Work-up of dialkyl phosphorodithioic acid esters

Details Work-up of dialkyl phosphorodithioic acid esters Work-up of dialkyl phosphorodithioic acid esters

1986-11-24

1988-11-22

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07F 9165

Patent

active

047867400

ABSTRACT:
A process for purifying a reaction mixture comprising a phosphorodithioic acid ester of dichloro-para-dioxane prepared by reacting an O,O-dialkyl phosphorodithioic acid with a dichloro-para-dioxane in the presence of a catalytic amount of a Lewis acid. This process comprises washing the reaction mixture with an ammonium hydroxide solution, and preferably with an ammonium hydroxide solution containing ammonium chloride.

REFERENCES:
patent: 2725328 (1955-11-01), Diveley et al.
patent: 2815350 (1957-12-01), Speck
patent: 2864826 (1958-12-01), Diveley et al.
patent: 2955116 (1960-10-01), Diveley et al.
patent: 4282153 (1981-08-01), Minn
patent: 4283335 (1981-08-01), Minn
patent: 4283338 (1981-08-01), Minn
Diveley et al., J. Am. Chem. Soc., vol. 81 (1959) pp. 139-144.

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