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, 2019
Filed:
Nov. 14, 2016
Applicant:
Fmc Corporation, Philadelphia, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 249/16 (2006.01);
U.S. Cl.
CPC ...
C07C 249/16 (2013.01); C07C 249/16 (2013.01); C07C 251/76 (2013.01);
Abstract
A process for the synthesis of 1,3-diethyl 2-(2-methylhydrazinylidene)propanedioate comprising the step of: reacting 2-halosubstituted diethyl malonate or mixtures of 2-halo-substituted diethyl malonates with methylhydrazine or the salt thereof in the presence of an acid catalyst is disclosed. 1,3-diethyl 2-(2-methylhydrazinylidene)propanedioate is an intermediate useful for preparing 1,3,4-triazines.