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. 14, 2010
Filed:
Mar. 20, 2007
Applicants:
Ute Emmel, Frankfurt am Main, DE;
Wilfried Weiss, Oberursel, DE;
Ulrich Wietelmann, Friedrichsdorf, DE;
Dirk Dawidowski, Frankfurt, DE;
Inventors:
Ute Emmel, Frankfurt am Main, DE;
Wilfried Weiss, Oberursel, DE;
Ulrich Wietelmann, Friedrichsdorf, DE;
Dirk Dawidowski, Frankfurt, DE;
Assignee:
Chemetall GmbH, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process is described for preparing aryllithium compounds by reaction of metallic lithium in an ether-containing solvent with an aryl halide, wherein prior to or at the beginning of the reaction a catalyst is added, the catalyst containing a halogen-free, polynuclear aromatic (aryl catalyst) or consisting of such a compound.