N-acetonylbenzamides and their use as fungicides

A compound of the formula:

• ##STR10## wherein A is a chloro, bromo, fluoro, iodo, trifluoromethyl, trifluoromethoxy, fluorosulfonyl, methyl, ethyl, phenyl, methoxy, chloromethyl, (C.sub.1 -C.sub.2)alkoxycarbonyl, cyano or hydroxy group;
• A.sup.1 and B are each independently selected from the group consisting of hydrogen, chloro, bromo, fluoro and methyl group;
• X is cyano, thiocyano, isothiocyano, methylsulfonyloxy, thio(C.sub.1 -C.sub.2)alkyl, (C.sub.1 -C.sub.2)alkoxy, carbamoyloxy (--OC(O)NR.sup.3), thiocarbamoylthio (--SC(S)NR.sup.3), azide, (C.sub.1 -C.sub.4)alkylcarbonyloxy, phenylcarbonyloxy, phenoxy, phenylthio, trifluoromethylcarboxy, imidazolyl or triazolyl group;
• and when X is a phenylcarbonyloxy, a phenoxy or phenylthio substituent, the phenyl moiety may be independently substituted with one substituent selected from the group consisting of chloro, fluoro, bromo, iodo or methyl group;
• Y and Z are each independently a hydrogen, cyano, thiocyano, isothiocyano, methylsulfonyloxy, thio(C.sub.1 -C.sub.2)alkyl, (C.sub.1 -C.sub.2)alkoxy, carbamoyloxy (--OC(O)NR.sup.3), azide or (C.sub.1 -C.sub.4)alkylcarbonyloxy group and either Y or Z may be an imidazolyl or triazolyl group;
• R.sup.1 and R.sup.2 are each independently a (C.sub.1 -C.sub.6)alkyl group;
• and
• each R.sup.3 is independently a hydrogen or a (C.sub.1 -C.sub.4)alkyl group.