title: Ethyl 2-[(2-hy-droxy-benzyl-idene)amino]-6-methyl-4,5,6,7-tetra-hydro-thieno[2,3-c]pyridine-3-carboxyl-ate.
abstract: The title compound, C18H20N2O3S, exists as the phenol-imine form in the crystal and there are bifurcated intra-molecular O-H⋯(N/O) hydrogen bonds present. The conformation about the C=N bond is anti (1E); the C=N imine bond length is 1.287 (4) Å and the C=N-C angle is 122.5 (3)°. In the tetrahydrothienopyridine moiety, the six-membered ring has a flattened-boat conformation. In the crystal, mol-ecules are stacked nearly parallel to (110) and a weak C-H⋯π inter-action is observed. The carbonyl O atom is disordered over two positions and was refined with a fixed occupancy ratio of 0.7:0.3.
authors.affiliation: Department of Chemistry, Hitit University, 19030 Çorum, Turkey.
authors.forename: Naki
authors.initials: N
authors.lastname: Colak
authors.forename: Dursun Ali
authors.initials: DA
authors.lastname: Köse
authors.forename: Nazmiye
authors.initials: N
authors.lastname: Marım
authors.forename: Omer
authors.initials: O
authors.lastname: Celik
authors.forename: Tuncer
authors.initials: T
authors.lastname: Hökelek
references.citation: Acta Crystallogr C. 2004 Nov;60(Pt 11):o803-5
references.pmid: 15528825
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677
references.citation: Acta Crystallogr D Biol Crystallogr. 2009 Feb;65(Pt 2):148-55
references.pmid: 19171970