Two new compounds, l-aza-2, 3-dichlorothianthrene(6) and 6-aza-5, 7, 12, 14- tetrathiapentacene(6) have been prepared by reaction of 2, 3, 5, 6-tetrachloropyridine (4) and l, 2-benzenedithiol in dimethylformamide (DMF) in the presence of sodium bicarbonate. On the other hand, the synthesis of two known compounds, 1-azathianthrene (7) and 5, 7, 12, 14-tetrathiapentacene (8) have been improved by using the same synthetic procedure ...
[Puig-Torres, Salvador; Martin, Gary E.; Ford, Joseph J.; Willcott, M. Robert; Smith, Keith Journal of Heterocyclic Chemistry, 1982 , vol. 19, p. 1441 - 1446]