摘要:
A process is described for preparing N-substituted 3-hydroxypyrazoles of the formula I ##STR1## where R.sup.1 is unsubstituted or substituted alkyl, alkenyl, alkynyl, cycloalkyl, aryl or heteroaryl andR.sup.2, R.sup.3 are hydrogen, cyano, halogen and unsubstituted or substituted alkyl, alkenyl, alkynyl, cycloalkyl, aryl or heteroaryl,by oxidizing a corresponding pyrazolidin-3-one.
摘要:
The invention relates to a method for producing N-acylated (hetero)aromatic hydroxylamine derivatives of formula (I), wherein the substituents, the ring atom and the index have the meanings give in the Description, by hydrogenating a (hetero)aromatic nitro-compound of general formula (II) in the presence of a hydrogenation catalyst.
摘要:
2-(3-Pyrazolyloxymethylene)nitrobenzene [sic] derivatives of the formula I ##STR1## where the substituents and indices have the meanings given in the description,are prepared by bromination of an o-nitrotoluene of the formula II ##STR2## and subsequent reaction with a 3-hydroxypyrazole of the formula IV ##STR3##
摘要:
Substituted 3-phenylpyrazoles of formula (I), where R.sup.1 is H, or a substituent; R.sup.2 is CN, CF.sub.3, halogen; R.sup.3 is H, alkyl, halogenalkyl; R.sup.4 is C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 halogenalkyl; R.sup.5 is H, NO.sub.2, halogen, --COOR, optionally substituted aminocarbonyl (where R is H, a substituent); and Z is --O--, --S--, --SO--, --SO.sub.2 --; and argriculturally usable salts thereof, for use as herbicides. ##STR1##
摘要:
Substituted 2-phenylpyridines I ##STR1## where substituents have the meaning described in the specification and their use as herbicides; for the desiccation/defoliation of plants.
摘要:
Substituted 2-phenylpyridines I ##STR1## wherein all variables are as defined in the specification are used as herbicides and for the desiccation/defoliation of plants.
摘要:
A substituted 2-phenylpyridine of the formula I ##STR1## where Ar is ##STR2## and the N-oxides of I and the agriculturally utilizable salts of I where these exist. Use: herbicides; desiccation/defoliation of plants.
摘要:
Substituted N-phenylglutarimides I ##STR1## X.sup.1, X.sup.2 =O, S; R.sup.1 =halogen, NO.sub.2, CN, CF.sub.3 ; R.sup.2 =H, halogen; R.sup.3, R.sup.4, R.sup.5 =H, halogen, CN, alkyl, cyctoalkyl, alkenyl, alkynyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, haloalkyl-thio, cyanoalkyl, alkoxycarbonyl, unsubstituted or substituted phenyl or benzyl,or 2 substituents of a C atom or 2 substituents of adjacent C atoms of the glutarimide ring are bonded to one another via a chain which may be substituted; A=CHR.sup.6 --CHR.sup.7 --CO--B or CR.sup.6 .dbd.CR.sup.8 --CO--B; R.sup.6 =H, C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.6 -haloalkyl; R.sup.7 =halogen, haloalkyl, OH, alkoxy or alkylcarbonyloxy; R.sup.8 =H, CN, alkyl, alkylcarbonyl, alkoxycarbonyl or B=H, alkyl, alkenyl, alkynyl, haloalkyl, cycloalkyl, alkoxy-alkyl, dialkoxyalkyl, alkylthioalkyl, alkoxy, alkylthio or amino, the last three radicals may be substituted, unsubstituted or functionalized; and plant-tolerable salts of I; their preparation and use as herbicides and desiccating/defoliating agents, and precursors for the preparation of the N-phenylglutarimides I.