PROCESS FOR PREPARATION OF 5-BROMO-1,3-DICHLORO-2-FLUORO-BENZENE
申请人:BASF SE
公开号:US20220017439A1
公开(公告)日:2022-01-20
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 according to the invention.
[EN] PROCESS FOR PREPARATION OF 5-BROMO-1,3-DICHLORO-2-FLUORO-BENZENE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE 5-BROMO-1,3-DICHLORO-2-FLUORO-BENZÈNE
申请人:BASF SE
公开号:WO2020114813A1
公开(公告)日:2020-06-11
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.