Abstract: The present invention relates to a process for the preparation of the compounds II from the respective oxo compounds. Furthermore, he invention relates to a process for the preparation of triazole compounds from oxiranes II.

Abstract: The present invention relates to a process for providing a compound of formula (IV): wherein R1 and R2 are each independently C1-C4 alkyl, and Hal is independently Cl or Br, the process comprising the steps of: (i) reacting a compound of formula (II) wherein R1 and Hal is defined as above, to obtain a compound of formula (III) wherein R1 and Hal is defined as above, and (ii) reacting the compound of formula (III) to obtain the compound of formula (IV).

Abstract: A process for purifying 2,5-dichlorophenol, the process comprising the steps of distillation and subsequent crystallization.

Abstract: The present invention relates to a process for providing a compound of formula (I): wherein Hal is a halogen, the process comprising the step of: reacting a compound of formula (II) wherein Hal is defined as above, with an alkali metal sulfite of the formula X2SO3 and an alkali metal hydroxide of the formula YOH, wherein X and Y are independently selected from an alkali metal.

Abstract: The present invention relates to a process for providing a compound of formula (IV): wherein R1 and R2 are each independently C1-C4 alkyl, and Hal is independently Cl or Br, the process comprising the steps of: (i) reacting a compound of formula (II) wherein R1 and Hal is defined as above, to obtain a compound of formula (III) wherein R1 and Hal is defined as above, and (ii) reacting the compound of formula (III) to obtain the compound of formula (IV).

Abstract: The present invention relates to a process for providing dihalogen substituted salicylic acid derivatives of formula (II):

Abstract: A process for purifying 2,5-dichlorophenol, the process comprising the steps of distillation and subsequent crystallization.

Abstract: The present invention relates to a process for providing a compound of formula (I): wherein R is hydrogen or R?, wherein R? is -(C1-C4)alkyl, and Hal is a halogen, the process comprising the step of: reacting a compound of formula (II) wherein Hal is defined as above, with an alkali metal alkoxide of the formula XOR?, wherein X is an alkali metal, and R? is defined as above.

Abstract: The present invention relates to a process for providing a compound of formula (I): wherein Hal is a halogen, the process comprising the step of: reacting a compound of formula (II) wherein Hal is defined as above, with an alkali metal sulfite of the formula X2SO3 and an alkali metal hydroxide of the formula YOH, wherein X and Y are independently selected from an alkali metal.

Abstract: The present invention relates to a process for preparing substituted isatoic acid anhydride compounds of the formula (I) in which R1 is Cl, Br, I, or CN; and R2 is CH3, Cl, Br; using anthranilic acid derivative compounds of formula (III) and/or carbamate compounds of formula (II) wherein R1 and R2 are as defined above; RAr is CH3, Cl, NO2 and n is 0, 1, 2, 3, 4 or 5; The present invention relates also to the compounds of formula (II) and to processes comprising further preceding and/or subsequent reaction steps, leading to anthranilamide pesticides or to precursors for them.

Abstract: The present invention relates to a process for preparing pyridylpyrazole compounds of the formula (I) starting from pyridylhydrazine of formula (II) The present invention relates also to processes comprising further preceding and/or subsequent reaction steps, leading to anthranilamide pesticides or to precursors for them.

Abstract: The present invention relates to a process for preparing N-substituted 1H-pyrazole-5-carboxylic acid compounds of the formula I-A and derivatives thereof, in particular the corresponding carbonylchloride compounds (acid chlorides). It also relates to the use of these acid chlorides for preparing anthranilamide derivatives that are useful pesticides.

Abstract: The present invention relates to a process for preparing a compound of the formulae (Ia) or (Ib), or a mixture thereof, wherein R1 and R2 independently of one another are hydrogen, C1-C10-alkyl, C1-C10-haloalkyl, C3-C10-cycloalkyl, C3-C10-halocycloalkyl, C2-C10-alkenyl, C2-C10-haloalkenyl or together represent an aliphatic chain, or the like; A? is HSO4? or 1/2 SO42?; the process comprising the reaction of a sulfide of formula SR1R2 with hydroxylamineO-sulfonic acid of formula; wherein the reaction is carried out in an aqueous medium in the presence of a base.

Abstract: The present invention relates to a process for the preparation of the compounds II from the respective oxo compounds. Furthermore, he invention relates to a process for the preparation of triazole compounds from oxiranes II.

Abstract: The present invention relates to a process for preparing a diol of the formulae (Ia) or (Ib), or a mixture thereof, comprising the reaction of an epoxy alcohol of formulae (Va) or (Vb), or a mixture thereof, with alkali metal borohydride or earth alkaline borohydride, in particular sodium borohydride, and anhydrous aluminum(III) chloride. The invention also relates to processes and intermediates for preparing an epoxy alcohol of formulae (Va) or (Vb). The invention furthermore relates to processes for preparing cis-metconazole in which a diol of the formulae (Ia) or (Ib) is applied as a precursor.

Abstract: The present invention relates to a process for preparing substituted 2-nitrobiphenyls and to specific 2-nitrobiphenyls. The invention further relates to a process for preparing 2-aminobiphenyls from such 2-nitrobiphenyls and to a process for preparing (het)arylamides of such 2-aminobiphenyls.

Abstract: The present invention relates to a process for preparing substituted 2-aminobiphenyls and to a process for preparing (Het)arylamides of such 2-aminobiphenyls.

Abstract: The present invention relates to a process for preparing 1,3-substituted pyrazole compounds of the formula I in which X is especially a CX1X2X3 group in which X1, X2 and X3 are each independently especially hydrogen, fluorine or chlorine, R1 is C1-C4-alkyl or cyclopropyl, and R2 is hydrogen, CN or a CO2R2a group in which R2a is especially C1-C6-alkyl, comprising the following steps: i) reacting a compound of the formula II with a hydrazone of the formula III where the variables X and R2 in formula II are each as defined for formula I, Y is oxygen, an NRy1 group or an [NRy2Ry3]+Z? group, R3 is OR3a or an NR3bR3c group, and where the variable R1 in formula III is as defined for formula I, R4 and R5 are each independently hydrogen, C1-C6-alkyl, optionally substituted phenyl, where at least one of the R4 and R5 radicals is different from hydrogen, and where R4 and R5 together with the carbon atom to which they are bonded may also be a 5- to 10-membered saturated carbocycle; ii) treating the reac

Abstract: The present invention relates to a process for preparing difluoromethyl-substituted pyrazol-4-ylcarboxylic acids and their esters, 2-(aminomethylidene)-4,4-difluoro-3-oxobutteric esters of the formula (I) in which R1, R2 and R3 independently of one another are C1-C6-alkyl, C1-C6-haloalkyl, C2-C6-alkenyl, C3-C10-cycloalkyl or benzyl or NR2R3 is a 5- to 10-membered heterocyclic radical, to a process for preparing compounds of the formula (I) wherein an appropriate 3-aminoacrylic ester is reacted with difluoroacetyl fluoride and to the use of compounds of the formula (I) in the process for preparing difluoromethyl-substituted pyrazol-4-ylcarboxylic acids and their esters.

Abstract: The present invention relates to a process for preparing 2-(aminomethylidene)-4,4-dihalo-3-oxobutyric esters of the formula (I), wherein R1, R2, R3 are C1-C6-alkyl, C1-C6-haloalkyl, C2-C6-alkenyl, C3-C10-cycloalkyl or benzyl, and/or R2 together with R3 and the nitrogen atom to which the two radicals are attached are a heterocyclic radical, in which a corresponding 3-aminoacrylic ester is reacted with a halogen-substituted acetyl fluoride in the presence of at least one alkali or alkaline earth metal fluoride; and the further conversion of halogen-substituted 2-(aminomethylidene)-3-oxobutyric esters of the formula (I) to halomethyl-substituted pyrazol-4-ylcarboxylic acids and their esters.