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Methyl 4-hy-droxy-2-meth-oxy-carbonyl-methyl-1,1-dioxo-1,2-dihydro-1λ,2-benzothia-zine-3-carboxyl-ate.

ABSTRACT: 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.

SUBMITTER: Arshad MN

PROVIDER: S-EPMC3200958 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Methyl 4-hy-droxy-1,1-dioxo-2-(2-phenyl-eth-yl)-2H-1λ,2-benzothia-zine-3-carboxyl-ate.

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Project description: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.

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Methyl 4-hydr-oxy-2H-1,2-benzothia-zine-3-carboxyl-ate 1,1-dioxide.

Project description:The asymmetric unit of the title compound, C(10)H(9)NO(5)S, contains two independent mol-ecules. The heterocyclic thia-zine rings in both mol-ecules adopt half-chair conformations, with the S atoms in each mol-ecule displaced by 0.455?(3) and 0.539?(3)?Å and the N atoms displaced in the opposite direction by 0.214?(3) and 0.203?(3)?Å, from the planes defined by the remaining ring atoms. The crystal structure is stabilized by O-H?O, N-H?O and C-H?O hydrogen bonds involving both inter- and intra-molecular inter-actions.

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