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. 22, 1992
Filed:
Feb. 14, 1991
Applicant:
Inventors:
Giuseppe Messina, Alghero, IT;
Loreno Lorenzoni, Porto Torres, IT;
Paolo Calaresu, Sassari, IT;
Giovanni M Sechi, Ozieri, IT;
Assignee:
Enichem Anic S.p.A., Palermo, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
564151 ; 560 34 ; 560125 ; 560169 ; 562439 ; 562507 ; 562560 ; 564148 ; 564149 ; 564150 ; 544-3 ; 544 54 ; 544 581 ; 544 63 ; 544 88 ; 544164 ; 544224 ; 544322 ; 544382 ; 546244 ; 548195 ; 548214 ; 548215 ; 548240 ; 548356 ; 548300 ; 548557 ; 558422 ; 558423 ; 558431 ; 558445 ;
Abstract
A new process for preparing oxalyl- and oxamyl-hydrazides which comprises contacting oxamide or diacetyloxamide with the corresponding hydrazine derivative of formula