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. 07, 2024
Filed:
May. 21, 2021
Boehringer Ingelheim International Gmbh, Ingelheim am Rhein, DE;
Bernd Werner, Pfungstadt, DE;
Tobias Alt, Ingelheim am Rhein, DE;
Andrew T. Brusoe, New Milford, CT (US);
Frederic Gerard Buono, Franklin Park, NJ (US);
Michael Klumb, Mainz, DE;
Bjoern Stahl, Ginsheim, DE;
Thomas G. Tampone, Southbury, CT (US);
Boehringer Ingelheim International GmbH, Ingelheim am Rhein, DE;
Abstract
This invention relates to a novel continuous process for making alkyl 7-amino-5-methyl-[1,2,5]-oxadiazolo¬[3,4-b]pyridine-carboxylate, wherein R is C-alkyl. The process of the invention present invention overcomes disadvantages of processes of the prior art by avoiding the highly energetic intermediates, using readily available and inexpensive starting materials and reagents, and avoiding the isolation of intermediates. The process according to the invention is suitable for use on industrial scale.