High-purity thermostable crystal form of substituted 3-isoxazolidinone compound, preparation method therefor and application thereof

US12162843B2 · kind B2 · utility

Assignee

• ZHEJIANG ZHUJI UNITED CHEMICALS CO., LTD. · CN

Inventors

• Bangchi Chen · Hangzhou City, CN
• Baochuan Guan · Zhejiang, CN
• Qiuju Sheng · Zhejiang, CN
• Hongwei Zhang · Tianjin, CN
• Xianbo XU · Zhejiang, CN
• Yonglin Zhang · Dizhai, CN
• Xiaoyan Xu · Jingu, CN
• Haiping MU · Zhejiang, CN
• Zhuoya Zhang · Zhejiang, CN

Key dates

• Filing date: Nov 12, 2021
• Grant date: Dec 10, 2024
• Expiry date: May 13, 2043

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07B2200/13
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The application provides a high-purity thermostable crystal form of a substituted 3-isoxazolidinone compound, a preparation method therefor and an application thereof. The High-purity thermostable crystal form is prepared by a particular method of the present technology and is determined by single-crystal X-ray diffraction as an orthorhombic crystal, featuring a space group of P212121 and lattice parameters of a=9.2301(2) Å, b=11.0751(3) Å, c=12.7554(3) A, α=90°, β=90°, and γ=90°. The orthorhombic crystal can be conveniently applied in preparation of agrochemical formulations, such as a suspension concentrate and a water dispersible granule, and the new formulations prepared have a better herbicidal activity and crop safety.