Abstract: The invention provides compounds of formula I ##STR1## in which X, R.sup.1, R.sup.2 and R.sup.3 are as defined in the description. The compounds have valuable fungicidal activity.

Abstract: Compounds are disclosed having fungicidal activity and are of general formula I ##STR1## where at least three of A, C, D and E are --CX.dbd. and the other is --CX.dbd. or --N.dbd., where X is hydrogen, C.sub.1-8 -alkyl (optionally substituted by halogen), halo, nitro or phenoxy, in which the phenyl is optionally substituted by one or more groups selected from halo and trifluoromethyl;R.sup.1 is --SO.sub.2 R.sup.3 or ##STR2## and R.sup.2 is ##STR3## where R.sup.6 is hydrogen, C.sub.1-8 -alkyl (optionally substituted by one or more groups selected from halogen and hydroxy), C.sub.1-8 -alkanoyl, benzoyl, cyclohexylcarbonyl or aminocarbonyl (in which the amino is substituted by benzoyl or chlorobenzenesulphonyl);R.sup.3, R.sup.4, and R.sup.5 may be the same or different and have the meanings given to R.sup.6 or can be di-C.sub.1-8 -alkylamino; and Z is oxygen or sulphur; and when R.sup.1 is ##STR4## R.sup.2 can also be --CN.