| abstract |
The present invention relates to novel 2,2-dimethyl-3- (2-halogen-vinyl) -cyclopropanecarboxylic acid esters of the formula (I) in which R, R 1 , R 2 , R 3 , Hal have the meaning given in the description. They are obtained if 2,2-dimethyl-3- (2-halogeno-vinyl) cyclopropanecarboxylic acids of the formula (II) or reactive derivatives thereof with alcohols of the formula (III), or with reactive derivatives thereof, if appropriate in the presence of acid acceptors, if appropriate in the presence of catalysts and if appropriate in the presence of diluents.n n n The new 2,2-dimethyl-3- (2-halogeno-vinyl) -cyclopropane-carboxylic acid esters are characterized by high pesticidal, in particular insecticidal and acaricidal activity, and low fish toxicity. |