Notizen: Umsetzung von Alkylschwefeltrichlorid und Schwefeltetrachlorid mit Äthylmercaptan

The Chemistry of Organic Polysulfanes R−Sn−R (n > 2)

“…Other alkylaryltrisulfanes have been prepared by analogous reactions. The reaction of alkoxythionyl chloride with thiols proceeds also via reactive intermediates and is therefore useful for the preparation of asymmetrical trisulfanes according to eqs 53−55, with R = alkyl and R‘= aryl: 90 The reduction of trisulfane 1-oxides, R−S(O)−S−S−R, by thiols R‘SH results in asymmetrical di- and trisulfanes: Sulfur tetrachloride SC1 4 and ethanethiol react at −20 °C or below in ether according to eq 57 since the expected tetrathiosulfurane (RS) 4 S is unstable and has never been observed: However, since SCl 4 easily decomposes to SCl 2 and Cl 2 , the observed products most likely originate from the reaction of the thiol with the dissociation products of SCl 4 . In a seemingly similar reaction, SF 4 and potassium ethyl xanthate yield the corresponding di- and trisulfanes in benzene at 20 °C: 26 …”