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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.:

US 11572348 B1

PDFFull Text
Date of Patent:
Feb. 07, 2023

Filed:

Jul. 23, 2020

Syntheses of n-heterocyclic carbenes and intermediates therefor

Applicant:

Umicore Ag & Co. KG, Hanau-Wolfgang, DE;

Inventors:

Steven P. Nolan, Fife, GB;

Sebastien Meiries, Fife, GB;

Assignee:

UMICORE AG & CO. KG, Hanau-Wolfgang, DE;

Attorney:

Moore & Van Allen PLLC

Primary Examiner:

Joseph R Kosack

Assistant Examiner:

Sagar Patel

Int. Cl.
CPC ...
C07D 233/58 (2006.01); C07C 209/70 (2006.01); C07C 211/47 (2006.01); C07C 213/00 (2006.01); C07C 211/45 (2006.01); C07C 209/68 (2006.01); C07C 251/16 (2006.01); C07C 249/02 (2006.01); C07C 215/68 (2006.01); C07F 15/00 (2006.01); C07D 295/096 (2006.01); C07D 295/037 (2006.01); C07D 233/60 (2006.01); C07C 211/46 (2006.01); B01J 31/22 (2006.01); C07C 227/04 (2006.01);
U.S. Cl.
CPC ...
C07D 233/58 (2013.01); C07C 209/68 (2013.01); C07C 209/70 (2013.01); C07C 211/45 (2013.01); C07C 211/46 (2013.01); C07C 211/47 (2013.01); C07C 213/00 (2013.01); C07C 215/68 (2013.01); C07C 251/16 (2013.01); C07D 233/60 (2013.01); C07D 295/037 (2013.01); C07D 295/096 (2013.01); C07F 15/006 (2013.01); B01J 31/2278 (2013.01); B01J 2531/824 (2013.01); C07C 227/04 (2013.01);
Abstract

A method of preparing a 2,6 disubstituted anilines includes, reacting a 2-amino isophthalic acid diester with sufficient Grignard reagent RCHMgX to form the corresponding diol product, dehydrating the diol product to the corresponding dialkene; and hydrogenating the diol product to form the corresponding aniline. The 2,6 disubstituted anilines can be used to produce N-Heterocyclic Carbenes (NHCs). The NHCs can find application in various fields such as organic synthesis, catalysis and macromolecular chemistry. Palladium catalysts containing the NHCs are also described.

Find Patent Forward Citations

Nolan, Steven. (2023). Syntheses of n-heterocyclic carbenes and intermediates therefor (U.S. Patent No. 11572348). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11572348

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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