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International Union of Crystallography, Acta Crystallographica Section E: Structure Reports Online, 7(68), p. o2111-o2111

DOI: 10.1107/s1600536812026268

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Ethyl 2-amino-4,5-dimethyl­thio­phene-3-carboxyl­ate

Journal article published in 2012 by Mostafa M. Ghorab, Mansour S. Al-Said, Hazem A. Ghabbour, Tze Shyang Chia, Hoong-Kun Fun ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

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.