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:
May. 13, 2008
Filed:
Jul. 06, 2005
Applicants:
Axel Pleschke, Köln, DE;
Albrecht Marhold, Leverkusen, DE;
Inventors:
Axel Pleschke, Köln, DE;
Albrecht Marhold, Leverkusen, DE;
Assignee:
LANXESS Deutschland GmbH, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 241/36 (2006.01); C07D 471/00 (2006.01); C07D 487/00 (2006.01); C07C 253/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to an improved process for preparing ring-fluorinated aromatics of the general formula (I) by a halogen exchange reaction (halex reaction) of a plurality of halogen substituents in one stage in the presence of a catalyst.