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:
May. 21, 1996
Filed:
Jun. 01, 1995
Applicant:
Inventors:
Elkana Gurfinkel, Omer, IL;
Yaacov Shmueli, Beer-Sheva, IL;
Assignee:
Makhteshim Chemical Works Ltd., Beer-Sheva, IL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544319 ;
Abstract
Hydroxypyrimidine, a key intermediate in the manufacture of diazinon, is prepared in high yields and high purity by reacting an amidine with methyl-acetoacetate in a dry, i.e. non-aqueous, medium in the presence of a methanolic base in an aliphatic hydrocarbon solvent while azeotropically distilling off water formed during the reaction.