Patents by Inventor Shangcheng XU

Shangcheng XU 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).

  • Method for preparing 1-(4-chlorophenyl)-2-cyclopropyl-1-propanone and intermediate thereof
    Patent number: 9227900
    Abstract: A method is for preparing 1-(4-chlorophenyl)-2-cyclopropyl-1-propanone and an intermediate thereof, where in the method for preparing a compound of formula (I), ?-alkoxy p-chlorobenzyl phosphonate (II) and cyclopropyl methyl ketone are used as raw materials, and subjected to a Homer-Wadsworth-Emmons reaction in an organic solvent in the presence of a base, so as to prepare a derivative of alkoxy propylene with the structure of formula (III); and the resulting derivative of alkoxy propylene (III) is hydrolyzed under acidic conditions to obtain 1-(4-chlorophenyl)-2-cyclopropyl-1-propanone (I).
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: January 5, 2016
    Assignee: Jiangsu Chengyang Crop Science Co., Ltd.
    Inventors: Minghua Xu, Shangcheng Xu, Xiaojun Wang, Chuanhui Yu, Qin Wan, Jiabin Hu
  • METHOD FOR PREPARING 1-(4-CHLOROPHENYL)-2-CYCLOPROPYL-1-PROPANONE AND INTERMEDIATE THEREOF
    Publication number: 20150299078
    Abstract: A method is for preparing 1-(4-chlorophenyl)-2-cyclopropyl-1-propanone and an intermediate thereof, where in the method for preparing a compound of formula (I), ?-alkoxy p-chlorobenzyl phosphonate (II) and cyclopropyl methyl ketone are used as raw materials, and subjected to a Homer-Wadsworth-Emmons reaction in an organic solvent in the presence of a base, so as to prepare a derivative of alkoxy propylene with the structure of formula (III); and the resulting derivative of alkoxy propylene (III) is hydrolyzed under acidic conditions to obtain 1-(4-chlorophenyl)-2-cyclopropyl-1-propanone (I).
    Type: Application
    Filed: November 18, 2013
    Publication date: October 22, 2015
    Applicant: JIANGSU CHENGYANG CROP SCIENCE CO., LTD.
    Inventors: Minghua XU, Shangcheng XU, Xiaojun WANG, Chuanhui YU, Qin WAN, Jiabin HU