Patents by Inventor Liuzhu Gong

Liuzhu Gong 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).

  • Chiral catalyst, process for preparing the same and its use in the oxidate coupling of naphthols
    Patent number: 7151070
    Abstract: The compound of this invention is a useful catalyst for the oxidative coupling of naphthol. Its originality lies in that it is a novel vanadium complex of Schiff's base formed by a chiral amino acid and a formyl biphenol or its derivative. Its axis chirality is induced to form by the chiral amino acid. It has the general formula: where R represents a benzyl, an isopropyl, an isobutyl or a tertiary butyl and the configuration of the amino acid is R or S. The compound can catalyze oxidative coupling of naphthol or its derivative to form binaphthol or its derivatives with a high optical purity.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: December 19, 2006
    Assignee: Chengdu Institute of Organic Chemistry Chinese Academy of Sciences
    Inventors: Liuzhu Gong, Zhibin Luo, Quanzhong Liu, Aiqiao Mi, Yaozhong Jiang
  • Chiral catalyst, process for preparing the same and its use in the oxidate coupling of naphthols
    Publication number: 20050256345
    Abstract: The compound of this invention is a useful catalyst for the oxidative coupling of naphthol. Its originality lies in that it is a novel vanadium complex of Schiff's base formed by a chiral amino acid and a formyl biphenol or its derivative. Its axis chirality is induced to form by the chiral amino acid. It has the general formula: where R represents a benzyl, an isopropyl, an isobutyl or a tertiary butyl and the configuration of the amino acid is R or S. The compound can catalyze oxidative coupling of naphthol or its derivative to form binaphthol or its derivatives with a high optical purity.
    Type: Application
    Filed: February 27, 2003
    Publication date: November 17, 2005
    Applicant: Chengdu Institute of Organic Chemistry Chinese Academy of Sciences
    Inventors: Liuzhu Gong, Zhibin Luo, Quanzhong Liu, Aiqiao Mi, Yaozhong Jiang