Process for the preparation of the 2-diethoxyphosphinylimino-1,3

Details Process for the preparation of the 2-diethoxyphosphinylimino-1,3 Process for the preparation of the 2-diethoxyphosphinylimino-1,3

1976-06-14

1978-01-24

Jaisle, Cecilia M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D33900

Patent

active

040703720

ABSTRACT:
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:acetone mixture (1:9 to 1:3), and finally reacting resultant dialkoxyphosphinyldithiocarbamate with methylene bromide or methylene iodide to obtain a 2-dialkoxyphosphylimino-1,3-dithietane.

REFERENCES:
patent: 3470207 (1969-09-01), Addor
Houben-Weyl, Methoden der Organischen Chemie, vol. 12/2, pp. 587-588, 795-796.

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