Process for the preparation of nanoparticulate compositions and compositions obtained therefrom

    公开(公告)号:US20220217974A1

    公开(公告)日:2022-07-14

    申请号:US17708413

    申请日:2022-03-30

    Abstract: The present invention discloses a process for the preparation of an aqueous pesticide dispersion comprising the steps of: a) dissolving a pesticidal active ingredient in a water miscible organic solvent to obtain a pesticide solution; b) mixing the pesticide solution with water in the presence of surface active agents to form aqueous pesticide dispersion. This invention further discloses a method for controlling pests comprising of diluting the aqueous pesticide dispersion of the present invention in water to obtain diluted aqueous pesticide dispersions and applying an effective amount of said diluted dispersion to a site.

    Synthesis of 5-chloro-2-[(3,4,4-trifluoro-3-buten-1-yl)THIO]-thiazole

    公开(公告)号:US11352335B2

    公开(公告)日:2022-06-07

    申请号:US16964047

    申请日:2019-01-22

    Abstract: The present invention provides an improved process for preparing 5-chloro-2-[(3,4,4-trifluoro-3-buten-1-yl)thio]-thiazole comprising reacting 2-[(3,4,4-trifluoro-3-buten-1-yl)thio]-thiazole with N-chlorosuccinimide (NCS) in the presence of water, the improvement comprising performing the step of reacting the compound of formula (II) with NCS in the presence of a reduced amount of water. The present invention provides an improved process for preparing 5-chloro-2-[(3, 4,4-trifluoro-3-buten-1-yl)thio]-thiazole comprising reacting 2-[(3, 4,4-trifluoro-3-buten-1-yl)thio]-thiazole with N-chlorosuccinimide (NCS) in the presence of water, the improvement comprising performing the step of reacting the compound of formula (II) with an excess molar amount of NCS.

    Catalytic system for scalable preparation of indoxacarb

    公开(公告)号:US10961206B2

    公开(公告)日:2021-03-30

    申请号:US16496961

    申请日:2018-03-27

    Abstract: It is an object of the present invention to provide a novel and advantageous process for commercially preparing of indoxacarb which is racemic or enantiomerically enriched at chiral center from its amide precursor using a new catalytic system.
    More particularly, it relates to an efficient method of preparation of indoxacarb which is racemic or enantiomerically enriched at chiral center from methyl-7-chloro-2,5-dihydro-2-[[[(4-tritluoromethoxy)phenyl]amino]carbonyl]-indeno[1,2-e][1,3,4]oxadiazine-4a(3H) carboxylate represented as formula (I) using methoxycarbonylation agent and metal salt of methylsulfinylmethylide in hydrocarbon solvent in the presence of organic base and phase transfer catalyst.

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