Production of dialkylthiophosphates

Details Production of dialkylthiophosphates Production of dialkylthiophosphates

1974-12-13

1976-10-05

Sutto, Anton H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2604299, 260435R, 260987, 2604295, 2604381, C07F 306, C07F 308, C07F 724

Patent

active

039844480

ABSTRACT:
Production of dialkylthiophosphates of the general formula: ##EQU1## IN WHICH R.sub.1 and R.sub.2 stand for identical or different linear and/or branched alkyl radicals having from 1 to 6 carbon atoms, M stands for a metal cation and n stands for the valence of the metal cation concerned, wherein O,O-dialkylphosphites of the general formula: ##EQU2## in which R.sub.1 and R.sub.2 have the meanings given above, are reacted with a compound yielding the metal cation M, in the presence of pulverulent sulfur and organic solvents at elevated temperature, More particularly, high-grade and very pure dialkylthiophosphates are produced by using, as the compound yielding the metal cation M, the oxide of the corresponding mono- to tetravalent metal.

REFERENCES:
patent: 2344394 (1944-03-01), Cook et al.
Houben-Weyl, Muller et al., Band XII/2, (1964) George Thieme Verlag, Stuttgart, p. 602.

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