Substituted pyrimidine ether compounds and use thereof
The invention relates to substituted pyrimidine ether compounds having general formula I: The groups are as defined as specification. The compounds of formula I show high insecticidal activities for imagoes, larvae and nits of harmful acari and insects in the agricultural, civil and zoic fields, especially show excellent insecticidal activities for harmful acari such as Tetranychus cinnabarinus . Good effects can be obtained at very low dose. The compounds also exhibit preferably fungicidal activity. Wherefore, the invention also comprises the uses of compounds of formula I as insecticides, acaricides and/or fungicides in agricultural and other fields.
1. A substituted pyrimidine ether compound having the following general formula I:
wherein:
R 1 is selected from H or C 1 -C 4 alkyl;
R 2 is selected from phenyl, benzyl or pyridyl; each phenyl, benzyl and pyridyl optionally substituted with 1-3 substituents independently selected from the group consisting of halogen, NO 2 , CN, C 1 -C 3 alkyl, C 1 -C 3 haloalkyl, C 1 -C 3 alkoxy or C 1 -C 3 haloalkoxy;
R 3 and R 4 may be the same or different, selected from H, Cl, Br, NO 2 , CN, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 3 -C 6 cycloalkyl, C 1 -C 3 alkoxy or C 1 -C 3 haloalkoxy;
X is O or S;
Q is
or a salt or a stereoisomer thereof.
2. The compound according to claim 1 , wherein
R 1 is H or methyl;
R 2 is phenyl or pyridyl; each phenyl and pyridyl optionally substituted with 1-3 substituents independently selected from the group consisting of halogen, CN, C 1 -C 3 alkyl, C 1 -C 3 haloalkyl, C 1 -C 3 alkoxy or C 1 -C 3 haloalkoxy;
R 3 is selected from H, Cl, Br, methyl, cyclopropyl or CF 3 ;
R 4 is selected from H, Cl, Br, CH 3 or CN;
X is O; and
wherein the salt is formed with hydrochlorides, phosphates, acetic acid, benzenesulfonic acid or oxalic acid.
3. The compound according to claim 2 , wherein
R 1 is H;
R 2 is phenyl or pyridyl; each phenyl and pyridyl optionally substituted with 1-3 substituents independently selected from the group consisting of Cl, F, CN, methyl, CF 3 , OCH 3 or OCF 3 ;
R 3 is selected from methyl, cyclopropyl or CF 3 ; and
R 4 is selected from H, Cl or CH 3 .
4. A composition of insecticides, acaricides and fungicides which comprises a compound according to claim 1 as an active ingredient, wherein the weight percentage of the active ingredient in the composition is from 0.5-90%.