| 摘要 |
PI/5-19006/A Dioxolane derivatives Compounds of the formula (I) in which: n is 0, 1 or 2, and, if n is 2, the two radicals R3 are identical or different; either R1 is C1-C6alkyl, halo-C1-C3alkyl, C2-C4alkenyl, C2-C4alkynyl, C1-C3alkoxy or C3-C6cycloalkyl and R4 is hydrogen or C1-C3alkyl, or R1 and R4 together with the carbon atom to which R1 and R4 are bonded are a ring having 4, 5 or 6 ring members, and the ring skeleton, which may contain a carbon-carbon double bond, is composed either only of carbon atoms or of 1 oxygen atom and 3, 4 or 5 carbon atoms, and the ring is unsubstituted or mono- or disubstituted by identical or different C1-C3alkyl radicals; R2 is Cl-C3alkyl, halo-C1-C3alkyl, C1-C3alkoxy, halo-C1-C3alkoxy, fluorine, chlorine or bromine; R3 is C1-C3alkyl, halo-C1-C3alkyl, C1-C3alkoxy, halo-C1-C3alkoxy, fluorine, chlorine or bromine; R5 is hydrogen or C1-C3alkyl and X is methylene, O, S or C(=O), can be used as agrochemical active ingredients and can be prepared in a manner known per se.
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