19 research outputs found

    3-(6-Benz­yloxy-2,2-dimethyl­perhydro­furo[2,3-d][1,3]dioxolan-5-yl)-5-(4-chloro­phen­yl)-4-nitro-2-phenyl-2,3,4,5-tetra­hydro­isoxazole

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    In the title compound, C29H29ClN2O7, the isoxazole and dioxolane rings adopt envelope conformations, and the furan ring adopts a twisted conformation. The crystal structure is stabilized by inter­molecular C—H⋯π inter­actions between a benz­yloxy methyl­ene H atom and the 4-chloro­phenyl ring of an adjacent mol­ecule, and by weak non-classical inter­molecular C—H⋯O hydrogen bonds. In addition, the crystal structure exhibits a Cl⋯O halogen bond of 3.111 (3) Å, with a nearly linear C—Cl⋯O angle of 160.7 (1)°

    3-(6-Benz­yloxy-2,2-dimethyl­perhydro­furo[2,3-d][1,3]dioxol-5-yl)-5-(4-bromo­phen­yl)-2-phenyl­perhydro­pyrrolo[3,4-d]isoxazole-4,6-dione

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    In the title compound, C31H29BrN2O7, the isoxazolidine ring adopts a twist conformation, while the tetrahydrofuran, dioxolone and pyrrole rings adopt envelope conformations. The structure is stabilized by inter­molecular C—H⋯O hydrogen bonds and C—H⋯π inter­actions

    [1-(3-Nitro­phen­yl)-2,3-dihydro-1H-naphtho[1,2-e][1,3]oxazin-3-ylidine]malonaldehyde

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    The oxazine ring in the title compound, C21H14N2O5, adopts a flattened boat conformation. The nitro­phenyl ring and the naphthalene ring system enclose a dihedral angle of 89.2 (1)°. An intra­molecular hydrogen bond is formed between the NH group and one of the adjacent carbonyl O atoms. In addition, the NH group forms an inter­molecular hydrogen bond to a symmetry equivalent of this carbonyl O atom, connecting the mol­ecules into centrosymmetric dimers. The structure also contains C—H⋯O inter­molecular inter­actions

    Diethyl 2-oxo-3-(2-oxo-2,3-dihydro-1H-indol-3-yl­idene)butane­dioate

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    The title compound, C16H15NO6, crystallizes with two symmetry–independent mol­ecules in the asymmetric unit. The crystal structure is stabilized by inter­molecular C—H⋯O and N—H⋯O hydrogen bonds, and intra­molecular C—H⋯O hydrogen bonds. In addition, the crystal structure exhibits two inter­molecular C—H⋯π inter­actions
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