A compound of the formula II ##STR1## in which R.sub.1 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 haloalkoxy or CF.sub.3 and A is C.sub.1 -C.sub.6 alkyl or C.sub.3 -C.sub.6 cycloalkyl, each of which is monosubstituted to trisubstituted by halogen, or is C.sub.1 -C.sub.4 alkyl or C.sub.3 -C.sub.6 cycloalkyl, each of which is substituted by C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 alkylsulfonyl, C.sub.1 -C.sub.4 alkylsulfinyl, C.sub.2 -C.sub.4 alkenyl, C.sub.5 -C.sub.6 cycloalkenyl, amino, C.sub.1 -C.sub.4 alkylamino, C.sub.1 -C.sub.4 dialkylamino or C.sub.2 -C.sub.4 alkynyl, it being possible for the C.sub.2 -C.sub.4 alkenyl radical and the C.sub.5 -C.sub.6 cycloalkenyl radical to be additionally monosubstituted to trisubstituted by halogen; or A is a 4- to 6-membered saturated heterocycle which contains a hetero atom selected from the group consisting of O, N and SO.sub.2 ; or A is C.sub.1 -C.sub.4 alkyl which is substituted by a 4- to 6-membered saturated heterocycle which contains a hetero atom selected from the group consisting of O, N and SO.sub.2.
化合物的
化学式为II ##STR1## 其中R.sub.1为氢、卤素、C.sub.1-C.sub.4烷基、C.sub.1-C.sub.4烷氧基、C.sub.1-C.sub.4烷
硫基、C.sub.1-C.sub.4卤代烷氧基或CF.sub.3,A为C.sub.1-C.sub.6烷基或C.sub.3-C.sub.6环烷基,每个基团均为单取代至三取代卤素,或者为C.sub.1-C.sub.4烷基或C.sub.3-C.sub.6环烷基,每个基团均为C.sub.1-C.sub.4烷氧基、C.sub.1-C.sub.4烷
硫基、C.sub.1-C.sub.4烷基磺酰基、C.sub.1-C.sub.4烷基亚磺酰基、C.sub.2-C.sub.4烯基、C.sub.5-C.sub.6环烯基、
氨基、C.sub.1-C.sub.4烷基
氨基、C.sub.1-C.sub.4二烷基
氨基或C.sub.2-C.sub.4炔基,C.sub.2-C.sub.4烯基基团和C.sub.5-C.sub.6环烯基基团还可以另外单取代至三取代卤素;或A为4-至6-成员饱和杂环,其中包含从O、N和SO.sub.2组成的杂原子;或A为C.sub.1-C.sub.4烷基,该基团被从O、N和SO.sub.2组成的杂原子构成的4-至6-成员饱和杂环取代。