US Patent 7220863 Process for preparing 2-aminopyridine derivatives

Patent 7220863 was granted and assigned to Korea Research Institute of Chemical Technology on May, 2007 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

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Korea Research Institute of Chemical Technology

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7220863

Date of Patent

May 22, 2007

Patent Application Number

11209919

Date Filed

August 23, 2005

Patent Primary Examiner

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J. Parsa

Patent abstract

A method for preparing 2-aminopyridine derivatives, which comprises substituting of fluorine for hydrazine moiety and reducing with hydrogen using 3-substituted-2,5,6-trifluoropyridine as a starting material, provides 2-aminopyridine derivatives having a purity over 98% under a mild reaction condition.