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. 30, 1993
Filed:
Nov. 23, 1992
Applicant:
Inventors:
Andre Escher, Naters, CH;
Felix Previdoli, Brig, CH;
Assignee:
Lonza Ltd., Gampel/Valais, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
544320 ; 544321 ; 544299 ; 544319 ;
Abstract
A process for the production of 2-substituted 4,6-dialkoxypyrimidines starting from a cyanimidate of the general formula: ##STR1## The cyanimidate is cyclized with a hydrogen halide to a halopyrimidine derivative of general formula: ##STR2## The latter is then converted either with a compound of the formula: