Patents by Inventor Yizu Wu

Yizu Wu 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).

  • Process for preparing 2-alkyl-3-halo-6-nitrilpyridine and its carboxylic acid and ester derivatives
    Publication number: 20100305330
    Abstract: A process for preparing 2-alkyl-3-halo-6-nitrilpyridine and its carboxylic acid and ester derivatives by reacting 2-alkyl-3-halo-pyridine N-oxide with dimethyl sulfate, followed by reacting the adduct with alkaline cyanide to obtain the target molecule is disclosed. Further treatment of the nitrile with base to obtain the corresponding acid, and esterification are described as well. The process was scaled up to multi-kilogram level that provided satisfactory output.
    Type: Application
    Filed: June 2, 2009
    Publication date: December 2, 2010
    Applicant: Synergetica Changzhou Chemical Company
    Inventors: Heng E. Michael Su, Yizu Wu, Chunming Wu, Haiyan Li, Lee Alan DeWitt