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Ethyl 5-acetyl-2-amino-4-methyl-thio-phene-3-carboxyl-ate.

ABSTRACT: In the title compound, C(10)H(13)NO(3)S, prepared in a one-pot reaction, the mol-ecular conformation is stabilized by an intra-molecular N-H?O hydrogen bond. The packing is consolidated by further N-H?O links. The H atoms of two of the methyl groups are disordered over two sets of sites with equal occupancies.

SUBMITTER: Akkurt M

PROVIDER: S-EPMC2961554 | biostudies-literature | 2008 May

REPOSITORIES: biostudies-literature

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Ethyl 5-acetyl-2-amino-4-methyl-thio-phene-3-carboxyl-ate.

Akkurt Mehmet M Yıldırım Sema Öztürk SÖ Asiri Abdullah Mohamed AM McKee Vickie V McKee Vickie V

Acta crystallographica. Section E, Structure reports online 20080517 Pt 6

In the title compound, C(10)H(13)NO(3)S, prepared in a one-pot reaction, the mol-ecular conformation is stabilized by an intra-molecular N-H⋯O hydrogen bond. The packing is consolidated by further N-H⋯O links. The H atoms of two of the methyl groups are disordered over two sets of sites with equal occupancies. ...[more]

PMID: 21202599

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Crystal structure of ethyl 5-acetyl-2-{[(di-methyl-amino)-methyl-idene]amino}-4-methyl-thio-phene-3-carboxyl-ate.

Project description:In the title thio-phene derivative, C13H18N2O3S, the dihedral angles between the thio-phene ring and the [(di-methyl-amino)-methyl-idene]amino side chain (r.m.s. deviation = 0.009 Å) and the -CO2 ester group are 3.01 (16) and 59.9 (3)°, respectively. In the crystal, inversion dimers linked by pairs of C-H⋯O hydrogen bonds generate R 2 (2)(16) loops. The dimers are linked by another weak C-H⋯O inter-action, forming chains along [001]. In addition, weak C-H⋯π inter-actions are observed, which link the chains into (001) layers.

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Ethyl 2-amino-4,5-dimethyl-thio-phene-3-carboxyl-ate.

Project description:In the title compound, C(9)H(13)NO(2)S, the mean planes of thio-phene ring [maximum deviation = 0.0042 (10) Å] and eth-oxy-carbonyl group [0.0242 (15) Å] are almost coplanar [dihedral angle between them = 0.68 (11)°]. The H atoms of the two methyl groups attached to the thio-phene ring are each disordered over two orientations with site-occupancy ratios of 0.77 (4):0.23 (4) and 0.84 (4):0.16 (4). An intra-molecular N-H⋯O hydrogen bond generates an S(6) ring motif. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds into an infinite wave-like chain running parallel to the b-axis direction. The crystal structure also features C-H⋯π inter-actions.

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Ethyl 4-acetyl-5-anilino-3-methyl-thio-phene-2-carboxyl-ate.

Project description:In the title compound, C16H17NO3S, a thio-phene derivative with amino phenyl, acetyl, methyl and ethyl carboxyl susbtituents attached to a central thio-phene ring, the phenyl and thio-phene rings form a dihedral angle of 36.92?(9)?Å. The mol-ecular conformation is stabilized by an intra-molecular N-H?O hydrogen bond, which forms an S(6) ring motif.

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Ethyl 3-amino-5-anilino-4-cyano-thio-phene-2-carboxyl-ate.

Project description:In the title compound, C14H13N3O2S, the dihedral angle between the thio-phene and phenyl rings is 24.95?(8)°. The mol-ecular structure is consolidated by intra-molecular N-H?O and C-H?S inter-actions. The crystal structure features N-H?N and N-H?O hydrogen bonds forming centrosymmetric R 2 (2)(12) dimers, which are linked into a two-dimensional network parallel to (011) with an S(6)R 2 (2) S(6) motif. In addition, ?-? stacking inter-actions [centroid-centroid distance = 3.7013?(12)?Å] occur between the thio-phene and phenyl rings of adjacent mol-ecules.

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Crystal structure of 4-amino-5-chloro-2,6-di-methyl-pyrimidinium thio-phene-2,5-di-carboxyl-ate.

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Project description:The anion of the title compound, C(5)H(6)N(+)·C(5)H(2)NO(4)S(-), is approximately planar, with the carboxyl-ate and nitro group planes forming dihedral angles of 7.5?(3) and 3.5?(3)°, respectively, with the thio-phene ring. In the crystal structure, the cations and anions are linked into a two-dimensional network parallel to (011) by N-H?O and C-H?O hydrogen bonds.

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Crystal structure of diethyl 2-amino-5-{4-[bis-(4-methyl-phen-yl)amino]-benzamido}-thio-phene-3,4-di-carboxyl-ate.

Project description:In the title compound, C31H31N3O5S, the regioselective substitution of the thio-phene is confirmed with the amine and the amide at the 2- and 5-positions, respectively. In the mol-ecule, the thio-phene ring is twisted by 12.82 (3)° with respect to the aromatic ring of the benzamido group. Intra-molecular N-H⋯O hydrogen bonds are present involving the N atoms of the primary amine and the amide groups, forming S(6) ring motifs. In the crystal, centrosymmetrically related mol-ecules are linked by pairs of N-H⋯O hydrogen bonds involving the amide carbonyl O atoms and the primary amine N atoms to form dimers of R 2 2(16) ring motif.

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Ethyl 2-(3-phenyl-thio-ureido)-5,6-di-hydro-4H-cyclo-penta-[b]thio-phene-3-carboxyl-ate.

Project description:In the title compound, C(17)H(18)N(2)O(2)S(2), the angle between the mean plane defined by the atoms of the 5,6-dihydro-4H-cyclo-penta-[b]thio-phene moiety (r.m.s. deviation = 0.19 Å) and the phenyl ring is 72.8°(2). The mol-ecular conformation is stabilized by an intra-molecular N-H⋯O inter-action, which generates an S(6) ring motif. In the crystal, pairs of N-H⋯S hydrogen bonds link the mol-ecules to form inversion dimers with an R(2) (2)(8) ring motif.

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