Work-up of dialkyl phosphorodithioic acid esters
AssigneeStauffer Chemical Company
InventorsStanley B. Mirviss, Claudia H. Elkins, Sandra L. Urquhart
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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.
Claims9
A process for purifying a reaction mixture comprising a phosphorodithioic acid ester of dichloro-para-dioxane prepared by reacting an 0,0-dialkyl phosphorodithioic acid with a dichloro-para-dioxane in the presence of a catalytic amount of a Lewis acid which comprises washing the reaction mixture with an ammonium hydroxide solution.
Dependencies are inferred from the claim text.