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4-(Prop-2-yn-yl)-2H-1,4-benzo-thia-zin-3(4H)-one
Nada Kheira Sebbar1, Abdelfettah Zerzouf2, El Mokhtar Essassi1
1Laboratoire de Chimie Organique Hétérocyclique URAC 21, Pôle de Compétence Pharmacochimie, Av. Ibn Battouta, BP 1014, Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco.
Abstract:
In the title compound, C11H9NOS, the six-membered heterocycle of the benzo-thia-zine fragment exhibits a screw-boat conformation. The benzene ring makes a dihedral angle of 79.4 (1)° with the mean plane through the prop-2-ynyl chain and the ring N atom. In the crystal, mol-ecules are linked by C-H⋯O inter-actions of the acetyl-enic C-H group towards the carbonyl O atom of a neighbouring mol-ecule, forming zigzag chains running along the b-axis direction.