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:
Aug. 18, 2015
Filed:
Jul. 27, 2012
Qilin Zhou, Tianjin, CN;
Shoufei Zhu, Tianjin, CN;
Yanbo Yu, Tianjin, CN;
Kun LI, Tianjin, CN;
Lixin Wang, Tianjin, CN;
Qilin Zhou, Tianjin, CN;
Shoufei Zhu, Tianjin, CN;
Yanbo Yu, Tianjin, CN;
Kun Li, Tianjin, CN;
Lixin Wang, Tianjin, CN;
Zhejiang Jiuzhou Pharmaceutical Co., Ltd., Zhejiang, CN;
Abstract
The present invention relates to a spirobenzylamine-phosphine, preparation method therefor and use thereof. The compound has a structure represented by formula (I), wherein n=0 to 3; R, R, R, R, R, R, R, Rand Rhaving a value as defined in claim. Starting from the substituted 7-trifluoromesyloxy-7'-diarylphosphino-1,1′-spiro-dihydroindene, the compound is synthesized in a two-step or three-step reactions. The new spirobenzylamine-phosphine is complexed with an iridium precursor and is subjected to ion exchange, to give an Iridium/spirobenzylamine-phosphine complex comprising various anions. The spiro benzyl amine-phosphine/Iridium complex according to the present invention may be used for catalyzing asymmetry hydrogenation of a variety of alpha-substituted acrylic acids, has high activity and enantio-selectivity, and has a good prospect of industrialization.