Abstract: 2-(1H-pyrazol-1-yl)-4-(3H)-quinazolinones of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and denote hydrogen, halogen, alkyl, alkoxy, hydroxyl or amino andR.sup.5 represents hydrogen or a cation,are active compounds in microbicidal agents.

Abstract: Azolylmethyl-thienyl-carbinols of the formula ##STR1## in which R.sup.1 is optionally substituted phenyl, andR.sup.2 is optionally substituted thienyl,or addition products thereof with acids or metal salts, which possess fungicidal activity.

Abstract: A method of combating fungi which comprises to such fungi or to a fungus habitat a fungicidally effective amount of a substituted hydroxyalkyl-azole of the formula ##STR1## in which R.sup.1 is optionally substituted phenyl, --O-phenyl, --S-phenyl, --SO-phenyl, --SO.sub.2 -phenyl, --CH.sub.2 --phenyl, --CH.sub.2 --O-phenyl, --CH.sub.2 --S-phenyl, --CH.sub.2 --SO-phenyl or --CH.sub.2 --SO.sub.2 -phenyl,R.sup.2 is alkyl,R.sup.3 is alkyl,X is a nitrogen atom or the CH group,Y is halogen, alkyl, cycloalkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogenoalkylthio, optionally substituted phenyl, optionally substituted phenylalkyl or optionally substituted phenylalkoxy, andm is 0, 1, 2 or 3,or an addition product thereof with an acid or metal salt.

Abstract: The new hydantoins of the formula ##STR1## in which R.sup.1 denotes an optionally substituted alkyl, alkenyl, cycloalkyl or aralkyl radical andR.sup.2 and R.sup.3 are identical or different and denote hydrogen, alkyl or alkenyl or are linked to form a cycloalkyl radical,can be prepared by reacting a corresponding hydantoin with dichlorofluoromethanesulphenyl chloride. The new compounds can be used as active compounds in microbicidal agents.

Abstract: Novel Substituted benzoxazine derivatives of the formula ##STR1## in which X is oxygen or suophur, andR.sup.1 and R.sup.2 each independently is hydrogen, alkyl, alkoxy, akylthio, halogenoalkyl, alkanoyl, aroyl, halogen, cyano, nitro, nitroso, amino or the suophonic acid grouping, with the restriction that either of R.sup.1 and R.sup.2 does not represent hydrogen if the other represents hydrogen, the 6-methyl group, the 6-ethyl group, the 6-butyl group or the 6-acetyl group and X is oxygen,which possess fungicidal activity. A few related compounds, though known, also possess such activity.

Abstract: N-Sulphenylated hydantoins of the formula ##STR1## in which R.sup.1 is trihalogenomethoxy or trihalogenomethylmercapto,R.sup.2 is hydrogen, nitro or halogen, andR.sup.3 and R.sup.4 each independently is hydrogen or alkyl, or, together with the ring carbon atom at which they are located, form a five-membered or six-membered cycloalkyl radical,which possess fungicidal activity.