CCl₄AS MILD OXIDANT IN SULFUR CHEMISTRY. VIII.¹ORGANYLTHIOLATION REACTIONS OF CH-ACIDIC COMPOUNDS WITH BIS(DIORGANYLTHIOPHOSPHINOYL)-DISULFIDES IN THE PRESENCE OF CCl₄/BASE

Carbon Tetrabromide-Mediated Carbon−Sulfur Bond Formation via a Sulfenyl Bromide Intermediate

“…To clarify the possible mechanism, some supplementary experiments were carried out. Under otherwise identical conditions, the mixture of the corresponding disulfides including 1,2-diphenyldisulfide, 1,2-dibenzyldisulfide, and 1,2-bis(dimethylamino)disulfide gave no reaction, which ruled out the possible mechanism of first formation of the disulfides and then the substitution of the disulfides by carbon nucleophiles . On the basis of the above results, a possible mechanism for the formation of 3 − 5 , and 7 was proposed, as depicted in Scheme .…”

Benign and High-Yielding, Large-Scale Synthesis of Diphenylphosphinodithioic Acid and Related Compounds

“…Recently, the Michael -like addition of 3a to different acrylates as well as benzoquinone was reported . Also the preparation of bis(diphenylphosphinothioyl) disulfide has been investigated, and different synthetic approaches have been reported. − …”

“…In an earlier approach, the expensive trichloroacetonitrile was applied as oxidation agent, leading to an overall yield of only 49% . Even lower yields (40%) were achieved in a more cumbersome synthesis in which 6b was allowed to react with tetrachloromethane and sodium ethanolate to form 7 . A feasible lab-scale synthesis has been developed in which 6c is converted to 7 in high yield (92%) by treatment with iodine/potassium iodide .…”