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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 12497424 B1

PDFFull Text
Date of Patent:
Dec. 16, 2025

Filed:

Nov. 09, 2022

Chiral multidentate ligand, and application thereof in asymmetric hydrogenation

Applicant:

Shenzhen Catalys Technology Co., Ltd, Shenzhen, CN;

Inventors:

Qiwei Lang, Shenzhen, CN;

Xiaobing Ding, Shenzhen, CN;

Yang Xiao, Shenzhen, CN;

Assignee:

SHENZHEN CATALYS TECHNOLOGY CO., LTD, Guangdong, CN;

Attorneys:

Ming Jiang

OPENPTO US LLC

Primary Examiner:

Nizal S Chandrakumar

Int. Cl.
CPC ...
C07F 17/02 (2006.01); B01J 31/22 (2006.01); C07C 29/145 (2006.01); C07C 37/00 (2006.01); C07C 41/18 (2006.01); C07C 237/08 (2006.01); C07D 213/30 (2006.01); C07D 333/16 (2006.01);
U.S. Cl.
CPC ...
C07F 17/02 (2013.01); B01J 31/2295 (2013.01); C07C 29/145 (2013.01); C07C 37/002 (2013.01); C07C 41/18 (2013.01); C07C 237/08 (2013.01); C07D 213/30 (2013.01); C07D 333/16 (2013.01);
Abstract

Disclosed are a chiral multidentate ligand (I), a preparation, and an application thereof. In this method, compound (M1) is subjected to condensation with compound (M2) followed by amine deprotection in the presence of a deprotection reagent to obtain compound (M4). Compound (1) is subjected to deprotonation by butyl lithium and phosphorization followed by dimethylamino group substitution to produce compound (3). The compound (3) and the compound (M4) are reacted in the presence of triethylamine to produce chiral multidentate ligands.

Find Patent Forward Citations

Lang, Qiwei. (2025). Chiral multidentate ligand, and application thereof in asymmetric hydrogenation (U.S. Patent No. 12497424). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12497424

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

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