NEW CRYSTAL FORM OF TEMBOTRIONE
    43.
    发明公开

    公开(公告)号:EP3744709A1

    公开(公告)日:2020-12-02

    申请号:EP18925367.7

    申请日:2018-07-16

    摘要: The invention belongs to the field of chemical synthesis and discloses a new crystal form of tembotrione, which is a herbicide, a preparation method thereof, and an application thereof as a preparation for plant protection. The present invention obtains a previously unknown, stable, new crystal form D of tembotrione by a suitable method and overcomes the disadvantages of amorphous tembotrione. The crystal form D has a crystal structure completely different from three crystal forms A, B and C reported in WO08110621A, and thus fills a gap in national patent protection of this technology. Compared with tembotrione in other crystal forms, tembotrione in crystal form D has the advantages of a higher melting point, better chemical stability, lower dissolution rate, reduced solubility, and is thus suitable for long-term storage. The crystal structure is highly suitable for storing a tembotrione compound.