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US 4,395,551 AGranted
Pyridopyrimidinone compounds
AssigneeUniroyal, Inc.
InventorsMark A. Dekeyser, Benjamin J. Pierce, Richard C. Moore, Winchester L. Hubbard
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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.
Claims2
A compound of the formula ##STR111## 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.
A compound selected from the group consisting of:
- 3-bromo-2-(chloromethyl)-4H-pyrido[1,2-a]pyrimidin-4-one;
- 6-chloro-2-(chloromethyl)-4H-pyrido[1,2-a]pyrimidin-4-one;
- 3-chloro-2-(chloromethyl)-4H-pyrido[1,2-a]pyrimidin-4-one;
- 3,6-dichloro-2-(chloromethyl)-4H-pyrido[1,2-a]pyrimidin-4-one;
- 2-(chloromethyl)-5-methyl-4H-pyrido[1,2-a]pyrimidin-4-one;
- 2-(chloromethyl)-7-methyl-4H-pyrido[1,2-a]pyrimidin-4-one;
- and
- 3-bromo-6-chloro-2-(chloromethyl)-4H-pyrido[1,2-a]pyrimidin-4-one.
5 more elements
Dependencies are inferred from the claim text.