Process for preparing esters of O,O-dialkyl dithiophosphoric aci

Details Process for preparing esters of O,O-dialkyl dithiophosphoric aci Process for preparing esters of O,O-dialkyl dithiophosphoric aci

1980-02-22

1981-08-04

Love, Ethel G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

424278, C07D31910

Patent

active

042821533

ABSTRACT:
Disclosed is a method for improving the yields of insecticidal compositions produced by reacting an O,O-dialkyl dithiophosphoric acid with a chloro-p-dioxane in the presence of a Lewis acid catalyst and a stoichiometric excess of the acid reactant. More specifically, the method concerns the improvement wherein certain bicyclo-heptenes are added to the system resulting from the reaction and reacted with the excess of O,O-dialkyl dithiophosphoric acid present in the system.

REFERENCES:
patent: 2725328 (1955-11-01), Diveley et al.
patent: 2815350 (1957-12-01), Speck
patent: 2864826 (1958-12-01), Diveley

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