Patents by Inventor GUANGXIONG YU

GUANGXIONG YU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10065901
    Abstract: The present invention discloses a method for preparing optically active carbonyl compound, comprising the following steps: under the catalysis of chiral amine salt and transition metal catalysts, with hydrogen and catalytic amount of dihydropyridine compound as hydrogen source, use ?, ?-unsaturated aldehydes or ?, ?-unsaturated troponoid compounds to conduct asymmetric catalytic reaction to obtain the optically active carbonyl compound. This method comes in moderate reaction condition, simple operation, and catalytic amount of dihydropyridine compounds usage, the target product is easy to be separated and purified from the reaction system, and the metal catalyst can be recycled, it is economical.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: September 4, 2018
    Assignees: ZHEJIANG NHU COMPANY LTD., SHANDONG NHU PHARMACEUTICAL CO., LTD., ZHEJIANG UNIVERSITY
    Inventors: Yougui Zhou, Ming Yu, Jintao Yuan, Lei Zhao, Xiandong Zhu, Guangxiong Yu, Weiwei Su, Weikang Shao, Xingxing Shi, Yin Zhang, Ming Feng, Zhirong Chen, Haoran Li, Yuhong Zhang
  • Publication number: 20180105477
    Abstract: The present invention discloses a method for preparing optically active carbonyl compound, comprising the following steps: under the catalysis of chiral amine salt and transition metal catalysts, with hydrogen and catalytic amount of dihydropyridine compound as hydrogen source, use ?, ?-unsaturated aldehydes or ?, ?-unsaturated troponoid compounds to conduct asymmetric catalytic reaction to obtain the optically active carbonyl compound. This method comes in moderate reaction condition, simple operation, and catalytic amount of dihydropyridine compounds usage, the target product is easy to be separated and purified from the reaction system, and the metal catalyst can be recycled, it is economical.
    Type: Application
    Filed: November 29, 2016
    Publication date: April 19, 2018
    Inventors: YOUGUI ZHOU, MING YU, JINTAO YUAN, LEI ZHAO, XIANDONG ZHU, GUANGXIONG YU, WEIWEI SU, WEIKANG SHAO, XINGXING SHI, YIN ZHANG, MING FENG, ZHIRONG CHEN, HAORAN LI, YUHONG ZHANG