Production of dithiophosphoric acid-O,O-diesters

Details Production of dithiophosphoric acid-O,O-diesters Production of dithiophosphoric acid-O,O-diesters

1975-04-29

1977-04-26

Raymond, Richard L.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

260963, C07F 917, C07F 9173, C07F 918, C07F 9177

Patent

active

040201295

ABSTRACT:
Production of pure dithiophosphoric acid O,O-diesters of the general formula ##STR1## in which the radicals R.sub.1 and R.sub.2, being identical or different, each stand for linear and/or branched alkyl, cycloalkyl, alkenyl, alkinyl, aralkyl or aryl radicals having from 1 to 18 carbon atoms, from their salts of the general formula: ##STR2## in which R.sub.1 and R.sub.2, respectively, have the meanings given hereinabove, M stands for a metal or ammonium cation, and n stands for the valency of the particular cation. The compounds are made by dissolving the salts in the quantity of one or more strong acids necessary to ensure reaction with the resultant formation of two separate liquid phases, and separating the two phases from one another.

REFERENCES:
patent: 2710269 (1955-06-01), Higgins et al.
patent: 3671612 (1972-06-01), Roszinski et al.
patent: 3717692 (1973-02-01), Roszinski et al.
Mastin et al., Journal of the American Chemical Society, vol. 67 (1945) pp. 1662 to 1664.

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