申请人:Hoechst Schering Agrevo
公开号:US06197729B1
公开(公告)日:2001-03-06
Compounds of formula I
where
R1 is hydrogen, chlorine, fluorine or methyl,
R2 and R3, which may be the same or different from each other, are hydrogen, halogen, cyano, (C1-C4)-alkyl, vinyl, ethynyl, (C1-C4)-alkoxy, (C1-C4)-alkoxy-(C1-C4)-alkyl, fluorovinyl or fluoroethyl, or
R2 and R3 together with the linking carbon atoms form a benzo ring, and
R4 is (C2-C4)-alkyl, (C2-C4)-alkenyl or (C3-C4)-alkinyl, each of which is substituted by at least two fluorine atoms and optionally substituted by C1-4-alkoxy, cyanomethoxy, (C3-C4)-alkenyloxy or (C3-C4)-alkinyloxy, are useful as pesticides, especially against insects, acarids and fungi. The invention includes a novel process for fluorinating certain pyrimidines.
化合物的化学式为I,其中R1为氢、氯、氟或甲基,R2和R3可以相同也可以不同,为氢、卤素、氰基、(C1-C4)-烷基、乙烯基、乙炔基、(C1-C4)-烷氧基、(C1-C4)-烷氧基-(C1-C4)-烷基、氟代乙烯基或氟代乙基;或者R2和R3连同连接碳原子形成苯环,R4为(C2-C4)-烷基、(C2-C4)-烯基或(C3-C4)-炔基,每个基上至少有两个氟原子,可选地被C1-4-烷氧基、氰甲氧基、(C3-C4)-烯氧基或(C3-C4)-炔氧基取代,可用作杀虫剂,特别是对昆虫、螨和真菌。本发明还包括一种新颖的氟化某些嘧啶的方法。