摘要:
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.
摘要:
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.
摘要:
The invention relates to a method for production of 1-alkyl-3- phenyluracils of formula (I), where the variables R1 to R7 have the meanings given in the description, whereby 3-phenyluracils of formula (II) and alkylating agents of formula (III) are reacted together, characterised in that during the complete reaction the pH is maintained in the range of 1 to 6 by portioned addition of base.
摘要:
The present invention relates to a method for producing sulfonic acid amines of the general formula (I) R1R2N-S(O)2-NH2 (I), where R1 and R2 are independent of each other and stand for a primary alkyl radical having 1 to 8 C atoms, a secondary alkyl radical having 3 to 8 C atoms, or a cycloalkyl radical having 5 to 8 C atoms, or, together with the nitrogen atom, form a 5- to 8-member saturated nitrogen heterocyclic compound that can comprise, in addition to the nitrogen atom, an additional hetero atom, selected from O and S, as a ring member, wherein the nitrogen heterocyclic compound is unsubstituted, or can comprise 1, 2, 3, or 4 alkyl groups each having 1 to 4 C atoms as substituents. The method comprises the following steps: i) conversion of a secondary amine of the formula (II) R1R2NH (II), where R1 and R2 have the meaning indicated above, having sulfuryl chloride in an inert, particularly aromatic, solvent in the presence of a tertiary amine, to form a sulfamoyl chloride of the formula (III) R1R2N-S(O)2-CI (III), where R1 and R2 have the meaning indicated above, and ii) conversion of the sulfamoyl chloride of the formula (III) obtained in step i) using ammonia, wherein in step ii) the sulfamoyl chloride of the formula (III) is used in the form of the solution obtained in step i) in the inert, particularly aromatic, solvent.
摘要:
The present invention relates to a process for preparing difluoromethyl-substituted pyrazol-4-yl carboxylates of the formula (I) in which R1 is C1-C8-alkyl, C3-C8-cycloalkyl, C1-C4-alkoxy-C1-C4-alkyl, etc.; and R2 is hydrogen, C1-C4-alkyl, benzyl or phenyl, wherein a) a compound of the general formula (II) in which X is fluorine, chlorine, or bromine, R1 has one of the definitions given above, and R4 is C1-C8-alkyl, C3-C8-cycloalkyl, C2-C8-alkenyl, benzyl or phenyl, is reacted with a silane compound of the general formula R3nSiCl(4-n) in which n is 1, 2 or 3 and the substituents R3 are each independently selected from C1-C8-alkyl and phenyl, and with a metal which is selected from the metals of groups 1, 2, 3, 4 and 12 of the periodic table and has a redox potential of less than -0.7 V, based on a standard hydrogen electrode (at 25°C and 101.325 kPa); and b) the reaction mixture from step a) is reacted with a compound of the general formula (III) in which R2 has one of the definitions given above.
摘要:
The present invention relates to hydrates 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 these hydrates, and to formulations for crop protection which comprise hydrates of the phenyluracil I.
摘要:
The present invention relates to a process for preparing difluoromethyl-substituted pyrazol-4-yl carboxylates of the formula (I) in which R1 is C1-C8-alkyl, C3-C8-cycloalkyl, C1-C4-alkoxy-C1-C4-alkyl, etc.; and R2 is hydrogen, C1-C4-alkyl, benzyl or phenyl, wherein a) a compound of the general formula (II) in which X is fluorine, chlorine, or bromine, R1 has one of the definitions given above, and R4 is C1-C8-alkyl, C3-C8-cycloalkyl, C2-C8-alkenyl, benzyl or phenyl, is reacted with a silane compound of the general formula R3nSiCl(4-n) in which n is 1, 2 or 3 and the substituents R3 are each independently selected from C1-C8-alkyl and phenyl, and with a metal which is selected from the metals of groups 1, 2, 3, 4 and 12 of the periodic table and has a redox potential of less than -0.7 V, based on a standard hydrogen electrode (at 25°C and 101.325 kPa); and b) the reaction mixture from step a) is reacted with a compound of the general formula (III) in which R2 has one of the definitions given above.
摘要:
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.