New 2,2-dimethylcyclopropanecarboxylic acid derivatives carrying a 1-buten-3-ynyl chain in the 3 position, their process of preparation and their application as pesticides

摘要

The subject of the invention is the compounds of formula (I): IMAGE in which: - X represents a hydrogen atom, a halogen atom or an optionally substituted alkyl radical, - Y represents a hydrogen atom, a halogen atom, an optionally substituted alkyl radical, an optionally substituted aralkyl or aryl radical, a (CH2)mSi(alk1)3 radical or a (CH2)nOalk2 or (CH2)pSalk3 radical, m, n and p representing an integer which can vary from 0 to 6 and alk1, alk2 and alk3 representing an alkyl radical, and - R represents an alkyl radical comprising from 1 to 18 carbon atoms or the residue of an alcohol used in the pyrethrinoid (pyrethroid) series. The compounds of formula (I) possess pesticidal properties.