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US 4,049,652 AGranted
Esters of nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)acetic acid
AssigneeShell Oil Company
InventorSteven A. Roman
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Abstract
Novel insecticidal esters of nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)acetic acid.
Claims2
A resonance hybrid in which the significant forms are represented by the formulae ##STR4## and the enol form represented by the formula ##STR5## wherein X represents the moiety ##STR6## wherein R represents hydrogen, middle halogen, cyano, nitro or alkyl of from one to three carbon atoms.
Dependencies are inferred from the claim text.