Patents by Inventor Waqar AHMED

Waqar AHMED 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: 10730838
    Abstract: Pharmaceutical and chemical intermediates and related chemistry providing a green preparation method for quinoline compounds. N-Substituted arylamine derivatives as raw material react with arylacetylene or arylethylene derivatives for 24 hours at 80° C.-160° C. in the presence of Brønsted acid catalyst and oxidant without solvent, to obtain quinoline compounds. Beneficial characteristics include convenient operation, mild reaction conditions, environmentally friendly property and possibility of realizing industrialization, and provides the quinoline compounds in high yields. The quinoline compounds synthesized by this method can be further functionalized into various compounds which have potential applications in development and research of natural products, functional materials and fine chemicals.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: August 4, 2020
    Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Sheng Zhang, Ming Bao, Waqar Ahmed, Xiaoqiang Yu, Xiujuan Feng
  • Publication number: 20200079737
    Abstract: Pharmaceutical and chemical intermediates and related chemistry providing a green preparation method for quinoline compounds. N-Substituted arylamine derivatives as raw material react with arylacetylene or arylethylene derivatives for 24 hours at 80° C.-160° C. in the presence of Brønsted acid catalyst and oxidant without solvent, to obtain quinoline compounds. Beneficial characteristics include convenient operation, mild reaction conditions, environmentally friendly property and possibility of realizing industrialization, and provides the quinoline compounds in high yields. The quinoline compounds synthesized by this method can be further functionalized into various compounds which have potential applications in development and research of natural products, functional materials and fine chemicals.
    Type: Application
    Filed: June 7, 2018
    Publication date: March 12, 2020
    Inventors: Sheng ZHANG, Ming BAO, Waqar AHMED, Xiaoqiang YU, Xiujuan FENG