The synthesis of 4-(2-hydroxyaryl)-5-methyl-1,3-dithiol-2-thiones has been accomplished by the reaction of the corresponding 4-(2-hydroxyaryl)-5-methyl-1,3-dithiol-2-ylium perchlorates with sodium sulfide nonahydrate in ethanol at room temperature. The newly obtained derivatives were characterized by NMR and MS spectrometry and IR spectroscopy.
16. Sarbu, L.G.; Birsa, A.; Hopf, H.; Birsa, M.L. New Bridges In [2.2]Paracyclophanes: The Interaction Of Chalcogenide Halides With Pseudo-Geminal Triple Bonds. Phosphorus, Sulfur, and Silicon, and the Related Elements2011, 186, 1246-1250.