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1. WO2020114813 - PROCESS FOR PREPARATION OF 5-BROMO-1,3-DICHLORO-2-FLUORO-BENZENE

Publication Number WO/2020/114813
Publication Date 11.06.2020
International Application No. PCT/EP2019/082352
International Filing Date 25.11.2019
IPC
C07C 17/35 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
35by reactions not affecting the number of carbon or halogen atoms in the molecules
C07C 25/08 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
25Compounds containing at least one halogen atom bound to a six-membered aromatic ring
02Monocyclic aromatic halogenated hydrocarbons
08Dichloro-benzenes
CPC
C07C 17/35
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
35by reactions not affecting the number of carbon or of halogen atoms in the reaction
C07C 25/08
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
25Compounds containing at least one halogen atom bound to a six-membered aromatic ring
02Monocyclic aromatic halogenated hydrocarbons
08Dichloro-benzenes
Applicants
  • BASF SE [DE]/[DE]
Inventors
  • KOERBER, Karsten
  • RACK, Michael
  • BINDSCHAEDLER, Pascal
  • MCLAUGHLIN, Martin John
  • GOCKEL, Birgit
  • VYAS, Devendra
  • SOERGEL, Sebastian
Agents
  • BASF IP ASSOCIATION
Priority Data
18209956.404.12.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR PREPARATION OF 5-BROMO-1,3-DICHLORO-2-FLUORO-BENZENE
(FR) PROCÉDÉ DE PRÉPARATION DE 5-BROMO-1,3-DICHLORO-2-FLUORO-BENZÈNE
Abstract
(EN)
The invention relates to a process for the preparation of 5-bromo-1,3-dichloro-2-fluoro-benzene by diazotization and reduction of 6-bromo-2,4-dichloro-3-fluoro-aniline, which is obtained by bromination of 2,4-dichloro-3-fluoro-aniline, which is obtained by reduction of 1,3- dichloro-2-fluoro-4-nitro-benzene, and a process for preparing active compounds of formula V (Formula V) wherein the variables are defined in the specification by further transforming 5-bromo-1,3- dichloro-2-fluoro-benzene obtained from 2,4-dichloro-3-fluoro-aniline by the process accord- ing to the invention.
(FR)
L'invention concerne un procédé de préparation de 5-bromo-1,3-dichloro-2-fluoro-benzène, le procédé consiste à réaliser une diazotation et une réduction de 6-bromo-2,4-dichloro-3-fluoro-aniline, obtenu par bromation de 2,4-dichloro-3-fluoro-aniline, qui est obtenu par réduction de 1,3-dichloro-2-fluoro-4-nitro-benzène ; l'invention concerne également un procédé de préparation de composés actifs de formule V (formule V), dans laquelle les variables sont définies dans la spécification, par transformation supplémentaire de 5-bromo-1,3-dichloro-2-fluoro-benzène obtenu à partir de 2,4-dichloro-3-fluoro-aniline par le procédé selon l'invention.
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