Importance

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Abstract

Compounds of the formula I ##STR1## in which Y is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, OH, CN, NO.sub.2, Si(CH.sub.3).sub.3, CF.sub.3 or halogen, Z is a group a) ##STR2## R.sub.1 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenyl, C.sub.2 -C.sub.4 -alkynyl, C.sub.3 -C.sub.6 cycloalkyl, phenyl which is unsubstituted or at most trisubstituted by halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, or benzyl which is unsubstituted or at most trisubstituted in the aromatic ring in the same manner; or is cyclopropylmethyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.2 -C.sub.5 alkoxyalkyl, cyanomethyl, CO--R.sub.6, OH, NH.sub.2, C.sub.1 -C.sub.4 alkylamine or C.sub.1 -C.sub.4 alkoxycarbonyl-C.sub.1 -C.sub.2 alkyl; X is oxygen, sulfur or NR.sub.5 ; R.sub.2 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenyl, C.sub.2 -C.sub.4 alkynyl, C.sub.3 -C.sub.6 cycloalkyl, C(O)R.sub.6, OH or C.sub.1 -C.sub.4 alkoxy, NH.sub.2 or C.sub.1 -C.sub.4 alkylamine; R.sub.5 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenyl or C.sub.2 -C.sub.4 alkynyl; R.sub.6 is hydrogen, C.sub.1 14 C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.3 -C.sub.6 cycloalkyl, C.sub.1 -C.sub.4 alkoxycarbonyl or phenyl which is unsubstituted or at most trisubstituted; and in which R.sub.3 and R.sub.4 independently of one another are hydrogen, cyano, C.sub.1 -C.sub.4 alkyl, halo-C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenyl, C.sub.2 -C.sub.4 alkynyl, C.sub.3 -C.sub.6 cycloalkyl, cyclopropylmethyl, C.sub.1 -C.sub.4 alkoxy, C.sub.2 -C.sub.5 alkoxyalkyl, C.sub.2 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.4 alkylthio, C.sub.2 -C.sub.5 -alkylthioalkyl; a ring having not more than 15 ring carbon atoms which can be polymembered and is unsubstituted or at most trisubstituted and has 0-3 hetero atoms N, O or S, it being possible for this ring to be bonded via an aliphatic bridge having not more than 4 carbon atoms and/or via either CO, oxygen or sulfur; or in which R.sub.3 and R.sub.4 together with the shared carbon atom are a ring or a polymembered ring system having not more than 15 ring carbon atoms which is unsubstituted or at most trisubstituted and has 0-3 hetero atoms N, O or S; are suitable for controlling and preventing attack by microorganisms of plants. They can be used in the form of commercially available formulated compositions.

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First Claim