20057-88-9Relevant articles and documents
A NEW SYNTHESIS OF ORGANIC TRISULFIDES
Banerji, Asoke,Kalena, Govind P.
, p. 3003 - 3004 (1980)
Thiols react with diimidazolylsulfide under mild conditions to give simmetrical trisulfides in good yield and high purity.
Electrochemical Synthesis of Organic Polysulfides from Disulfides by Sulfur Insertion from S8 and an Unexpected Solvent Effect on the Product Distribution
F?hrmann, Jan,Hilt, Gerhard
, p. 11141 - 11149 (2021/06/09)
An electrochemical synthesis of organic polysulfides through sulfur insertion from elemental sulfur to disulfides or thiols is introduced. The highly economic, low-sensitive and low-priced reaction gives a mixture of polysulfides, whose distribution can be influenced by the addition of different amounts of carbon disulfide as co-solvent. To describe the variable distribution function of the polysulfides, a novel parameter, the “absorbance average sulfur amount in polysulfides” (SAP) was introduced and defined on the basis of the “number average molar mass” used in polymer chemistry. Various organic polysulfides were synthesized with variable volume fractions of carbon disulfide, and the yield of each polysulfide was determined by quantitative 13C NMR. Moreover, by using two symmetrical disulfides or a disulfide and a thiol as starting materials, a mixture of symmetrical and asymmetrical polysulfides could be obtained.
Redox Activation of Hydrogen Sulfide, Thiols, and Sulfur in Electrosynthesis of Organic Di- and Polysulfides
Shinkar’,Smolyaninov,Kuzmin,Berberova
, p. 689 - 696 (2019/06/05)
A novel and efficient method for the synthesis of biologically active organic di-, tri- and tetrasulfides has been proposed. Different methods of redox activation of sulfur, hydrogen sulfide, and thiols in the reactions with organic compounds have been considered. Electrochemical initiation of the reactions of the mediator–H2S–S8 system with cyclohexane, methylcyclohexane, and benzene has occurred to the formation of polysulfides R2Sn (n = 2–4). The application of tetrabutylammonium bromide as a mediator of H2S oxidation has allowed to decrease the anodic overpotential of electrosynthesis. Di- and tetrasulfides have been obtained under anodic activation of the cycloalkanethiols (C5, C6) or thiophenol in the reaction with sulfur. Electroreduction of S8 in the presence of the same thiols has favored the formation of di- and trisulfides. The yield and the ratio of the R5Sn (n = 2–4) depend on the method of redox activation of the thiolating reagent.
Fundamental reactivity of sulfur with organotins: Underexploited Ar-S bond formation under aqueous and aerobic conditions
Gingras, Marc,Chabre, Yoann M.,Raimundo, Jean-Manuel
, p. 2052 - 2057 (2007/10/03)
This work describes a comprehensive study on the reactivity of organotins with elemental sulfur for producing organosulfur compounds and Ar-S bonds. Elemental sulfur, fluoride ions and organotins reacted under aqueous, aerobic and almost neutral conditions to selectively generate disulfides, without forming thiols or thioethers (or sometimes trisulfides). Several parameters were examined in depth: organotins, carbon ligands, fluoride sources, temperatures, solvents and equivalents of sulfur.
