##STR1## in which: CYCLE surrounded by a semicircle represents, with the two carbon atoms to which the semicircle is linked, a carbon-containing, optionally heterocyclic, ring containing at least one ethylenic or aromatic bond between the two carbon atoms which carry the --C(Z).dbd.Y group and the phenyl group, Y is oxygen or sulphur, Z is NR.sub.1 R.sub.2, R.sub.1 and R.sub.2, each represents optionally substituted alkyl, alkoxy or cycloalkyl; alkenyl or alkynyl; or --NR.sub.1 R.sub.2 represents saturated or unsaturated heterocyclyl; R.sub.3, R.sub.4 and R.sub.5, each represents a hydrogen or halogen atom (at least one of R.sub.3, R.sub.4 and R.sub.5 being other than hydrogen or halogen); optionally substituted amino; optionally halogenated or hydroxylated alkyl, alkoxy, alkylalkoxy or alkylthio; or R.sub.3 and R.sub.4 (in the 3- and 4-positions) can together form a single divalent radical with 3 or 4 members containing 1 or 2 non-adjacent oxygen atoms; are useful as agricultural fungicides.
其中:CYCLE被一个半圆包围,表示与半圆相连的两个碳原子形成一个含有至少一个
乙烯基或芳香基的含碳环,该环可以是杂环,--C(Z).dbd.Y基团和苯基之间的两个碳原子上,Y为氧或
硫,Z为NR.sub.1 R.sub.2,R.sub.1和R.sub.2分别表示可选取代的烷基、烷氧基或环烷基;烯基或炔基;或--NR.sub.1 R.sub.2表示饱和或不饱和的杂环基;R.sub.3,R.sub.4和R.sub.5分别表示氢或卤素原子(至少有一个R.sub.3,R.sub.4和R.sub.5不是氢或卤素);可选取代的
氨基;可卤化或羟基化的烷基、烷氧基、烷基烷氧基或烷基
硫基;或R.sub.3和R.sub.4(在3-和4-位置)可以共同形成一个包含1或2个非相邻氧原子的3或4个成员的双价基团;这些化合物可用作农业杀菌剂。