Patents by Inventor Junjin ZHOU

Junjin ZHOU 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).

  • Intermediate of preparing high-purity sulfonamide compound
    Patent number: 10221128
    Abstract: The present invention discloses a sulfonamide compound (III) which is intermediately produced in a process for preparing a high-purity sulfonamide compound (I). The preparation comprises the following steps: a, taking a crude product of a sulfonamide compound (I) as an initial raw material, and enabling the raw material to react with a compound of a formula (II) in presence of alkali and a catalyst so as to synthesize an intermediate of a formula (III); and b, enabling the compound represented by the formula (III) to react with alkali or acid, thereby obtaining the high-purity sulfonamide compound (I).
    Type: Grant
    Filed: March 18, 2018
    Date of Patent: March 5, 2019
    Assignee: ORIENTAL (LUZHOU) AGROCHEMICALS. CO., LTD.
    Inventors: Xiaomin Liang, Hao Jiang, Haige Teng, Jinzhi Yang, Junjin Zhou, Jinlong Zhang, Bangchi Chen
  • INTERMEDIATE OF PREPARING HIGH-PURITY SULFONAMIDE COMPOUND
    Publication number: 20180201574
    Abstract: The present invention discloses a sulfonamide compound (III) which is intermediately produced in a process for preparing a high-purity sulfonamide compound (I). The preparation comprises the following steps: a, taking a crude product of a sulfonamide compound (I) as an initial raw material, and enabling the raw material to react with a compound of a formula (II) in presence of alkali and a catalyst so as to synthesize an intermediate of a formula (III); and b, enabling the compound represented by the formula (III) to react with alkali or acid, thereby obtaining the high-purity sulfonamide compound (I).
    Type: Application
    Filed: March 18, 2018
    Publication date: July 19, 2018
    Inventors: Xiaomin LIANG, Hao JIANG, Haige TENG, Jinzhi YANG, Junjin ZHOU, Jinlong ZHANG, Bangchi CHEN
  • Method for preparing high-purity sulfonamide compound, and intermediate of sulfonamide compound
    Patent number: 9950997
    Abstract: The present invention discloses a method for preparing a high-purity sulfonamide compound and an intermediate of the sulfonamide compound. The method comprises the following steps: a, taking a crude product of a sulfonamide compound (I) as an initial raw material, and enabling the raw material to react with a compound of a formula (II) in presence of alkali and a catalyst so as to synthesize an intermediate of a formula (III); and b, enabling the compound represented by the formula (III) to react with alkali or acid, thereby obtaining the high-purity sulfonamide compound (I).
    Type: Grant
    Filed: September 10, 2017
    Date of Patent: April 24, 2018
    Inventors: Xiaomin Liang, Hao Jiang, Haige Teng, Jinzhi Yang, Junjin Zhou, Jinlong Zhang, Bangchi Chen
  • METHOD FOR PREPARING HIGH-PURITY SULFONAMIDE COMPOUND, AND INTERMEDIATE OF SULFONAMIDE COMPOUND
    Publication number: 20170369429
    Abstract: The present invention discloses a method for preparing a high-purity sulfonamide compound and an intermediate of the sulfonamide compound. The method comprises the following steps: a, taking a crude product of a sulfonamide compound (I) as an initial raw material, and enabling the raw material to react with a compound of a formula (II) in presence of alkali and a catalyst so as to synthesize an intermediate of a formula (III); and b, enabling the compound represented by the formula (III) to react with alkali or acid, thereby obtaining the high-purity sulfonamide compound (I).
    Type: Application
    Filed: September 10, 2017
    Publication date: December 28, 2017
    Inventors: Xiaomin LIANG, Hao JIANG, Haige TENG, Jinzhi YANG, Junjin ZHOU, Jinlong ZHANG, Bangchi CHEN