Abstract: 1-SUBSTITUTED-1,2,4-TRIAZOLES OF THE FORMULA ##STR1## in which X.sup.1 represents hydrogen or an alkyl radical,X.sup.2 represents hydrogen or an alkyl radical,R.sup.1 represents an alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl or optionally substituted aryl or aralkyl radical,R.sup.2 represents hydrogen or an alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl or optionally substituted aryl or aralkyl radical,R.sup.3 represents hydrogen or an alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl or optionally substituted aryl or aralkyl radical, andY represents a keto group or a functional keto derivative, which possess fungicidal properties.

Abstract: 1-Substituted-1,2,4-triazoles of the formula ##STR1## in which X.sup.1 represents hydrogen or an alkyl radical,X.sup.2 represents hydrogen or an alkyl radical,R.sup.1 represents an alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl or optionally substituted aryl or aralkyl radical,R.sup.2 represents hydrogen or an alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl or optionally substituted aryl or aralkyl radical,R.sup.3 represents hydrogen or an alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl or optionally substituted aryl or aralkyl radical, andY represents a keto group or a functional keto derivative,Which possess fungicidal properties.

Abstract: Quinonemonoxime-arylacylhydrazones of the formula ##EQU1## in which EACH X independently is halogen, nitro, C.sub.1 -C.sub.6 alkyl or C.sub.1 -C.sub.6 alkoxy,Ar is phenyl or naphthyl,Z is oxygen or sulfur,R is hydrogen, C.sub.1 -C.sub.6 alkyl, hydroxyl or C.sub.1 -C.sub.6 alkoxy,Each Y independently is C.sub.1 -C.sub.6 alkyl,n is 0, 1, 2, 3 or 4,m is 0 or 1, andq is 0, 1 or 2Which possess fungicidal properties.

Abstract: Plant fungicidal compositions are produced which comprise an amount of a compound of the formula: ##EQU1## wherein R is alkyl of 1 to 3 carbon atoms, sufficient to be effective for killing, combatting or controlling plant fungi, in combination with a solid or liquid diluent or carrier. Methods for killing, combatting or controlling fungal diseases in plants comprise applying to the fungi or to the plant to be protected an effective or toxic amount of the above compound.

Abstract: 4,5-BIS-(TRIFLUOROMETHYLIMINO)OXAZOLES OR DIAZOLES ARE PREPARED BY REACTING THE ENOL FORM OF AN AMIDE OR AN IMIDE OF A CARBOXYLIC ACID OR CARBONIC ACID, HAVING AT LEAST ONE HYDROGEN ATOM ON EACH OF AN OXYGEN AND NITROGEN OR TWO NITROGEN ATOMS VICINAL TO THE AMIDE CARBON ATOM, WITH PERFLUORO-2,5-DIAZAHEXA-2,4-DIENE IN THE PRESENCE OF A HYDROGEN FLUORIDE ACCEPTOR AT A TEMPERATURE OF ABOUT -50.degree. TO 120.degree.C, in accordance with the following formula ##EQU1## in which Z is oxygen, R-N= or ##EQU2## and X is oxygen or ##EQU3## and R, R', R" and R"' each is hydrogen or various optionally substituted hydrocarbon or heterocyclic radicals, several of them together possibly forming a heterocyclic ring.The invention also extends to compositions containing, and methods of using, the new compounds to combat fungi, insects and acarids.