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:
Jul. 13, 2010
Filed:
Dec. 29, 2006
Wanbin Zhang, Shanghai, CN;
Yongjian Zhang, Shanghai, CN;
Feijun Wang, Shanghai, CN;
Shanghai Jiaotong University, Shanghai, CN;
Abstract
The present invention relates to a 5,5'-position linked 1,1′-biphenyl axis chiral ligand in chemical industry field. The present invention incorporates both the central chirality of oxazoline and the axial chirality of diphenyls. Such ligand can be used in various asymmetric reactions catalyzed by metal with high reactivity and stereoselectivity, and thus represents a good application outlook. The ligand of the present invention has the formula of: wherein: n=5, 6, 7, 8, 9, 10, 11 or 12; R=hydrogen, alkyl, substituted or unsubstituted aryl, substituted or unsubstituted benzyl; R=hydrogen, alkyl, substituted or unsubstituted aryl, substituted or unsubstituted benzyl; R=hydrogen, alkyl, substituted or unsubstituted aryl, substituted or unsubstituted benzyl; R=hydrogen, alkyl, substituted or unsubstituted aryl, substituted or unsubstituted benzyl.