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AssigneeZhejiang Zhuji United Chemicals Co., Ltd
InventorsBangchi CHEN, Baochuan GUAN, Qiuju SHENG, Hongwei ZHANG, Xianbo XU, Yonglin ZHANG, Xiaoyan XU, Haiping MU, Zhuoya ZHANG
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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.
A crystal of 2-[(2,4-dichlorophenyl)methyl]-4,4-dimethyl-3-isoxazolidinone compound (Formula I), wherein the crystal is an orthorhombic crystal, with a space group of P21 21 21 and lattice parameters of a=9.2301 (2) Å, b=11.0751 (3) Å, c=12.7554 (3) Å, α=90°, β=90°, and γ=90°;
The method for efficiently preparing the high-purity thermostable crystal of the 2-[(2,4-dichlorophenyl)methyl]-4,4-dimethyl-3-isoxazolidinone compound (Formula I) according to claim 6, wherein content of 2-[(2,4-dichlorophenyl)methyl]-4,4-dimethyl-3-isoxazolidinone compound (Formula I) in the crude product is not less than 80%;
The application according to claim 10, wherein the agrochemical formulations are a water dispersible granule or a suspension concentrate;
The applications according to claim 11, wherein the agrochemical formulation is water dispersible granule, wherein the crops are corn, wheat;
Dependencies are inferred from the claim text.