Abstract:
The present invention relates to a novel process for preparing 3-(1-hydroxyphenyl-1-alkoximinomethyl)dioxazines which are known as intermediates for preparing compounds having fungicidal properties (WO 95-04728). Furthermore, the invention relates to novel 3-(1-hydroxyphenyl-1-alkoximinomethyl)dioxazines, to novel intermediates for their preparation and to a plurality of processes for preparing the novel intermediates.
Abstract:
Preparation of an N-alkyl-arylamine of the formula ##STR1## in which Ar represents an aryl radical which is optionally monosubstituted or polysubstituted by at least one of halogen and in each case optionally substituted alkyl, alkoxy or alkoxycarbonyl, R.sup.1 represents hydrogen or alkyl and R.sup.2 represents in each case optionally substituted alkyl or aryl, or, together with R.sup.1, represents alkanediyl, by reacting a nitroarene of the formula Ar--NO.sub.2 (II) with a carbonyl compound of the formula R.sup.1 --CO--R.sup.2 (III) in the presence of hydrogen and in the presence of a catalyst at a temperature between 0.degree. C. and 200.degree. C.
Abstract:
The present invention relates to a novel process for preparing N-methyl-N'-nitroguanidine by reacting nitroguanidine with aqueous methylamine solution at 0.degree. to 40.degree. C.
Abstract:
Herbicidal compositions containing as active ingredients (1) 3-benzthiazol-2-yl)-1,3-dimethylurea, which has the formula ##STR1## and (2) 2,6-dichloro-4-trifluoromethyl-4-'-cyano-diphenyl ether, which has the formula ##STR2## alone or in admixture with a solid or liquid or liquefied gaseous diluent or carrier, exhibit outstanding synergistic herbicidal activity and selectivity.
Abstract:
Halogenated 4-trifluoromethyl-diphenyl-ether compounds of the formula ##SPC1##In whichR.sup.1 is alkylthio of from 1 to 4 carbon atoms, alkylsulfinyl or alkylsulfonyl of from 1 to 4 carbon atoms, or aminothiocarbonyl;R.sup.2 is hydrogen or methyl;X.sup.1 is halogen; andX.sup.2 is hydrogen or halogen;Are outstandingly effective as herbicides, particularly as selective herbicides.
Abstract:
Halogenated 4-trifluoromethyl-4'-cyano-diphenyl-ether compounds of the formula ##SPC1##In whichR is hydrogen, halogen, alkyl of from 1 to 4 carbon atoms, alkoxy of from 1 to 4 carbon atoms or alkylthio of from 1 to 4 carbon atoms,Are outstandingly effective as herbicides, particularly as selective herbicides.
Abstract:
The present invention relates to novel imidamide derivatives of the formula (I) in which R, R1, R2 and R3 are each as defined in the description, to a process for their preparation and to their use for controlling animal pests, such as insects, arachnids and, in particular, nematodes.
Abstract:
The invention relates to a process for preparing ar(alk)yluracils of the general formula (I) in which A represents a single bond or represents alkanedlyl, Ar represents optionally substituted aryl, R1 represents optionally substituted alkyl and R2 represents hydrogen, halogen or alkyl, and to novel intermediates for this purpose and to processes for their preparation.
Abstract:
The present invention relates to a novel process for preparing 3-(1-hydroxyphenyl-1-alkoximinomethyl)dioxazines which are known as intermediates for preparing compounds having fungicidal properties (WO 95-04728). Furthermore, the invention relates to novel 3-(1-hydroxyphenyl-1-alkoximinomethyl)dioxazines, to novel intermediates for their preparation and to a plurality of processes for preparing the novel intermediates.
Abstract:
The invention relates to a novel process for the preparation of 1,2,4-triazine-3,5-diones by decarboxylation of corresponding 6-carboxy-1,2,4-triazine-3,5-diones, characterized in that it is carried out in aprotic organic solvents.