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:
Oct. 23, 2012
Filed:
Aug. 17, 2009
Melanie Sajitz, Plettenberg, DE;
Steve Laborda, Hofheim, DE;
Peter Naumann, Taunusstein, DE;
Michael Wessling, Kandern, DE;
Melanie Sajitz, Plettenberg, DE;
Steve Laborda, Hofheim, DE;
Peter Naumann, Taunusstein, DE;
Michael Wessling, Kandern, DE;
Clariant Finance (BVI) Limited, Tortola, VG;
Abstract
The invention relates to a one-pot reaction for the production of 3,7-diaza-bicyclo[3.3.1]nonane compounds, wherein in a first step a dicarboxylic acid ester is reacted with a pyridine aldehyde and a primary amine. The piperidone created in this manner is reacted with formaldehyde and a further primary amine in a second step. It is essential to the invention that both reaction steps are carried out in a one-pot variation in a C-Calcohol as the solvent, and that the reaction water created is removed by means of distillation.