Compounds of formula (I), wherein G represents together with the two carbon atoms of the pyrimidine ring to which it is attached, a 5- to 7-membered aliphatic carbocyclic or heterocyclic ring system which contain 0 to 2 heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur; and wherein said 5- to 7-membered aliphatic carbocyclic or heterocyclic ring system can be mono-, di- or trisubstituted by substituents selected from the group consisting of halogen, keto, C
1
-C
6
alkyl, C
1
-C
6
alkoxy, C
1
-C
6
alkyloximino and C
1
-C
6
alkylendioxy; and wherein the other substituents R
1
, R
2
, R
3
, R
4
, R
5
and R
6
are as defined in claim
1
, and their use as microbicides.
式(I)的化合物,其中G与其所连接的
嘧啶环的两个碳原子一起表示5-至7-成员的脂肪环烷基或杂环烷基环系统,该环系统中包含0至2个选自氮、氧和
硫的杂原子; 且所述的5-至7-成员的脂肪环烷基或杂环烷基环系统可以被取代基选自卤素、酮、C1-C6烷基、C1-C6烷氧基、C1-C6烷氧
肟基和C1-C6烷基二氧基取代,且其他取代基R1、R2、R3、R4、R5和R6如权利要求1所定义,并且它们的用途是作为微
生物杀灭剂。