Abstract:
The present invention relates to a method for producing 2- (aminomethylidene)-4,4dihalo-3-oxobutyric acid esters of the formula (I), where 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 both radicals are bound, are a heterocyclic radical, wherein a corresponding 3-aminoacrylic acid ester is reacted with a halogen-substituted acetyl fluoride in the presence of at least one alkali or earth alkali metal fluoride. The invention also relates to the further reaction of halogen-substituted 2-(aminomethylidene)-3-oxobutyric acid esters of the formula (1) into halomethyl-substituted pyrazole-4-ylcarboxylic acids and the esters thereof.
Abstract:
The present invention relates to a method for preparing 1,3-substituted pyrazol compounds of formula (I), where X stands for a group CX1X2X3, with X1, X2 and X3 being hydrogen, fluorine or chlorine, independently of one another, R1 being an C1-C4 alkyl or cyclopropyl, and R2 being hydrogen, CN or a group CO2R2a, where R2a stands for C1-C6 alkyl in particular, comprising the following steps: i) reacting a compound of formula II with a hydrazone of formula (III), wherein in formula (II) the variables X and R2 have the same meaning as indicated for formula (I), Y stands for oxygen, a group NRy1 or a group [NRy2Ry3]+Z- , R3 stands for OR3a or a group NR3bR3c, and wherein in formula (III) the variable R1 has the same meaning as indicated for formula (I), R4 and R5 stand for hydrogen, C1-C6 alkyl, alternatively substituted phenyl, independent of one another, wherein at least one of the radicals R4 or R5 is different from hydrogen and where R4 and R5 can also stand for a 5 to 10-membered saturated carbocycle together with the carbon atom connected thereto; treatment of the reaction product obtained thereby with an acid in the presence of water.
Abstract:
Un procedimiento para la fabricación de amino-benzoxazinonas 4-propargiladas de fórmula (I),**Fórmula** en la que R1 es H o halógeno; R2 es halógeno; R3 es H o halógeno; y W es O o S; que comprende las siguientes etapas: (a) preparar cloruro de propargilo**Fórmula** haciendo reaccionar el alcohol propargílico**Fórmula** con cloruro de tionilo opcionalmente en presencia de un catalizador; y (b) hacer reaccionar el cloruro de propargilo preparado en la etapa (a) con una NH-benzoxazinona de fórmula (II),**Fórmula** o una sal del mismo, en la que R1, R2, R3 y W se definen como en la fórmula (I); opcionalmente en presencia de una base.
Abstract:
The present invention relates to a process for manufacturing fluoroaromatics of formula (I), A-F, comprising step a) diazotization of aminoaromaticsof formula (II) in anhydrous HF with an aqueous solution of a diazotizing agent; followed by step b) thermic decomposition of the diazonium salt of formula (III) resulting from step a); wherein the variables are defined according to the description.
Abstract:
The present invention relates to a process for manufacturing benzoxazinones of formula (I), wherein the variables are defined according to the description, by reacting carbamates of formula (II) are reacted with carbamat-benzoxazinones of formula (III) in the presence of a base.
Abstract:
La presente invención se refiere a un proceso para fabricar una benzoxazinona de la fórmula (I), haciendo reaccionar un compuesto nitro de la fórmula (II) con un agente reductor para obtener un compuesto amino de la fórmula (III), y luego haciendo reaccionar el compuesto amino de la fórmula (III) con un ácido; en donde las variables se definen de acuerdo a la descripción, y la benzoxazinona de la fórmula (I).
Abstract:
A process for preparing arylcarboxamides of the formula (I) where Ar=a mono- to trisubstituted phenyl, pyridyl or pyrazolyl ring, where the substituents are selected from halogen, C1-C4-alkyl and C1-C4-haloalkyl; M=thienyl or phenyl, which may bear a halogen substituent; Q=direct bond, cyclopropylene, fused bicyclo[2.2.1]heptane or bicyclo[2.2.1]heptene ring; R1=hydrogen, halogen, C1-C6-alkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, mono- to trisubstituted phenyl, where the substituents are selected from halogen and trifluoromethylthio, or cyclopropyl; by reacting an acid chloride of the formula (II) with an arylamine (III) in a suitable nonaqueous solvent, wherein, in the absence of an auxiliary base, a) the acid chloride (II) is initially charged, b) a pressure of from 0 to 700 mbar is established, c) the arylamine (III) is metered in an approximately stoichiometric amount and d) the product of value is isolated.
Abstract:
Método para la preparación de compuestos de la fórmula (I), **Fórmula**dondeR1 representa alquilo de C1-C6, haloalquilo de C1-C6, alquenilo de C2-C6, cicloalquilo de C3-C10 o bencilo, en cuyocaso ambos residuos mencionados de último están sin sustituir o tienen 1, 2 o 3 sustituyentes seleccionadosindependientemente entre sí de halógeno, CN, nitro, alquilo de C1-C4, haloalquilo de C1-C4, alcoxi de C1-C4 yhaloalcoxi de C1-C4;R2 y R3, independientemente entre sí, representan alquilo de C1-C6, haloalquilo de C1-C6, alquenilo de C2-C6,cicloalquilo de C3-C10 o bencilo, en cuyo caso los dos residuos mencionados de último están sin sustituir o tienen o1, 2 o 3 sustituyentes seleccionados independientemente entre sí de entre halógeno, CN, nitro, alquilo de C1-C4,haloalquilo de C1-C4, alcoxi de C1-C4 y haloalcoxi de C1-C4; oR2 conjuntamente con R3 y el átomo de nitrógeno al cual ambos residuos están enlazados representan un residuoheterocíclico de 5 a 10 miembros opcionalmente sustituidos, el cual puede comprender, además del átomo denitrógeno, 1, 2 o 3 heteroátomos más seleccionados entre O, N y S en calidad de miembros de anillo;R4 representa hidrógeno, flúor o cloro; yX1 y X2, independientemente entre sí, representan flúor o cloro;En el cual se hace reaccionar un compuesto de la fórmula (II),donde R1, R2 y R3 tienen uno de los significados dados previamente; con un compuesto de la fórmula X1X2R420 CC(>=O)-F en presencia de al menos un fluoruro de metal alcalino o de metal alcalino térreo.