VERFAHREN ZUR HERSTELLUNG VON 2-DIALKOXYPHOSPHINYLIMINO-1,3-DITHIETANEN,申请号DE19772726128-传众专利搜索

VERFAHREN ZUR HERSTELLUNG VON 2-DIALKOXYPHOSPHINYLIMINO-1,3-DITHIETANEN

申请公布号：DE2726128(A1)

申请号：DE19772726128

申请日期：1977.06.10

申请公布日期：1977.12.22

申请人：

AMERICAN CYANAMID CO.

发明人：WILLIAM REGER,DAVID;GARBER,MURRAY;WESLEY LONG,DON

分类号：C07F9/24;C07F9/6553

主分类号：C07F9/24

摘要：There is provided a fully integrated process for preparing a 2-dialkoxyphosphinylimino-1,3-dithietane in good overall yields with considerable savings in materials, time and labor involving a plurality of steps comprising the overall reaction of a dialkoxyphosphoryl chloride and an alkali metal- or ammonium thiocyanate to obtain a dialkoxyphosphinyl isothiocyanate, reacting the latter with 1.1 to 1.2 molar equivalents of an alkali mercaptan in the presence of a water and, finally, reacting resultant dialkoxyphosphinyldithiocarbamate with methylene bromide or methylene iodide in the presence or absence of a non-ionic surfactant under controlled pH conditions ranging from 5 to 8 to obtain resultant 2-dialkoxyphosphinylimino-1,3-dithietane. The latter finds utility for the control of root-knot nematode.