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:
Oct. 30, 2018
Filed:
Apr. 28, 2015
Zhejiang Jiuzhou Pharma Science & Technology Co., Ltd., Hangzhou, CN;
Pucha Yan, Taizhou, CN;
Yuanqiang Li, Taizhou, CN;
Daqing Che, Taizhou, CN;
Xiangdong Zhang, Taizhou, CN;
Kang Chen, Taizhou, CN;
Yongliang Yan, Taizhou, CN;
Other;
Abstract
The present invention relates to the technical field of organic chemistry, specifically an asymmetrical hydrogenation of an ∂-ketonic acid compound, the technical proposal being as shown by the following formula: Wherein Ris a phenyl, a substituted phenyl, a naphthyl a substituted naphthyl, a C-Calkyl or aralkyl, the substitute is a C-Calkyl, a C-Calkoxy, a halogen, the number of the substituents is 1-3. M is a chiral spiro-pyridyl amido phosphine ligand iridium complex having the following structure, Wherein, R is hydrogen, 3-methyl, 4-Bu or 6-methyl