Preparation of O-alkyl, S,S-dialkylphosphorodithioates
    1.
    发明授权
    Preparation of O-alkyl, S,S-dialkylphosphorodithioates 失效
    O-烷基,S,S-二烷基二硫代磷酸酯的制备

    公开(公告)号:US4950784A

    公开(公告)日:1990-08-21

    申请号:US77239

    申请日:1987-07-24

    IPC分类号: C07F9/17

    CPC分类号: C07F9/17

    摘要: The O-alkyl S,S-dialkylphosphorodithioates, e.g., ethoprophos, are facilely prepared, in improved yields and having great purity, by reacting an alkylphosphate dihalogenide, e.g., a dichloride, with a 1.5 to 8 mol excess of a thiol, in the presence of a 0.1 to 5 mol excess of an acid acceptor, with both molar excesses being per mole of said dihalogenide.

    摘要翻译: O-烷基S,S二烷基二硫代磷酸酯,例如鸟嘌呤,通过使二卤化烷基磷酸酯与1.5至8摩尔过量的硫醇反应,以提高产率和高纯度方便地制备, 存在0.1至5摩尔过量的酸受体,两摩尔过量是每摩尔所述二卤化物。

    Process for preparing O-alkyl S-(alpha-branched alkyl)
alkylphosphonothioate
    2.
    发明授权
    Process for preparing O-alkyl S-(alpha-branched alkyl) alkylphosphonothioate 失效
    制备O-烷基S-(α-支链烷基)烷基硫代磷酸酯的方法

    公开(公告)号:US4720565A

    公开(公告)日:1988-01-19

    申请号:US770214

    申请日:1985-08-28

    IPC分类号: C07F9/38 A01N57/02 C07F9/40

    CPC分类号: C07F9/4075

    摘要: Process for preparing an O-alkyl S-(alpha-branched alkyl) alkylphosphonothioate of formula: ##STR1## with R and R.sub.1 =alkyl having 1 to 8 C. R.sub.2 =alpha-branched alkyl having 3 to 8 C.It consists in reacting an O-(alkyl)alkylphosphonic acid halide with an alkyl mercaptan HSR.sub.2 in an organic medium, in the presence of an acceptor for acid and a smaller amount of an auxiliary base.Process useful for preparing insecticidal and nematocidal products.

    摘要翻译: 制备下式的化合物的O-烷基S-(α-支链烷基)烷基硫代磷酸酯的方法:其中R和R 1 =具有1至8个碳原子的烷基。R2 =具有3至8个碳原子的α-支链烷基。它包括使 在有机介质中的烷基硫醇HSR2的O-(烷基)烷基膦酰卤,在酸的受体和较少量的辅助碱的存在下。 用于制备杀虫和杀线虫产品的方法。