2-(5-Bromopyridin-3-yl)-5-[3-(4,5,6,7-tetrahydrothieno[3,2-c] pyridine-5-ylsulfon-yl)thio-phen-2-yl]-1,3,4-oxa-diazole

Abstract

In the title compound, C 18H 13BrN 4O 3S 3, the tetra-hydro-pyridine ring adopts a half-chair conformation with the central methylene-C atom of the NCH 2CH 2 unit at the flap. The dihedral angles between the tetra-hydro-pyridine ring and the pyridine and two thiophene rings are 69.34 (13) 5.66 (13) and 68.63 (13) , respectively, while the dihedral angle between the 1,3,4-oxadiazole and tetrahydropyridine rings is 54.76 (13) . The molecule is stabilized by an intramolecular C-H?N interaction. In the crystal, adjacent molecules are connected via bifurcated C-H?(N,O) hydrogen bonds, forming a chain along the b axis.