100-32-3Relevant articles and documents
Oxidation of thiols using K2S2O8 in ionic liquid
Hajipour, Abdol R.,Mostafavi, Majid,Ruoho, Arnold E.
, p. 1920 - 1923 (2009)
A green, straightforward, and novel method for oxidation of thiols to the corresponding disulfides is reported using K2S2O8 in the ionic liquid 1-butyl-3-methylimidazolium bromide [(bmim)Br] at 65-70C. The corresponding disulfides were obtained in excellent yield and short reaction time.
REDUCTION OF HALONITROBENZENES TO HALOANILINES BY HYDROGEN SULFIDE
Rybakova, I. A.,Shekhtman, R. I.,Prilezhaeva, E. N.,Litvinov, V. P.,Shakhovskoi, G. P.
, p. 1901 - 1903 (1991)
A selective method has been developed for the preparation of haloanilines by the reduction of the corresponding halonitrobenzenes using hydrogen sulfide in the presence of tetraalkylammonium hydroxide.
Selective synthesis of organic sulfides or disulfides by solvent exchange from aryl halides and KSCN catalyzed by NiCl2·6H2O
Abbasi, Mohammad,Nowrouzi, Najmeh,Latifi, Hadis
, p. 112 - 117 (2016)
A method for selective synthesis of symmetric sulfides or disulfides from the reaction of aryl halides with KSCN by solvent exchange is introduced. Aryl halides were selectively converted to the symmetric disulfides or sulfides in high yields when they are treated with KSCN in the presence of NiCl2·6H2O and DMAP at 140?°C in DMF or poly ethylene glycol (PEG-200) respectively.
Facile solvent-free oxidation of thiols mediated by mineral supports
Sainte-Marie, Laurent,Guibe-Jampel, Eryka,Therisod, Michel
, p. 9661 - 9662 (1998)
Oxidation of thiols dispersed without solvent on a weakly basic mineral support was easily performed by heating in air.
On the reaction of triaryl trithioarsenites, (ArS)3As, with iodine
Markaki, Maria D.,Ioannou, Panayiotis V.
, p. 921 - 929 (2006)
Iodine in dry nonprotic solvents oxidizes triaryl trithioarsenites, (ArS)3 As, to As(III) iodide, AsI3, and disulfides, ArSSAr. The reaction most likely involves arylsulfenyl iodide, ArSI, as an intermediate. With triphenyl and tris(
Alumina: An Efficient and Reusable Catalyst for the Oxidative Coupling of Thiols with DMSO
Hirano, Masao,Yakabe, Sigetaka,Monobe, Hiroyuki,Morimoto, Takashi
, p. 472 - 473 (1998)
An inexpensive combination of common laboratory reagents, dimethyl sulfoxide (DMSO) and Chromatographic neutral alumina, gives an efficient, selective, and high-yielding oxidation of aromatic, aliphatic and alicyclic thiols to the corresponding disulfides in excellent yields under relatively mild conditions.
Ligand-free copper-catalysed direct synthesis of diaryl sulfides and diaryl disulfides in wet poly(ethylene glycol)
Nowrouzi, Najmeh,Abbasi, Mohammad,Latifi, Hadis
, (2017)
An improved protocol has been developed for the one-pot CuI-catalysed preparation of symmetric diaryl sulfides from their available aryl halides in the presence of thiourea as sulfur transfer agent and in the absence of both ligand and organic solvent. This catalytic system was also used for the high-yielding preparation of diaryl disulfides in the presence of C2Cl6 as oxidant.
A facile, high-yielding method for the conversion of halides to mercaptans
Bieniarz,Cornwell
, p. 939 - 942 (1993)
An efficient, high-yield, one-pot preparation of alkyl and activated aryl mercaptans is presented. The method relies on sodium thiophosphate displacement of the halide, followed by mild hydrolysis of the intermediate phosphorothioate.
Radical-nucleophilic substitution (SRN1) reactions. Part 7. Reactions of aliphatic α-substituted nitro compounds
Al-Khalil,Bowman,Gaitonde,Marley,Richardson
, p. 1557 - 1565 (2001)
α-Nitrothiocyanates R2C(SCN)NO2 have been prepared by oxidative addition of thiocyanate anion to nitronate anions and undergo SRN1 substitution reactions by loss of thiocyanate with nitronate anions, phenylsulfinate, azide and p-nitro- and p-chloro-benzenethiolates in dipolar aprotic solvents. 2-Nitro-2-thiocyanatopropane and other 2-substituted-2-nitropropanes [Me2C(X)NO2 with X = I, Br, Cl, NO2, PhSO2] react with thiolates by SRN1 reactions and/or redox reactions to give disulfides by a polar abstraction or chain SET (SET2) mechanisms. The products are dependent on the nucleophilicity of the thiolates, the polarisability of the α-substituent, the solvent and the presence of light catalysis, radical traps or strong electron acceptors. 2-Substituted-2-nitropropanes [Me2C(X)NO2 with X = N3, NO2, CN, p-NO2-C6H4-N=N] undergo SRN1 substitutions with thiolates by loss of nitrite. 2-Substituted-2-nitropropanes Me2C(X)NO2 and thiolates only yield disulfides in methanol due to solvation of the nitro groups.
Synthesis and 13C NMR spectra of N-substituted para-quinone imines: II. N-arylthio- and N-arylsulfonyl-l,4-benzoquinone imines with enhanced electron-withdrawing character of the quinoid ring
Pirozhenko,Avdeenko,Yusina,Konovalova
, p. 1142 - 1148 (2002)
Introduction of chlorine substituents into quinone imine fragment results in virtually the same variations in the chemical shifts of the quinoid ring carbons both in N-arylthio and N-arylsulfonyl-1,4-benzoquinone imines as compared to the unsubstituted analogs. In both classes of chloro-substituted compounds the effect of substituents in the benzene ring on the character and the range of chemical shifts variations for the carbon signals from the quinoid ring also turned out to be identical. Any differences observed may be due to the change in the geometry of the molecules, in particular, to the increase in the bond angle C=N-S.
