Synthesis of Novel Bis[(5-cyanopyridin-6-yl)sulfanyl]butanes, Bis(2-S-alkylpyridines), and Bis(3-aminothieno[2,3-b]pyridines) Incorporating 2,6-Dibromophenoxy Moiety

The synthetic precursors pyridine-2(1H)-thiones 2a,b and bis(pyridine-2(1H)-thione) derivative 4, using aldehydes 1a,b incorporating 2,6-dibromophenoxy moiety, were prepared and used to synthesize the novel target materials bis[(5-cyanopyridin-6-yl)sulfanyl]butanes 5a,b, bis(2-S-alkylpyridines) 8a,b, and bis(3-aminothieno[2,3-b]pyridines) 13a–c through facile procedures. Characterization of the newly prepared compounds via elemental analyses and spectral data is established.