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:
Feb. 01, 2011
Filed:
Dec. 17, 2004
Henri Delalu, Lyons, FR;
Cécile Colas-duriche, Talence, FR;
Jacques Berthet, Lyons, FR;
Philippe Leurent, Toulouse, FR;
Henri Delalu, Lyons, FR;
Cécile Colas-Duriche, Talence, FR;
Jacques Berthet, Lyons, FR;
Philippe Leurent, Toulouse, FR;
Isochem, Paris, FR;
Centre National de la Recherche Scientifique (CNRS), Paris, FR;
Universite Claude Bernard Lyon, 1, Villeurbanne, FR;
Abstract
The invention relates to a method for the synthesis of exocyclic derivatives of cycloalkyl-hydrazines and exocyclic derivatives of heterocycloalkyl-hydrazines The invention is characterised in that the method comprises a step consisting in demixing a solution containing said synthesised derivative, by reacting a heterocyclic amine with monochloramine, in an organic phase and an aqueous phase with the addition of anhydrous sodium hydroxide. According to the invention, the starting amine which has not reacted is collected and reused directly without any additional treatment. The inventive method can also be used to obtain the corresponding exocyclic heterocycloalkyl-hydrazine or cycloalkyl-hydrazinederivative derivative at a low cost compared to that of other known methods.