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:
Aug. 18, 1987
Filed:
Apr. 11, 1986
Applicant:
Inventors:
George W Gokel, Columbia, MD (US);
Vincent J Gatto, Silver Spring, MD (US);
Assignee:
University of Maryland, College Park, MD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
540467 ;
Abstract
A process for the direct preparation of N,N-di-substituted derivatives of 4,13-diaza-18-crown-6 in which the substituents on both nitrogen atoms are identical and derive originally from an amine, by reacting a 1,8-diiodo-3,6-dioxooctane or derivatives thereof in which the substituents are located on positions 1, 2, 4, 5, 7 or 8 or combinations thereof, with a molar equivalent of a primary amine in the presence of a base and solvent.
Gokel, George. (1987). Process for the direct preparation of n,n-disubstituted derivatives for (U.S. Patent No. 4687844). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4687844
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile