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. 04, 2012
Filed:
Nov. 12, 2009
George Petros Yiannikouros, Florence, SC (US);
Panos Kalaritis, Florence, SC (US);
George Petros Yiannikouros, Florence, SC (US);
Panos Kalaritis, Florence, SC (US);
Irix Pharmaceuticals, Inc., Florence, SC (US);
Abstract
A method of preparing a N-acyl-N,N',N′-alkylenediamine trialkanoic acid ester comprising contacting a cyclic amidine with an ester of a haloalkanoic acid is provided. In some embodiments, the method involves preparing a N-acyl-N,N′,N′-ethylenediamine trialkanoic acid ester by contacting a 2-alkyl imidazoline with the ester of haloalkanoic acid. In some embodiments, the N-acyl-N,N′,N′-alkylenediamine trialkanoic acid ester is a synthetic intermediate in the preparation of a N-acyl-N,N′,N′-alkylenediamine trialkanoic acid or a salt thereof. In some embodiments, the method provides novel N-acyl-N,N′,N′-alkylenediamine trialkanoic acids and/or esters, which can be used, for example, as chelating agents.