Abstract:
The invention relates to methods for producing sulfonamides of formula I, wherein the variables have the designations cited in the description, by reacting m-nitro-benzoic acid chlorides of formula II with aminosulfons of formula III, under the influence of B equivalents of base IV. Said method is characterised in that, during step a) the aminosulfon of formula III is reacted with B1 equivalents of base IV, and during step b), the reaction mixture resulting from step a) is reacted with m-nitro-benzoic acid chlorides of formula II and B2 equivalents of base IV; B, B1 and B2 having the designations cited in the description.
Abstract:
The present invention relates to a crystalline form of 2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1-(2H)-pyrimidinyl]-4-fluoro-N-[[methyl-(1-methylethyl)amino]sulphonyl]benzamide. The invention also relates to a method for preparing this crystalline form and to formulations for crop protection which comprise this crystalline form of the phenyluracil.
Abstract:
The invention relates to a method for the production of 3-phenyl(thio)uracils and dithiouracils of formula I, wherein the variables have the meanings cited in the description, characterized in that carbamates of formula II, wherein variables X1, X3, Ar and A have the above-mentioned meanings and L1 represents a nucleophilically displaceable nucleofuge, can be reacted with enamines of formula III, wherein variables X2, R1, R2 and R3 have the above-mentioned meanings and L2 represents a nucleophilically displaceable nucleofuge. The invention also relates to intermediate products for the production thereof.
Abstract:
The invention relates to a compound of the formula III: (see formula III) where R1 is C1-C6-alkyl. It also relates to a process for preparing compounds of the formula XV: (see formula XV) wherein: X is S(O)n Ry, R1 is C1-C6-alkyl, halogen, C1-C6-alkoxy or C1-C6-alkylthio, R X is halogen, carboxamide, N-alkyl-carboxamide, N,Ndialkylcarboxamide, phenyl, C1-C6-alkyl, C1-C6 alkoxy or C1-C6-alkylthio, R y is C1-C6-alkyl, m is 1, and n is 0, 1 or 2.
Abstract:
A process for preparing 4-thioalkylbromobenzene derivatives of the formula I where: R 1 is C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 1 -C 6 -alkoxy, C 1 -C 6 -haloalkoxy, C 3 -C 8 -cycloalkyl, halogen, R 2 is C 1 -C 6 -alkyl, C 1 -C 6 -alkoxy, C 3 -C 8 -cycloalkyl, C 2 -C 6 -alkenyl, cyano or a heterocyclic radical, R 3 is C 1 -C 6 -alkyl, which comprises reacting a compound of the formula II, in which R 1 and R 2 are as defined above, with a dialkyl disulfide of the formula III R 3 -S-S-R 3 III in the presence of a nitrite and a catalyst in a suitable solvent is described.
Abstract:
The invention relates a process for preparing 4-thioalkylbromobenzene derivtaes of the formula (I) where R1 is C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6haloalkoxy, C3-C8-cykloalkyl, halogen, R2 is C1-C6-alkyl, C1-C6-alkoxy, C3-C8-cykloalkyl, C2-C6-alkenyl, cyano or a heterocyclic radical, R3is C1-C6 alkyl, which comprises reacting a compound of the formula (II), in which R1 and R2 are as defined above, with dialkyl disulfide of the formula (III), in the presence of a nitrite and catalyst in a suitable solvent and molar ratio of catalyst and compound of the formula (II) is 0.005 : 1 to 0.05 : 1.
Abstract:
Un proceso de preparación de los isoxazoles de la fórmula I donde los sustituyentes son como se definen abajo: R1 es un hidrógeno, alquilo C1-C6, R2 es un alquilo C1-C6, R3, R4, R5 son hidrógeno, alquilo C1-C6, o R4 y R5 juntos forman un enlace, R6 es un anillo heterocíclico, n es 0, 1 o 2; que comprende la preparación de un intermediario de la fórmula VI donde R1, R3, R4 y R5 son como se definieron arriba.