Abstract:
Process for the enzymatic separation of phosphinothricin derivatives, which comprises treating a mixture of D- and L-phosphinothricin derivatives of the formulae (I) and (II) ##STR1## with a hydrolytically active enzyme in an aqueous or aqueous-organic medium.
Abstract:
Compounds of formula (I), where R.sup.1, R.sup.2, n, W, R.sup.3 and A are as defined in claim 1, are suitable for use as herbicides and plant growth regulators. They can be produced by a process similar to known processes. To produce them, new compounds of formula (II) are reacted with a carbamate of formula R*--O--CO--NR.sup.3 A, where R.sup.3 stands for phenyl or alkyl. The compounds of formula (II) can be obtained from the corresponding sulphochlorides.
Abstract:
Process for the preparation of sulfonylureasHerbicidal sulfonylureas of the formula I, ##STR1## in which X is --O--, --0--NR.sup.2 -- or --SO.sub.2 --NR.sup.2 --, Y is --N-- or CH,R.sup.1 is (substituted) alkyl, (substituted) alkenyl or (substituted) alkynyl, or else, where X.dbd.O, (substituted) phenyl,R.sup.2 is H, alkyl, alkenyl, alkynyl or cycloalkyl,R.sup.3, R.sup.4 are H, (substituted) alkyl or (substituted) alkoxy, halogen, alkylthio, alkylamino or dialkylamino andR.sup.5, R.sup.6 are H or alkyl, and their salts with acids or bases,are prepared by reacting compounds of the formula II ##STR2## with compounds of the formula III ##STR3##
Abstract:
Herbicide/safener combinations ofA) herbicides selected from the group of the 2-acylated 1,3-dicarbonyl compounds or salts thereof, andB) safeners B1 and/or B2 ##STR1## as they are defined in claim 1, are suitable for controlling harmful plants in crops such as cereals, maize and rice.
Abstract:
Compounds of the formula I ##STR1## where R.sup.1 to R.sup.9 are as defined in claim 1 are known as herbicides. When these compounds are applied in traditionally used amounts, this often results in damage to crop plants in the crops, when it is desired to achieve sufficient action against weeds typically occurring therein. However, according to the invention it is possible to reduce the application rates to 0.001 to 0.5 kg of a.i./ha in rice growing, and the action obtained against important harmful plants in rice from the species Sagittaria, Cyperus and Scirpus Eleocharis is nevertheless sufficient.
Abstract:
Compounds of formula (I) or salts thereof, ##STR1## in which J is a radical of the formula R.sup.1 SO.sub.2 --CR.sup.2 R.sup.3 --, R.sup.4 R.sup.5 N--SO.sub.2 --CR.sup.2 R.sup.3 --, or ##STR2## and wherein the radicals R.sup.1, R.sup.2, R.sup.3, R.sup.6, R.sup.7, R.sup.8, R.sup.*, A, W, m, n and 0 are defined as set forth in the specification, are suitable as selective herbicides and plant growth regulators.
Abstract:
Compounds of the formula I or salts thereof ##STR1## where R.sup.1 is H or an aliphatic radical; R.sup.2 and R.sup.3 are H, alkyl or phenyl; W is O, S, NR.sup.4 or NOR.sup.4 ; X is CHR.sup.2, O or NR.sup.4 ; L is a (substituted) phenyl, naphthyl or monocyclic heteroaryl radical, A is a (substituted) pyrimidyl, triazinyl, triazolyl or bicyclic heteroaryl radical, and m and n are 0 or 1, have advantageously herbicidal or plant growth-regulating properties.
Abstract:
Compounds of the formula I or their salts ##STR1## wherein R.sup.1 denotes substituted alkyl; (subst.) alkenyl; (subst.) alkynyl; R.sup.2 denotes halogen; nitro; (subst.) alkyl or (subst.) alkoxy; R.sup.3 denotes hydrogen; alkyl; alkenyl or alkynyl; R.sup.4 denotes a heterocyclic radical or the formulae ##STR2## where E is CH or N; and n denotes 0, 1, 2 or 3, possess excellent herbicidal and plant growth-regulating properties.
Abstract:
Process for the preparation of pyrimidines Pyrimidines of the formula I ##STR1## in which X and Y, independently of one another, denote oxygen or sulfur, R.sup.1 and R.sup.2, independently of one another, denote (C.sub.1 --C.sub.4) alkyl, (C.sub.1 --C.sub.4 -alkoxy)-C.sub.1 --C.sub.2 -alkyl or halo-C.sub.1 --C.sub.4 -alkyl, and R.sup.3 denotes C.sub.1 --C.sub.4 -alkyl, phenyl or phenoxy which may both be substituted by one, two or three radicals from the series comprising halogen, C.sub.1 --C.sub.4 -alkoxy and C.sub.1 --C.sub.4 -alkyl radicals, halo-C.sub.1 --C.sub.4 -alkyl or C.sub.1 --C.sub.4 -alkoxy, are obtained in a process in which propanediimidates of the formula II ##STR2## or salt thereof, are reacted with N-cyanoamides of the formula NC--NR.sup.4 --CO--R.sup.3 in which R.sup.4 denotes hydrogen or a cation, in an inert solvent. The compounds of the formula I are suitable as intermediates for the preparation of herbicidal sulfonylureas.
Abstract:
The compounds of the general formula (I) ##STR1## in which X denotes 0 or --SO.sub.2 --, Y denotes CH or N, R.sub.1 denotes alkyl, alkenyl or (C.sub.2 -C.sub.6)-alkinyl which are optionally substituted, R.sub.2 denotes alkyl, alkenyl, alkinyl or cyclohexyl, R.sub.3 and R.sub.4 denote H or alkyl, and R.sub.5 and R.sub.6 denote H, (substituted) alkyl, (substituted) alkoxy, halogen, alkylthio, monoalkylamino or dialkylamino, and also salts thereof, possess advantageous herbicidal properties against monocotyledonous and dicotyledonous weeds and are suitable for selective use in large-scale crops. In addition, they possess a good plant growth-regulating action.