The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2019
Filed:
Mar. 18, 2018
Oriental (Luzhou) Agrochemicals. Co., Ltd., Sichuan, CN;
Xiaomin Liang, Hangzhou, CN;
Hao Jiang, Zhejiang, CN;
Haige Teng, Zhejiang, CN;
Jinzhi Yang, Zhejiang, CN;
Junjin Zhou, Zhejiang, CN;
Jinlong Zhang, Zhejiang, CN;
Bangchi Chen, Zhejiang, CN;
ORIENTAL (LUZHOU) AGROCHEMICALS. CO., LTD., Sichuan, CN;
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).