ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,545,651, issued on Feb. 10, was assigned to ZHEJIANG UNIVERSITY OF TECHNOLOGY (Zhejiang, China).
"Diphenylamine-linked chiral bis(oxazoline) ligand without C 2 -symmetry, synthesis method and application thereof" was invented by Danqian Xu (Zhejiang, China), Yifeng Wang (Zhejiang, China), Biao Wang (Zhejiang, China) and Zhenyuan Xu (Zhejiang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a diphenylamine-linked chiral bis(oxazoline) ligand without C2-symmetry of formula 3 and its synthesis method and application in an asymmetric catalytic reaction, wherein C2-symmetry is lost by introducing different groups into the...