Process for manufacturing diazinon

Details Process for manufacturing diazinon Process for manufacturing diazinon

1988-08-30

1990-02-06

Shah, Mukund J.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07F 965

Patent

active

048989428

ABSTRACT:
An improved process for the production of Diazinon substantially free of toxic by-products in high yield and very high purity which involves mixing 2-isopropyl-4-methyl-6-hydroxypyrimidine with solid sodium or potassium hydroxide in a ketone or ether solvent at a temperature of about 50.degree.-60.degree. C. until a homogeneous mixture is formed, adding diethylthiophosphoryl chloride to the homogeneous mixture, keeping the mixture at a temperature of 55.degree.-80.degree. C. until the reaction is complete, and separating the Diazinon formed.

REFERENCES:
patent: 3107245 (1963-10-01), Gaunt et al.
patent: 3107246 (1963-10-01), Ferguson
patent: 3205231 (1965-09-01), Fest
patent: 3367935 (1968-02-01), Curry et al.
patent: 3432503 (1969-03-01), Ferguson
patent: 3792132 (1974-02-01), Bernhart
patent: 4066642 (1978-01-01), Sury et al.
patent: 4323678 (1982-04-01), Schilling
patent: 4326059 (1982-04-01), Gargano et al.

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