摘要:
3-Phenoxy-.alpha.-phenoxy-alkancarboxylic acid derivatives of the formula ##STR1## are disclosed as possessing a surprising selective herbicidal activity. In the formula, Hal is a halogen atom, m is an integer 1, 2 or 3, Y is a hydrogen or halogen atom or the cyano group, Z is a halogen atom or the cyano group, R.sub.1 is hydrogen or C.sub.1 -C.sub.8 alkyl, and R is an acid function. Methods are disclosed for combatting weeds in mono- and dicotyledonous cultures such as cereals, corn, rice, soya and cotton, which comprise applying to the locus to be protected from weeds a dosage of from 0.1 to 10.0 kilograms per hectare of the above compounds.
摘要:
The present invention relates to novel herbicidally active 4-(p-trifluoromethylphenoxy)-.alpha.-phenoxypropionic acid alkoxyalkyl amides, processes for their manufacture and also herbicidal compositions which contain them. The preferred utility of the novel compounds is the selective control of monocotyledonous weeds.The novel compounds have the general formula I ##STR1## wherein "alkylene" represents a straight or branched saturated hydrocarbon chain of 1 to 4 carbon atoms and R represents an alkyl radical of 1 to 4 carbon atoms.The novel compounds are obtained by reacting a halide or lower alkyl ester of 4-(p-trifluoromethylphenoxy)-.alpha.-phenoxypropionic acid with an alkoxyalkyl amineH.sub.2 N-alkylene-O-Ror by reacting a hydroxydiphenyl ether ##STR2## wherein Y is hydrogen or a cation, with an .alpha.-halopropionic acid alkoxyalkyl amide of the formula ##STR3## in the presence of an acid acceptor. Preferred compounds of the formula I are an N-(2-methoxy)-ethylamide and N-(3-methoxy)-propyl-(2)-amide.
摘要:
Phenoxyalkyloxyzolines corresponding to the formula ##STR1## wherein R is hydrogen or methylZ is a Phenyl-or Pyridyl-radical ##STR2## R.sub.1 is halogen, trifluoromethyl, cyano or nitro R.sub.2 is hydrogen, halogen or cyanoR.sub.3 is halogen trifluoromethyl or cyano andn is 1 or 2.are effective herbicides which are tolerant towards cereal.
摘要:
Pyridylthio- or dithiophosphoric acid esters of the formula ##EQU1## wherein R.sub.1 represents n-propyl, isobutyl, sec.-butyl or n-pentyl,R.sub.2 represents hydrogen, chlorine, bromine, cyano, nitro, (C.sub.1 -C.sub.4 -alkoxy)carbonyl, mono(C.sub.1 -C.sub.4 -alkyl)carbamoyl or di(C.sub.1 -C.sub.4 -alkyl)carbamoyl,R.sub.3 represents hydrogen, chlorine, bromine or methyl, andX represents oxygen or sulphur and their use for combating pests are disclosed.
摘要:
Triazolylthiophosphonic esters corresponding to the formula ##SPC1##Wherein R.sub.1 represents a phenyl radical which is substituted by one or more fluorine, bromine and/or iodine atoms, by lower alkyl, lower alkoxy, lower alkylthio, lower trihalogenoalkyl, lower alkyl-SO, lower alkyl-SO.sub.2 or O.sub.2 N groups, which may be the same or different, or by at least one chlorine and at least one fluorine, bromine or iodine atom, one lower alkyl, lower alkoxy, lower alkylthio, lower trihalogenoalkyl, lower alkyl-SO, lower alkyl-SO.sub.2 or O.sub.2 N group, or represents an unsubstituted or halogenated and/or alkoxylated phenyl-lower alkyl radical or diphenylmethyl, and one of the symbols R.sub.2 and R.sub.3 represents hydrogen or a lower alkyl radical and the other represents the radical ##EQU1## wherein R.sub.4 represents a lower alkyl radical or the phenyl radical and R.sub.5 represents a lower alkyl radical their manufacture and their use in pest control.
摘要:
1,5-Diphenyl-1,2,4-triazole-3-carboxylic acid derivatives of formula ##STR1## wherein each of R.sub.a and R.sub.b, independently of the other, is halogen, C.sub.1 -C.sub.5 alkyl, C.sub.1 -C.sub.5 haloalkyl, C.sub.2 -C.sub.5 alkenyl, C.sub.2 -C.sub.5 alkynyl or cyano, n is zero or a number from 1 to 3 and OR is hydroxy, a phytophysiologically tolerable metal or ammonium salt radical, or an ester radical defined in the description, are capable of specifically antagonizing the phytotoxic action of herbicides.1,5-Diphenyl-1,2,4-triazole-3-carboxylic acid derivatives of formula I and the preparation thereof, compositions containing these components as selective herbicides and the use of these two active ingredient components for controlling weeds in crops of useful plants are described.
摘要:
The invention relates to novel 4-methyltetrahydrophthalimides of the formula I ##STR1## in which the substituents R.sub.1, R.sub.2, R.sub.3 and X have the meanings explained in the text, to processes for their preparation, and to novel selective herbicidal compositions containing compounds of the formula I.
摘要:
Novel 5-(N-3,4,5,6-tetrahydrophthalimido)benzoic acid esters of formula I below have good selective herbicidal properties pre- and postemergence and also influence or inhibit plant growth.The novel compounds are of formula I ##STR1## wherein n is 0, 1 or 2,R is C.sub.1 -C.sub.3 alkyl,R.sub.1 is hydrogen or halogen,R.sub.2 is halogen,X is oxygen or sulfur,A is a straight chain or branched C.sub.1 -C.sub.4 alkylene bridge,Q is a 5- or 6-membered heterocycle which is bound through carbon or nitrogen and contains 1 to 3 hetero atoms and may further contain one or two carbonyl groups, which heterocycle may be fused to benzene rings and substituted by halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.3 haloalkyl, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 haloalkoxy, nitro, cyano, C.sub.1 -C.sub.3 alkylamino or di(C.sub.1 -C.sub.3)alkylamino, or Q is C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 alkylsulfonyl, C.sub.2 -C.sub.8 alkoxyalkyl, nitro or di(C.sub.1 -C.sub.4)alkylamino, or is a benzyloxy, phenoxy or phenylthio radical, each of which may be substituted in the phenyl nucleus by halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.3 haloalkyl, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 haloalkoxy, nitro, cyano, C.sub.1 -C.sub.3 alkylamino or di(C.sub.1 -C.sub.3)alkylamino, or, if X is sulfur, Q may also be a COOR.sub.3 radical, in which R.sub.3 is C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl or C.sub.3 -C.sub.7 cycloalkyl, each of which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.4 alkoxy.
摘要:
Novel derivatives of N-phenylmaleic acid imide and N-phenylsuccinimide have good pre- and post-emergence selective herbicidal properties and they influence plant growth. The compounds correspond to the formula I ##STR1## in which .vertline.: represent a single or double bond,R.sup.1 represents hydrogen or fluorine,R.sup.2 represents halogen,Y represents C.sub.1 -C.sub.8 -alkyl,Z represents hydrogen or C.sub.1 -C.sub.8 -alkyl, andA represents hydrogen or a group ##STR2## wherein R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 represent customary organic radicals and X represents oxygen, sulphur, SO, SO.sub.2, NH, alkylimino or alkenylimino.
摘要:
The invention relates to novel sulfonylureas of the formula I ##STR1## wherein R.sub.1 is hydrogen or C.sub.1 -C.sub.5 alkyl,R.sub.2 and R.sub.3, each independently of the other, are hydrogen, C.sub.1 -C.sub.5 alkyl, C.sub.1 -C.sub.5 alkoxy, C.sub.1 -C.sub.5 alkylthio, C.sub.1 -C.sub.5 haloalkyl, halogen, C.sub.1 -C.sub.5 haloalkylthio, C.sub.1 -C.sub.4 alkylamino, C.sub.1 -C.sub.4 dialkylamino, an alkoxyalkyl group or alkoxyalkoxy group, each containing not more than 6 carbon atoms,Z is oxygen or sulfur,E is --CH.dbd. or --N.dbd., andQ is an unsubstituted or substituted 6-membered heterocyclic radical containing 2 to 3 nitrogen atoms and bound through a carbon atom,and the salts thereof.A process for the preparation of the novel compounds and the use thereof are also described. The compounds of formula I can be used in the form of agriculturally useful compositions for controlling weeds and/or for selectively influencing plant growth.