Process for manufacturing diazinon
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United States of America Patent
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Feb 6, 1990
Issued Date -
N/A
app pub date -
Aug 30, 1988
filing date -
Oct 14, 1985
priority date (Note) -
Expired
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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.
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