Abstract:
4-Aryl-1-difluoromethoxyimidazoles of formula (I) are disclosed, where the substituents R and R have the meanings given in the description. Compounds of formula (I) are effective herbicides and can be used for the treatment of undesired plant growth. Furthermore, compounds of formula (I) are suitable for the desiccation and/or defoliation of plants, in particular, of cotton. The invention further relates to herbicidal agents and agents for desiccation and/or defoliation of plants.
Abstract:
The invention relates to a method for producing anellated tetrahydro-[1H]-triazoles of formula I wherein the variables R , Z, Z , X, W, n and Q have the designations cited in patent claim 1, by cyclising compounds of general formula II wherein R represents C(X)OR or C(X)SR , X represents oxygen or sulphur, and R has the designation cited in patent claim 1, in the presence of a base. The invention also relates to compounds of general formula I wherein W represents sulphur if Z represents a methylene group which is optionally substituted by R , as well as other compounds of formula I wherein Q represents a benzoxazole or benzothiazole radical. The invention further relates to the uses of said compounds as herbicides.
Abstract:
The present invention relates to substituted benzoxazoles of general formula (I) wherein R?1, R2 and R3¿ have the meanings cited in claim 1, and Het stands for a 5- or 6-membered heterocycle bonded by nitrogen and having general formulae (II-1) to (II-18). The invention also relates to agents containing such compounds as well as to a method for combating undesired plant growth; the compounds of general formulae (III), (IV) and (V) are used as intermediate products for the production of the formula (I) compoun ds.
Abstract:
Bifunctional phenyl iso(thio)cyanate derivatives (I) are new. Also new are aniline and nitrobenzene derivative intermediates (II) and (V). Bifunctional phenyl iso(thio)cyanate derivatives of formula W=C=N-Ar-CO-NH-SO 2-A (I) are new. W : O or S; Ar : phenylene (optionally substituted by one or more of halo, 1-4C haloalkyl and CN), and A : NH 2 or the residue of a primary or secondary amine. Independent claims are also included for: (a) preparation of (I); (b) new aniline and nitrobenzene derivative intermediates of formulae H 2N-Ar-CO-NH-SO 2-A (II) and O 2N-Ar-CO-NH-SO 2-A (V), and (c) preparation of 4-(sulfamidocarbonyl-phenyl)-1,2,4-triazolinedione derivatives of formula (VI) by reacting an ester of diaza-ester of formula R 4>-NH-NR 3>-C(W')OR' (VII) and cyclizing the obtained urea derivative of formula R'O-C(=W')-N(R 3>)-N(R 4>)-C(=W)-NH-Ar-CO-NH-SO 2-A (VIII). [Image] W' : O or S; R 3>, R 4> : H, CN, NH 2, 1-6C alkyl, 1-6C haloalkyl, 1-6C alkoxy, 1-6C haloalkoxy, 3-7C cycloalkyl, 2-6C alkenyl, 2-6C haloalkenyl, 3-6C alkynyl, benzyl, OR 5> or (1-3C) cyanoalkyl, or R 3> + R 4> : a group completing 4-7 membered heterocyclyl optionally interrupted by S, O, NR 6> or N and optionally substituted by one or more of halo or 1-4C alkyl; R 5> : H, 1-6C alkyl, 1-6C haloalkyl, 3-7C cycloalkyl, 2-6C alkenyl, 3-6C alkynyl, optionally substituted phenyl or optionally substituted benzyl; R 6> : H, 1-6C alkyl, 3-6C alkenyl or 3-6C alkynyl, and R' : 1-4C alkyl. ACTIVITY : Herbicide. MECHANISM OF ACTION : None given.
Abstract:
Disclosed are 3-heterocyclyl substituted benzoic acid derivatives of general formula (I), in which the variables R1 to R8 and X have the meanings indicated in claim 1, and the use thereof as herbicides or for desiccating/defoliating plants.
Abstract:
The present invention relates to a process for preparing sulfamoyl halides of primary or secondary amines, comprising the following steps: i) reacting a primary or secondary amine A1 with at least equimolar amounts of SO 3 or an SO 3 source in the presence of at least equimolar amounts of a tertiary amine A2, based in each case on the amine A1, and ii) reacting the reaction mixture obtained in step i) with at least the amount of a phosphorus halide required by the stoichiometry; The invention further relates to a process for preparing sulfonic diamides, comprising the preparation of sulfamoyl halides by means of carrying out steps i) and ii) and subsequently reacting the sulfamoyl halide obtained with ammonia. The invention further relates to the use of this process for preparing active herbicidal ingredients having a sulfuric diamide structure. The invention further relates to novel sulfamoyl chlorides.
Abstract:
A process for preparing 7-(pyrazol-3-yl)benzoxazoles of the formula I in which the variables R 1 -R 6 are as defined in claim 1 , which process is characterized in that a 2-halo-3-(pyrazol-3-yl)anilide of the formula II, in which X is bromine or iodine is reacted with a base in the presence of a transition metal compound of subgroup VIIa, VIIIa or Ib of the Periodic Table of the Elements, is disclosed.
Abstract:
A process for preparing 7-(pyrazol-3-yl)benzoxazoles of the formula I in which the variables R 1 -R 6 are as defined in claim 1 , which process is characterized in that a 2-halo-3-(pyrazol-3-yl)anilide of the formula II, in which X is bromine or iodine is reacted with a base in the presence of a transition metal compound of subgroup VIIa, VIIIa or Ib of the Periodic Table of the Elements, is disclosed.
Abstract:
The invention relates to a method for producing phenyliso(thio)cyanates of general formula (I) according to which a compound of general formula (II) or the HCl adduct thereof is reacted with a phosgenating agent, wherein W represents oxygen or sulfur and Ar and A have the meanings as cited in Claim 1. The invention also relates to the use of phenyliso(thio)cyanates for producing plant protection products.