Fungicidal and insecticidal substituted-heterocyclyl-acrylic esters

A ketocarboxylic acid derivative of the formula ##STR189## in which R.sup.1 represents straight-chain or branched alkyl having 1 to 6 carbon atoms, or represents benzyl,

• R.sup.3 and R.sup.4 in each case independently of one another represent hydrogen, cyano, fluorine, chlorine, bromine or straight-chain or branched alkyl having 1 to 6 carbon atoms,
• R.sup.5, R.sup.6 and R.sup.8 independently of one another represent hydrogen, fluorine, chlorine, bromine, methyl, ethyl, n- or i-propyl, n-, i-, s- or t-butyl, methoxy, ethoxy, n- or i-propoxy, methylenedioxy, methylthio, trifluoromethyl, trifluoromethoxy, difluoromethoxy, trifluoromethylthio, methoxycarbonyl, ethoxycarbonyl, methoximinomethyl, ethoximinomethyl, methoximinoethyl, ethoxyiminoethyl, cyclopentyl, cyclohexyl, divalent 1,3-propanediyl or 1,4-butanediyl, or represnts phenyl, benzyl, phenoxy, benzyloxy, phenylthio or benzylthio, each of which is optionally monosubstituted or trisubstituted in the phenyl moiety by identical or different substituents from the group consisting of fluorine, chlorine, bromine, methyl, ethyl, methoxy, ethoxy, methylthio, trifluoromethyl, difluoromethoxy, trifluoromethoxy and trifluoromethylthio, and
• R.sup.7 represents ##STR190## where R.sup.9 and R.sup.10 in each case independently of one another represent hydrogen, fluorine, chlorine, bromine, cyano, in each case straight-chain or branched alkyl, alkoxy, alkylthio or halogenoalkyl having 1 to 6 carbon atoms and where appropriate 1 to 13 identical or different halogen atoms, or represent straight-chain or branched alkoxycarbonyl having 1 to 6 carbon atoms in the alkoxy moiety, or dialkylaminocarbonyl which has 1 to 4 carbon atoms in each alkyl moiety, each of the individual alkyl moieties being straight-chair on branched and substituted by identical or different substituents, or represents phenyl, benzyl, phenyloxy, phenylthio, benzyloxy or benzylthio, each of which is unsubstituted or monosubstituted to trisubstituted by identical or different substituents, or represent 5- or 6-membered heteroaryl which contains 1 to 3 hetero atoms from the group consisting of nitrogen, oxygen and sulphur and which is unsubstituted or monosubstituted or distributed by identical or different substituents, the substituents in each case being halogen, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkyloxy, halogenoalylthio, each of which has 1 to 4 carbon atoms and where appropriate 1 to 9 identical or different halogen atoms, dialkylamino or dialkylaminocarbonyl, each of which has 1 to 4 carbon atoms in each of the straight-chain or branched alkyl moieties, 1,3-propanediyl, 1,4-butanediyl, or phenyl or benzyl which are unsubstituted or monosubstituted to disubstituted by identical or different substituents selected from the group consisting of halogen and phenyloxy.