NEW CRYSTAL FORM OF ISOXAZOLINE URACIL COMPOUND, PREPARATION METHOD, AND HERBICIDE AND USE

Abstract

A new crystal form of an isoxazoline uracil compound represented by formula (1), a preparation method, and an herbicide containing the new crystal form of an isoxazoline uracil compound and the use thereof. An X-ray powder diffraction pattern of the new crystal form has characteristic peaks at diffraction angles 2θ of 6.3±0.2, 7.2±0.2, 11.2±0.2, 14.3±0.2, 17.3±0.2, 19.6±0.2, 20.7±0.2, 24.3±0.2, 25.2±0.2, and 26.1±0.2. The new crystal form solves the problems of pipeline blockage during production, difficulty in acquiring materials, inaccurate metering, and difficulty in storage and sub-packaging caused by oily isoxazoline uracil compounds in the prior art. In formula (1), R1 is fluorine, R2 is chlorine, R3 and R4 are hydrogen, R5 is CO2C2H5, and R6 is methyl.

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