13730-34-2Relevant articles and documents
Thermochemistry of Perthiyl Radicals
Hawari, J. A.,Griller, D.,Lossing, F. P.
, p. 3273 - 3275 (1986)
Mass spectrometry was used to measure appearance energies for the reaction RSS-t-Bu -> RSS. + t-Bu+ for R = Me, Et, i-Pr, and t-Bu.The data lead to the heats of formation of perthiyl radicals, RSS., and hence to S-C bond dissociation energies in disulfides (ca. 54 kcal mol-1) and to S-S bond dissociation energies for the central bonds of tetrasulfides (32.3 +/- 1.0 kcal mol-1).The appearance energy method was also used to measure the ionization energy of t-BuSS. (8.25 +/- 0.08 eV) and the heat of formation of the ion t-BuSS+ (195 +/- 2 kcal mol-1).
From symmetrical tetrasulfides to trisulfide dioxides: Via photocatalysis
Gong, Kai,Jiang, Xuefeng,Zhou, Yilin
supporting information, p. 9865 - 9869 (2021/12/24)
A straightforward strategy involving photocatalysis has been established for accessing trisulfide dioxides from readily achieved symmetrical tetrasulfides. Stern-Volmer analysis and radical quenching experiments demonstrated the occurrence of a single electron transfer between the photocatalyst and sulfinic acid. Bioactive molecules such as the antihypertensive drug captopril, allicin derivatives, amino acids and terpenes were efficiently and reversibly linked through sulfur-sulfur covalent bonds. Furthermore, flow-setup syntheses of trisulfide dioxides were successfully achieved on the gram scale, indicating the great potential of the developed protocol for practical industrial applications. This journal is
Insertion of a two sulfur unit into the S-S bond - Tailor-made polysulfides
Rys,Harpp
, p. 7169 - 7172 (2007/10/03)
Triphenylthiosulfenyl chloride (1) reacts with disulfides RSSR, yielding tetrasulfides as the main products. The results of the insertion for different R groups are reported. A two-step mechanism involving the formation of unsymmetrical trisulfide intermediates containing the trityl group is proposed. (C) 2000 Elsevier Science Ltd.
Formation of dialkyl polysulfides from vinyl ethers in the system H2S-DMSO-MOH
Musorin,Sedunova,Trofimov
, p. 794 - 797 (2007/10/03)
The reaction of vinyl ethers with the system H2S-DMSO-MOH (30°C, 5 h) gives dialkyl polysulfides with a total yield of up to 65% instead of expected oxygen-containing thiols and sulfides. The ratio between dialkyl di-, tri-, and tetrasulfides depends on the nature of the vinyl ether and on the amount of alkali metal hydroxide in the reaction mixture. With di(propen-1-yl) ether, 4-methyl-2-ethyl-1,3-oxathiolane was also found as a by-product.
