摘要:
A process is described for preparing isoxazoles of the formula I wherein R1 is hydrogen, C1-C6-alkyl, R2 is C1-C6-alkyl, R3, R4, R5 are hydrogen, C1-C6-alkyl, or R4 and R5 together form a bond, R6 is a heterocyclic ring, n is 0, 1 or 2; in which an intermediate of the formula VI is prepared, followed by halogenation, thiomethylation, oxidation and acylation to give compounds of formula I. Novel intermediates for preparing the intermediates are described.
摘要:
A process for preparing 4-thioalkylbromobenzene derivatives of the formula I where: R1 is C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy, C3-C8-cycloalkyl, halogen, R2 is C1-C6-alkyl, C1-C6-alkoxy, C3-C8-cycloalkyl, C2-C6-alkenyl, cyano or a heterocyclic radical, R3 is C1-C6-alkyl, which comprises reacting a compound of the formula II, in which R1 and R2 are as defined above, with a dialkyl disulfide of the formula III R3—S—S—R3III in the presence of a nitrite and a catalyst in a suitable solvent is described.
摘要:
The present invention describes a process for preparing isoxazoles of the formula I where: R1 is hydrogen, C1-C6-alkyl, R2 is hydrogen, C1-C6-alkyl, R3, R4, R5 are each hydrogen, C1-C6-alkyl or R4 and R5 together form a bond, R6 is a heterocyclic ring, n is 0, 1 or 2; which comprises preparing an intermediate of the formula VI where R1, R3, R4 and R5 are each as defined above, followed by halogenation, thiomethylation, oxidation and acylation to give compounds of the formula I. Furthermore, the invention describes novel intermediates for preparing the compounds of the formula I and novel processes for preparing the intermediates.
摘要:
A novel process for preparing the compounds of the formula I where: n is 0, 1 or 2; R1, R2 are C1-C6-alkyl; R3, R4, R5 are hydrogen or C1-C6-alkyl, or R4 and R5 together form a bond; R6 is Cl, Br, which comprises a synthesis sequence starting from 1,2-dialkylbenzenes of the formula II with subsequent halogenation to give 3,6-dihalo-1,2-dialkylbenzenes, haloalkylation to give benzyl bromides, oxidation to give benzaldehydes, oximation, reaction with alkenes to give isoxazoles, conversion into thioethers and, if appropriate, oxidation to give sulfenyl or sulfonyl derivatives of the formula I.
摘要翻译:一种制备式I化合物的新方法,其中n为0,1或2; R 1,R 2为C 1 -C 6 - 烷基; R 3,R 4,R 5为氢或C 1 -C 6烷基,或者R 4和R 5一起形成 R 6是Cl,Br,其包含从式II的1,2-二烷基苯开始的合成序列,随后卤化以得到3,6-二卤代-1,2-二烷基苯,卤代烷基化得到苄基溴,氧化得到 苯甲醛,肟化,与烯烃的反应得到异恶唑,转化成硫醚,如果合适,氧化得到式I的磺酰基或磺酰基衍生物。
摘要:
The present invention describes a process for preparing isoxazoles of the formula I where: R1 is hydrogen, C1-C6-alkyl, R2 is hydrogen, C1-C6-alkyl, R3, R4, R5 are each hydrogen, C1-C6-alkyl or R4 and R5 together form a bond, R6 is a heterocyclic ring, n is 0, 1 or 2; which comprises preparing an intermediate of the formula VI where R1, R3, R4 and R5 are each as defined above, followed by halogenation, thiomethylation, oxidation and acylation to give compounds of the formula I. Furthermore, the invention describes novel intermediates for preparing the compounds of the formula I and novel processes for preparing the intermediates.
摘要:
A novel process for preparing the compounds of the formula I where: n is 0, 1 or 2; R1, R2 are C1-C6-alkyl; R3, R4, R5 are hydrogen or C1-C6-alkyl, or R4 and R5 together form a bond; R6 is Cl, Br, which comprises a synthesis sequence starting from 1,2-dialkylbenzenes of the formula II with subsequent halogenation to give 3,6-dihalo-1,2-dialkylbenzenes, haloalkylation to give benzyl bromides, oxidation to give benzaldehydes, oximation, reaction with alkenes to give isoxazoles, conversion into thioethers and, if appropriate, oxidation to give sulfenyl or sulfonyl derivatives of the formula I.
摘要翻译:一种制备式I化合物的新方法,其中n为0,1或2; R 1,R 2为C 1 -C 6 - 烷基; R 3,R 4,R 5为氢或C 1 -C 6烷基,或者R 4和R 5一起形成 R 6是Cl,Br,其包含从式II的1,2-二烷基苯开始的合成序列,随后卤化以得到3,6-二卤代-1,2-二烷基苯,卤代烷基化得到苄基溴,氧化得到 苯甲醛,肟化,与烯烃的反应得到异恶唑,转化成硫醚,如果合适,氧化得到式I的磺酰基或磺酰基衍生物。
摘要:
A novel process for preparing the compounds of the formula I where: n is 0, 1 or 2; R1, R2 are C1-C6-alkyl; R3, R4, R5 are hydrogen or C1-C6-alkyl, or R4 and R5 together form a bond; R6 is Cl, Br, which comprises a synthesis sequence starting from 1,2-dialkylbenzenes of the formula II with subsequent halogenation to give 3,6-dihalo-1,2-dialkylbenzenes, haloalkylation to give benzyl bromides, oxidation to give benzaldehydes, oximation, reaction with alkenes to give isoxazoles, conversion into thioethers and, if appropriate, oxidation to give sulfenyl or sulfonyl derivatives of the formula I.
摘要翻译:一种制备式I化合物的新方法,其中n为0,1或2; R 1,R 2为C 1 -C 6 - 烷基; R 3,R 4,R 5, 或者R 4和R 5一起形成键; R 6是Cl,Br,其包含从式II的1,2-二烷基苯开始的合成序列,随后 卤化得到3,6-二卤代-1,2-二烷基苯,卤代烷基化得到苄基溴,氧化得到苯甲醛,肟化,与烯烃反应得到异恶唑,转化成硫醚,如果合适,氧化得到亚硫酰基或磺酰基衍生物 的式I。
摘要:
The present invention describes a process for preparing isoxazoles of the formula I where: R1 is hydrogen, C1-C6-alkyl, R2 is hydrogen, C1-C6-alkyl, R3, R4, R5 are each hydrogen, C1-C6-alkyl or R4 and R5 together from a bond, R6 is a heterocysclic ring, n is 0, 1 or 2; which comprises preparing an intermediate of the formula VI where R1, R3, R4 and R5 are each as defined above, followed by halogenation, thiomethylation, oxidation and acylation to give compounds of the formula I. Furthermore, the invention describes novel intermediates for preparing the compounds of the formula I and novel processes for preparing the intermediates.
摘要:
A process for preparing 4-bromoaniline derivatives of the formula I where: R1 is C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy, C3-C8-cycloalkyl, halogen R2 is C1-C6-alkyl, C1-C6-alkoxy, C3-C8-cycloalkyl, C2-C6-alkenyl, cyano or a heterocyclic radical is described.
摘要:
The present invention relates to a process for manufacturing aryloxyacetamides of formula (I), by reacting haloacetamides of formula (II) with a phenol of formula (III); wherein the variables are defined according to the description, and aryloxyacetamides of formula (I).