7-Nitro-5H-1-benzothiopyrano[2,3-b]pyridin-5-one
نویسندگان
چکیده
In the mol-ecule of the title compound, C(12)H(6)N(2)O(3)S, the central heterocyclic ring is oriented at dihedral angles of 3.25 (6) and 2.28 (7)° with respect to the benzene and pyridine rings, respectively. The dihedral angle between the benzene and pyridine rings is 5.53 (7)°. In the crystal structure, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into chains.
منابع مشابه
5H-1-Benzothiopyrano[2,3-b]pyridin-5-one
Mol-ecules of the title compound, C(12)H(7)NOS, with one half-mol-ecule in the asymmetric unit, are disordered about a crystallographic centre of inversion. Refinement showed that the C=O group is disordered with the S atom and the N atom is disordered over four positions. Adjacent mol-ecules are connected through C-H⋯O hydrogen bonds and π⋯π inter-actions (centroid-centroid distances of 3.635 ...
متن کاملN-[(3RS,4SR)-1-Benzyl-4-methylpiperidin-3-yl]-1-(4-methylphenylsulfonyl)-5-nitro-1H-pyrrolo[2,3-b]pyridin-4-amine
The structure of the title compound, C(27)H(29)N(5)O(4)S, displays an intra-molecular N-H⋯O hydrogen bond. The pyrrolo-[2,3-b]pyridine core makes a dihedral angle of 85.5 (4)° with the benzyl residue and a dihedral angle of 89.4 (9)° with the tosyl ring. The nitro group is slightly twisted out of the plane of the planar pyrrolo-pyridine system [(-N-)C-C-N-O torsion angle = -4.61 (18)° and (-NH-...
متن کاملDiethyl 2-{[(5-oxo-5H-thiochromeno[2,3-b]pyridin-7-yl)amino]methylidene}propanedioate
In the title compound, C(15)H(14)O(2)S, the three fused rings are roughly coplanar, the largest deviation from the mean plane being 0.1285 (13) Å for the S atom. An intra-molecular N-H⋯O hydrogen bond generates an S6 ring. In the crystal, inter-molecular C-H⋯O hydrogen bonds form R(2) (2)(14), R(2) (2)(13) and R(3) (2)(17) ring motifs, building a layer parallel to (100).
متن کامل2-(Furan-2-yl)-5-(2-nitrobenzyl)-2,3-dihydro-1,5-benzothiazepin-4(5H)-one
The title compound, C(20)H(16)N(2)O(4)S, was prepared by introduction of a 2-nitro-benzyl group to 2-(furan-2-yl)-2,3-dihydro-1,5-benzothia-zepin-4(5H)-one via an alkaline-catalysed reaction. The thia-zepine ring adopts a twist-boat conformation. The furan ring is oriented at dihedral angles of 56.75 (14) and 10.82 (14)° with respect to the two benzene rings, while the two benzene rings make a ...
متن کامل1-Nitro-2,3-di-2-pyridyl-2,3-dihydroindolizine
The title compound, C(18)H(14)N(4)O(2), was found as a by-product in the nitro-aldol reaction between 2-(nitro-meth-yl)pyridine and N-(pyridin-2-ylmethyl-idene)methane-amine. Its two stereogenic centers give rise to four stereoisomers of which only the anti isomers are found in this crystal structure.
متن کامل