Methyl 5,6-dimethoxy-1H-indole-2-carboxylate
نویسندگان
چکیده
The title compound, C(12)H(13)NO(4), was prepared as a precursor to an indole derivative with possible anti-mitotic properties. The mol-ecule is very nearly planar; the maximum deviation of any non-H atom from the mean plane of the indole ring is 0.120 (3) Å for each of two meth-oxy C atoms. The pairs of mol-ecules related by the inversion centre at (0,0,) are connected by two symmetry-equivalent N-H⋯O hydrogen bonds, while the pairs of mol-ecules related by the inversion centre at (0,0,0) exhibit a π-stacking inter-action of the indole rings, with an inter-planar separation of 3.39 (3) Å.
منابع مشابه
Ethyl 2-[(N-methoxy-N-methylcarbamoyl)methyl]-1-(phenylsulfonyl)-1H-indole-3-carboxylate
In the title compound, C(21)H(22)N(2)O(6)S, the phenyl ring forms a dihedral angle of 83.17 (7)° with the indole ring system. The methyl group of the ester unit is disordered over two positions with site occupancies of 0.635 (6) and 0.365 (6). In the crystal structure, weak intra-molecular C-H⋯O inter-actions and inter-molecular C-H⋯O, C-H⋯N and C-H⋯π inter-actions are observed.
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In the title compound, C(25)H(26)N(2)O(3), the double bond connecting the aza-bicyclic and indole units has Z geometry. The compound was obtained as a racemate, and since the crystal is centrosymmetric it contains equal amounts of the S and R enanti-omers. However, the structure is disordered such that the asymmetric unit contains both enanti-omers in unequal amounts [refined occupancies 0.904 ...
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In the title compound, C(25)H(23)BrN(2)O(4), the seven-membered ring adopts a twisted-boat conformation. The indole ring system is planar within 0.021 (2) Å and the ester group [-C(=O)-O-C-] is almost coplanar with it [dihedral angle = 3.0 (2)°]. The conformation of the ester group is influenced by intra-molecular C-H⋯O inter-actions. In the crystal structure, mol-ecules are linked into chains ...
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There are two independent mol-ecules in the asymmetric unit of the title compound, C(19)H(19)NO(4). The indole unit in each mol-ecule is essentially planar, with mean deviations of 0.017 (1) and 0.013 (1) Å and forms dihedral angles of 50.17 (7) and 26.05 (6)° with the phenyl ring. In the crystal, mol-ecules are linked by weak C-H⋯π inter-actions.
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عنوان ژورنال:
دوره 65 شماره
صفحات -
تاریخ انتشار 2009