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:
Jul. 16, 2013
Filed:
Oct. 09, 2008
Andreas Meudt, Hofheim, DE;
Richard Wisdom, Eppstein, DE;
Jason Helmke, Rogersville, MO (US);
Quofang Qiu, Springfield, MO (US);
Paul Meek, Republic, MO (US);
Andreas Meudt, Hofheim, DE;
Richard Wisdom, Eppstein, DE;
Jason Helmke, Rogersville, MO (US);
Quofang Qiu, Springfield, MO (US);
Paul Meek, Republic, MO (US);
Archimica, Inc., Springfield, MO (US);
Abstract
The invention relates to processes for preparing acylated amphetamine, methamphetamine and dexamphetamine derivatives by reacting the parent amine with the to be-coupled acid or a salt of the to-be coupled acid which acid is optionally protected, in the presence of an alkylphosphonic acid anhydride as coupling agent and, if the acid was protected then cleaving the protecting group(s), in a one-pot reaction or in two or more separate steps.