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. 30, 1980
Filed:
Jan. 31, 1979
Applicant:
Inventors:
Ulrich Buhler, Schoneck, DE;
Ernst Heinrich, Neu-Isenburg, DE;
Assignee:
Cassella Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
546286 ; 546287 ; 546315 ; 546326 ; 546345 ;
Abstract
The process for the manufacture of a compound of the formula ##STR1## comprising reacting in the presence of a basic nitrogen compound at elevated temperature phosphorus oxychloride with a compound of the formula ##STR2## in the molar ratio of phosphorus oxychloride to hydroxypyridine of 1:1 to 1.3:1 wherein