Methyl 4-hydroxy-2-methoxycarbonylmethyl-1,1-dioxo-1,2-dihydro-1λ6,2-benzothiazine-3-carboxylate1
نویسندگان
چکیده
There are two independent mol-ecules in the asymmetric unit of the title compound, C(13)H(13)NO(7)S, which have almost identical geometries. The thia-zine ring adopts a sofa conformation in both mol-ecules and the mol-ecular conformations are stabilized by intramolecular O-H⋯O hydrogen bonds. Inter-molecular C-H⋯O hydrogen bonds stabilize the crystal packing.
منابع مشابه
Methyl 2-(but-3-enyl)-4-hydroxy-1,1-dioxo-2H-1λ6,2-benzothiazine-3-carboxylate
In the title compound, C(14)H(15)NO(5)S, the thia-zine ring adopts a sofa conformation and an intra-molecular O-H⋯O hydrogen bond forms an S(6) ring. In the crystal, molecules are linked viaC-H⋯O inter-actions.
متن کامل4-Hydroxy-2-methyl-1,1-dioxo-N-phenyl-2H-1λ6,2-benzothiazine-3-carboxamide
In the title mol-ecule, C(16)H(14)N(2)O(4)S, the thia-zine ring adopts a twist chair conformation with the N and adjacent C atom displaced by 0.966 (3) and 0.386 (4) Å, respectively, on the same side of the mean plane formed by the remaining ring atoms. The dihedral angle between the mean planes of the benzene rings is 37.65 (10)°. The mol-ecular structure features an intra-molecular O-H⋯O hydr...
متن کامل4-Hydroxy-2-methyl-1,1-dioxo-2H-1λ6,2- benzothiazine-3-carboxylic acid hemihydrate
In the title compound, C(10)H(9)NO(5)S·0.5H(2)O, two geometrically different organic mol-ecules are present. The benzene rings and the carboxyl-ate groups are oriented at dihedral angles of 13.44 (4) and 21.15 (18)°. In both mol-ecules, an intra-molecular O-H⋯O hydrogen bond generates an S(6) ring. In the crystal, both moleucles form inversion dimers linked by pairs of O-H⋯O hydrogen bonds to g...
متن کاملMethyl 4-hydroxy-1,1-dioxo-2-(2-phenylethyl)-2H-1λ6,2-benzothiazine-3-carboxylate
In the title compound, C(18)H(17)NO(5)S, the thia-zine ring adopts a half-chair conformation and the dihedral angle between the aromatic rings is 79.41 (6)°. An intra-molecular O-H⋯O hydrogen bond generates an S(6) ring. In the crystal, mol-ecules are linked by weak C-H⋯O inter-actions resulting in infinite sheets along the b and c axes.
متن کاملN′-[(E)-1-(4-Bromophenyl)ethylidene]-4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carbohydrazide
The six-membered heterocycle in the title compound, C(18)H(16)BrN(3)O(4)S, adopts a sofa conformation. Intra-molecular N-H⋯N and O-H⋯O hydrogen bonds stabilize the mol-ecular conformation by forming a five- and a six-membered ring, respectively. The crystal packing is stabilized by inter-molecular C-H⋯O hydrogen bonds.
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عنوان ژورنال:
دوره 67 شماره
صفحات -
تاریخ انتشار 2011