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. 31, 2022
Filed:
Nov. 15, 2018
Applicant:
Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, CN;
Inventors:
Shiliang Shi, Shanghai, CN;
Yuan Cai, Shanghai, CN;
Xintuo Yang, Shanghai, CN;
Feng Li, Shanghai, CN;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 233/60 (2006.01); B01J 31/22 (2006.01); C07D 233/58 (2006.01); C07D 235/02 (2006.01); C07D 239/06 (2006.01); C07F 5/04 (2006.01);
U.S. Cl.
CPC ...
C07D 233/60 (2013.01); B01J 31/2295 (2013.01); C07D 233/58 (2013.01); C07D 235/02 (2013.01); C07D 239/06 (2013.01); C07F 5/04 (2013.01); C07B 2200/13 (2013.01);
Abstract
Chiral 1, 3-diarylimidazole salt carbene precursors, their methods of preparation, particularly transition metal complexes and their use in chemical synthesis are provided. In particular, an air and moisture stable chiral 1, 3-diarylimidazole carbene precursor Cu (I) complex has been prepared and applied to highly regio- and enantioselective Markovnikov hydroboration of unactivated terminal alkenes to form chiral boronic esters. Moreover, these new chiral NHCs can be potentially applied in various metal-catalyzed asymmetric transformations.