2-Methyl-4,4-dioxo-N-phenyl-5,6-dihydro-1,4-oxathiine-3-carboxamide (Oxycarboxin)

2-Methyl-4,4-dioxo-N-phenyl-5,6-dihydro-1,4-oxathiine-3-carboxamide (Oxycarboxin)

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In the title compound, C12H13NO4S, 15-eg2373cl a systemic fungicide, the heterocycle adopts a lounge chair conformation and the dihedral angle between the ring planes is 25.8 (2)°.Intermolecular C—H.O hydrogen bonds are noted in the crystal structure.

Also observed is a short interaction of a methylene hydrogen atom with the π-electron system read more of a phenyl ring in an adjacent molecule.