(IUCr) Crystallography Journals Online

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Acta Cryst. (2009). E65, o257 [ doi:10.1107/S1600536809000269 ]

Ethyl 3-(4-methylbenzenesulfonamido)thieno[2,3-b]pyridine-2-carboxylate

W. Zhang, R. Zheng, H. Song, S.-Y. Yang and L.-T. Yu

Abstract: The thieno[2,3-b]pyridine ring system of the title compound, C₁₇H₁₆N₂O₄S₂, is essentially planar, the amino and carbonyl groups being nearly coplanar with the heterocyclic ring system. There are two N-HO hydrogen-bonding interactions involving the same N-H donor set and two different acceptors, one in an intramolecular bond helping to fix the molecular geometry and the other defining a dimeric structure around the symmetry centre at (0, ${\\script{1\\over 2}}$ , ${\\script{1\\over 2}}$ ).

Online 8 January 2009