Compounds of formula Iwherein R1 is C1-C4alkyl or C1-C4haloalkyl R2 is C1-C4alkyl R3 is hydrogen or halogen R4 is hydrogen, C1-C4alkyl or C1-C4haloalkyl R5 is hydrogen, halogen, C1-C4alkyl or C1-C4haloalkyl G1 is a cyclohexenyl group which is mono- or polysubstituted by substituents selected from the group consisting of C1-C6alkyl, C1-C6alkoxy, C3-C6cycloalkyl and phenyl said cyclohexenyl group can form together with a C1-C4alkylene group a bicyclic system which can be mono- or polysubstituted by by substituents selected from the group consisting of C1-C6alkyl, C1-C6alkoxy, C3-C6cycloalkyl and phenyl are suitable for use as microbiocides.一種式I化合物其中R1為C1-C4烷基或C1-C4鹵烷基;R2為C1-C4烷基;R3為氫或鹵素;R4為氫、C1-C4烷基或C1-C4鹵烷基;R5為氫、鹵素、C1-C4烷基或C1-C4鹵烷基;G1為環己烯基,其係經選自由以下組成之群的取代基單取代或多取代:C1-C6烷基、C1-C6烷氧基、C3-C6環烷基及苯基;該環己烯基可與C1-C4伸烷基一起形成雙環系統,該雙環系統可經選自由以下組成之群的取代基單取代或多取代:C1-C6烷基、C1-C6烷氧基、C3-C6環烷基及苯基;該等化合物適用作殺微生物劑。
