| 摘要 |
A preparation method wherein a carbene or carbenoid precursor of formula (II), wherein Ar1 is an optionally substituted aryl or heteroaryl radical is contacted with a compound of formula (III), wherein R is a hydrogen or halogen atom, an optionally substituted alkyl or CO2alkyl radical, OSi(alk1)3 or C=N, Ar2 is an optionally substituted aryl or heteroaryl radical, and X is a bromine or iodine atom, a C=N radical, COOalk2 or (a), where each of R1 and R2, which are the same or different, is a hydrogen atom or an alkyl radical or an optionally substituted aryl or heteroaryl radical, to give a compound of formula (b), which is then optionally conventionally chemically processed, when X is a bromine or iodine atom, or a CO2alk2 radical, to give the corresponding compound wherein X is a radical (c). The compounds of formula (I) have valuable pesticidal properties. |
