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US 4,045,434 AGranted
Esters of nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)acetic acids
AssigneeShell Oil Company
InventorSteven A. Roman
Life of this patent
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Abstract
Novel insecticidal esters of nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)acetic acids.
Claims3
A resonance hybrid in which the significant forms are represented by the formulae ##STR3## and the enol form represented by the formula ##STR4## wherein R represents the moiety
- --CH.sub.2 --CH=CH.sub.n --phenyl,
- n being one or two, and "phenyl" being the unsubstituted phenyl moiety or such substituted by from one to three of alkyl of from one to three carbon atoms, middle halogen or nitro.
Dependencies are inferred from the claim text.