Pyridopyrimidinone compounds
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United States of America Patent
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Jul 26, 1983
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N/A
app pub date -
Dec 10, 1981
filing date -
Dec 10, 1981
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Expired
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Abstract
A compound of the formula ##STR1## wherein R and R.sup.1 together form a 1,3-butadien-1,4-diyl group optionally substituted with a methyl or chloro group and R.sup.2 is halogen is disclosed. The compound is useful as an intermediate in the synthesis of insecticidal organophosphorus compounds.
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