title: (2Z)-2-Benzyl-idene-4-(prop-2-yn-1-yl)-2H-1,4-benzo-thia-zin-3(4H)-one.
abstract: The mol-ecule of the title compound, C18H13NOS, is build up from two fused six-membered rings, with the heterocyclic component linked to a benzyl-idene group and to a prop-2-yn-1-yl chain. The six-membered heterocycle adopts a distorted screw-boat conformation. The prop-2-yn-1-yl chain is almost perpendicular to the mean plane through benzo-thia-zine as indicated by the C-N-C-C torsion angle of 86.5 (2)°. The dihedral angle between the benzene rings is 47.53 (12)°. There are no specific inter-molecular inter-actions in the crystal packing.
authors.affiliation: Laboratoire de Chimie Organique Hétérocyclique URAC 21, Pôle de Compétence Pharmacochimie, Av. Ibn Battouta, BP 1014, Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco.
authors.forename: Nada Kheira
authors.initials: NK
authors.lastname: Sebbar
authors.affiliation: Laboratoire de Chimie Organique et Etudes Physicochimiques, ENS Takaddoum, Rabat, Morocco.
authors.forename: Abdelfettah
authors.initials: A
authors.lastname: Zerzouf
authors.affiliation: Laboratoire de Chimie Organique Hétérocyclique URAC 21, Pôle de Compétence Pharmacochimie, Av. Ibn Battouta, BP 1014, Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco.
authors.forename: El Mokhtar
authors.initials: el M
authors.lastname: Essassi
authors.affiliation: Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V-Agdal, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Saadi
authors.affiliation: Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V-Agdal, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.
authors.forename: Lahcen
authors.initials: L
authors.lastname: El Ammari