opropane carboxylic acid.
.alpha.-cyano-3-phenoxybenzyl ester of (.+-.)-trans-2,2-dimethyl-3-(.beta.-chloro-.beta.-methylthio-E,Z-vinyl)-cy clopropane carboxylic acid.
.alpha.-cyano-3-phenoxybenzyl ester of (.+-.)-trans-2,2-dimethyl-3-(.beta.-bromo-.beta.-methylthio-E,Z-vinyl)-cyc lopropane carboxylic acid.
.alpha.-cyano-3-phenoxybenzyl ester of (.+-.)-trans-2,2-dimethyl-3-(.beta.-chloro-.beta.-isobutyl-E,Z-vinyl)-cycl opropane carboxylic acid.
Compounds having the general formula:
- ##STR17## wherein:
- R=C.sub.1 -C.sub.4 alkyl
- X=halogen
- Y=OH, halogen, OR' and
- R'=C.sub.1 -C.sub.4 alkyl or benzyl.
Dependencies are inferred from the claim text.