The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 2022
Filed:
Nov. 25, 2019
Basf SE, Ludwigshafen, DE;
Karsten Koerber, Ludwigshafen, DE;
Michael Rack, Ludwigshafen, DE;
Pascal Bindschaedler, Winterthur, CH;
Martin John McLaughlin, Ludwigshafen, DE;
Birgit Gockel, Ludwigshafen, DE;
Devendra Vyas, Research Triangle Park, NC (US);
Sebastian Soergel, Limburgerhof, DE;
BASF SE, Ludwigshafen, DE;
Abstract
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.