Process for the manufacture of diazinon

Details Process for the manufacture of diazinon Process for the manufacture of diazinon

1992-03-16

1993-07-27

Shah, Mukund J.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

544319, C07F 96512

Patent

active

052311805

ABSTRACT:
Diazinon is prepared by converting the starting hydroxypyrimidine to its potassium salt by reacting it with potassium carbonate in an organic solvent after removal of the water by azeotropic distillation, and reacting the resulting non-aqueous salt with diethyl thiophosphoryl chloride and recovering the diazinon formed. The solvent used is either MIBK or an aliphatic hydrocarbon desirably containing 1-20% MEK.

REFERENCES:
patent: 2754243 (1956-07-01), Gysin et al.
patent: 4323678 (1982-04-01), Schilling
patent: 4654329 (1987-03-01), Reifschneider
patent: 4898942 (1990-02-01), Ovadia et al.
patent: 5034529 (1991-07-01), Freeman

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