13133-62-5Relevant articles and documents
GAS PHASE SULFUR ANIONS: SYNTHESIS AND REACTIONS OF H2NS(1-) AND RELATED IONS
DePuy, Charles H.,Bierbaum, Veronica M.
, p. 5129 - 5130 (1981)
Many gas-phase anions react with carbonyl sulfide by sulfur atom transfer to form RS(1-) ions.The properties of H2NS(1-), formed in this way from H2N(1-) and OCS, are described.
Synthesis and biological evaluation of new antioxidant and antiproliferative chalcogenobiotin derivatives for bladder carcinoma treatment
Collares, Tiago,Dornelles, Luciano,Leitemberger, Andrielli,Nogara, Pablo A.,Piccoli, Bruna C.,Rodrigues, Oscar E. D.,Schachtschneider, Kyle M.,Seixas, Fabiana K.,Sonego, Mariana S.,da Silva, Fernanda D.,dos Santos, Alana C. F.,Garcia, Fábio D.,Oliveira, Cláudia S.,Rocha, Jo?o B. T.
, (2020/03/24)
Approximately 90% of bladder carcinomas are of the urothelial carcinoma type, which are characterized by high rates of recurrence and predisposition to progress to invasive tumors, representing one of the most costly neoplasms for health systems. Intraves
Mesolysis Mechanisms of Aromatic Thioether Radical Anions Studied by Pulse Radiolysis and DFT Calculations
Yamaji, Minoru,Tojo, Sachiko,Fujitsuka, Mamoru,Sugimoto, Akira,Majima, Tetsuro
, p. 7890 - 7895 (2015/09/01)
The mesolysis mechanisms for eight aromatic thioether radical anions (ArCH2SAr′?-) generated during radiolysis in 2-methyltetrahydrofuran were studied by spectroscopic measurements and DFT calculation. Seven of ArCH2SAr′s
Reactions of O-aryl S-aryl dithiocarbonates with pyridines in aqueous ethanol: Kinetics and mechanism
Castro, Enrique A.,Gazitua, Marcela,Santos, Jose G.
scheme or table, p. 1003 - 1008 (2010/07/04)
The reactions of O-(4-methylphenyl) S-(4-nitrophenyl) dithiocarbonate (1), O-(4-chlorophenyl) S-(4-nitrophenyl) dithiocarbonate (2), and O-(4-chlorophenyl) S-phenyl) dithiocarbonate (3) with a series of pyridines were subjected to a kinetic investigation
Generation of alkoxycarbenium ion pools from thioacetals and applications to glycosylation chemistry
Suzuki, Shinkiti,Matsumoto, Kouichi,Kawamura, Kohsuke,Suga, Seiji,Yoshida, Jun-Ichi
, p. 3755 - 3758 (2007/10/03)
(Chemical Equation Presented) Alkoxycarbenium ions have been generated and accumulated as "cation pools" by the low-temperature electrochemical oxidation of α-phenylthioethers. Although an unsuccessful attempt to accumulate glycosyl cations was made, a one-pot method for electrochemical glycosylation, which involves anodic oxidation of thioglycosides to generate glycosyl cation equivalents followed by their reactions with glycosyl acceptors, has been developed.
Enhanced reactivity in the ammonolysis of phenyl thiolacetates in aqueous medium
Rajarathnam,Babu,Nadar, P. Ananthakrishna
, p. 18 - 26 (2007/10/03)
The ammonolysis of several substituted phenyl thiolacetates is kinetically studied in aqueous medium, 18°C, ionic strength 0.1 M (KCl). By following the leaving groups spectrophotometrically (λmax = 260-410 nm), under excess free ammonia, pseud
Reduction potentials and kinetics of electron transfer reactions of phenylthiyl radicals: Comparisons with phenoxyl radicals
Armstrong,Sun, Qun,Schuler
, p. 9892 - 9899 (2007/10/03)
The reduction potentials relative to the standard hydrogen electrode (SHE) for a number of para-substituted phenylthiyl radicals (Eo(p-XC6H4S./p-XC6H 4S-)) have been derived from pulse radiolytic studies of electron transfer equilibria which compare their values to those of radicals of known reduction potentials. A ladder combining the reduction potentials for both phenylthiyl and phenoxyl radicals has been established. These reduction potentials have been shown to be self-consistent and are intermediate between those of p-benzosemiquinone radical anion at 0.02 V and phenoxyl radical at 0.79 V. The reduction potential decreases as the electron donating power of the para substituent rises. The substituent effect is, however, much weaker for the phenylthiyl radicals than for their oxygen analogs. These observations demonstrate that the electronic interaction between the sulfur atoms and the aromatic ring system is much less than that which occurs with oxygen atoms. Examination of the rates of electron transfer in terms of the Marcus theory indicates that the reorganization energies of both p-XC6H4O. and p-XC6H4S. radicals are similarly affected by H, CH3, and CH3O substitution. However, the reorganization energies increase substantially for H2N and O- para substituents with the effect being much less for the p-XC6H4S. radicals than for the p-XC6H4O. radicals. These observations are in accord with structural information from spectroscopic and theoretical studies of the radicals which show that in the latter system the substituent groups interact strongly with the aromatic π system.
Formation and scission of the sulfur-sulfur bond: a new approach to reactions between sulfur/polysulfide ions and thiolate ions/disulfides in N,N-dimethylacetamide
Bosser, Gerard,Anouti, Meriem,Paris, Jacky
, p. 1993 - 2000 (2007/10/03)
The reactivity of sulfur towaards a series of thiolate ions RS- has been studied by spectroelectrochemistry in N,N-dimethylacetamide.Apparently, sulfur reacts in two parallel ways: (i) oxidation of RS- leading to RS2R and S3 anion radical ions; (ii) preponderant S-nucleophilic process yielding stable RSx- ions (x = 2-5).RSx- species, whose spectrophotometric characteristics have been determined, are successively obtained in the course of sulfur addition with R = alkyl, whereas equilibria between arylpolysulfide ions were observed.At the junction of these two parallel pathways, the slow keyequilibrium 2RS4- RS2R + 2S3 radical anion has been investigated by addition of RS2RR = 1-8 to S3 radical anion solutions.In fact, our study is consistent with a first, a monoelectronic transfer between RS- (or RS2-) ions and the very reactive S2 molecules in equilibrium with S8.The fact and competing couplings of the radicals RS (or RS2 radical), S2 radical anion (or S3 radical anion) agree with the simultaneous formation of RS2R, RSx- and polysulfide ions.More generally, the S2/S2 radical anion redox system is believed to be involved in thiophilic reactions of a number of anions such as RS- towards sulfur rather than the initial opening of the cyclic S8 form.
Lifetimes of iminium ions in aqueous solution
Eldin, Sherif,Jencks, William P.
, p. 4851 - 4857 (2007/10/02)
Iminium cations have been generated in aqueous solution from the solvolysis of anilinothioethers ArN-(CH3)CH2SR at 25 °C. Common ion inhibition of the solvolysis of anilinothioethers was observed when the thiolate anion leaving group
