Patent · US Expired

Process for the preparation of 2-halogeno-4,5-difluorobenzoyl fluorides

US5859298A · kind A · utility

0Cited by

3References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Stefan Antons · Leverkusen, DE
Albrecht Marhold · Leverkusen, DE
Bernhard Beitzke · Bensberg, DE

Key dates

Filing date	Feb 13, 1997
Grant date	Jan 12, 1999
Priority date	—
Expiry date	Feb 13, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C51/62
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

2-Halogeno-4,5-difluoro-benzoyl fluorides are obtained in high yields by reacting 2,4-dichloro-5-fluoro-benzoyl halides with potassium fluoride in an aprotic solvent. The 2-halogeno-4,5-difluoro-benzoyl fluorides prepared in this way are particularly suitable as intermediates for the preparation of antibacterial active substances.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.