Patents by Inventor Jo-Hsuan Fang

Jo-Hsuan Fang 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 diene ligands, a fabrication method thereof and applications thereof
    Patent number: 8586810
    Abstract: The present invention proposes a chiral diene ligand, a fabrication method thereof and applications thereof. The chiral diene ligand is a bicyclo[2.2.1] diene ligand having structural specificity and high stability, which favors the bicyclo[2.2.1] diene ligand to take part in asymmetric transformations, particularly an asymmetric addition reaction involving a metal catalyst in a basic environment. Most of the products of the reactions implemented by the chiral diene ligands of the present invention have superior optical activity. The method of the present invention comprises a first oxidation step, a saponification step, a second oxidation step, a deprotonation step, and a cross-coupling step. The chiral diene ligand of the present invention is very suitable to be used in the fabrication or synthesis of various chemicals and medical products.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: November 19, 2013
    Assignee: National Taiwan Normal University
    Inventors: Hsyueh-Liang Wu, Chun-Chih Chen, Chia-Chen Liu, Wei-Ting Wei, Jo-Hsuan Fang
  • CHIRAL DIENE LIGANDS, A FABRICATION METHOD THEREOF AND APPLICATIONS THEREOF
    Publication number: 20130096348
    Abstract: The present invention proposes a chiral diene ligand, a fabrication method thereof and applications thereof. The chiral diene ligand is a bicyclo[2.2.1] diene ligand having structural specificity and high stability, which favors the bicyclo[2.2.1] diene ligand to take part in asymmetric transformations, particularly an asymmetric addition reaction involving a metal catalyst in a basic environment. Most of the products of the reactions implemented by the chiral diene ligands of the present invention have superior optical activity. The method of the present invention comprises a first oxidation step, a saponification step, a second oxidation step, a deprotonation step, and a cross-coupling step. The chiral diene ligand of the present invention is very suitable to be used in the fabrication or synthesis of various chemicals and medical products.
    Type: Application
    Filed: September 10, 2012
    Publication date: April 18, 2013
    Inventors: Hsyueh-Liang WU, Chun-Chih Chen, Chia-Chen Liu, Wei-Ting Wei, Jo-Hsuan Fang