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:
Nov. 24, 2015
Filed:
Aug. 16, 2011
Applicants:
Nikolaus Bieler, Brig-Glis, CH;
Stefan Ellinger, Visp, CH;
Martina Furrer, Visp, CH;
Viktor Ladnak, Thun, CH;
Constanze Müller, Naters, CH;
Leo Schmid, Glis, CH;
Cornelia Zur Täschler, Visp, CH;
Inventors:
Nikolaus Bieler, Brig-Glis, CH;
Stefan Ellinger, Visp, CH;
Martina Furrer, Visp, CH;
Viktor Ladnak, Thun, CH;
Constanze Müller, Naters, CH;
Leo Schmid, Glis, CH;
Cornelia Zur Täschler, Visp, CH;
Assignee:
LONZA LTD., Basel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 209/00 (2006.01); C07C 209/74 (2006.01);
U.S. Cl.
CPC ...
C07C 209/74 (2013.01); C07C 209/74 (2013.01); C07C 211/52 (2013.01);
Abstract
A process for the chlorination of alkylanilines is provided allowing a highly selective chlorination in the meta-position of the aromatic ring. This is achieved by reacting a mixture comprising the alkylaniline and sulfuric acid with chlorine. This process allows a meta-chlorination with a selectivity of more than 90%.