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:
Dec. 09, 1997
Filed:
Feb. 03, 1993
Applicant:
Inventors:
James Franklin, Brussels, BE;
Francine Janssens, Vilvoorde, BE;
Assignee:
Reilly Chemicals S.A., Brussels, BE;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546345 ;
Abstract
The invention concerns a process for the preparation of chlorinated derivatives of pyridine compounds by a chlorination reaction of the corresponding pyridine compounds with molecular chlorine, carried out in the gaseous phase by means of bis(trichloromethyl)sulfone as a free radical initiator. The obtained chlorinated derivatives of pyridine compounds, such as 2,6-dichloropyridine, can be used as chemical intermediates.