6294-31-1Relevant articles and documents
A green disulfide synthesis method
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Paragraph 0046-0048, (2022/01/08)
The present invention discloses a green disulfide synthesis method, belonging to the field of green chemical and organic synthesis technology. Under room temperature, open, neutral conditions, rapid preparation of parent nuclei is alkanes, olefins, aromatic hydrocarbons, oxazole, thiazole, pyrazole, imidazole, etc. and their derivatives of symmetrical disulfide, the catalyst is MBrx(M is Fe2+,Fe3+,Ce3+, etc., x is 2-3), the only oxidant isH2O2. The present invention is reacted by using commercially available and low-cost reagents (e.g., FeBr2,CeBr3 andH2O2,etc.) and common organic solvents, the steps are concise, the operation is convenient, the reaction is rapid, the reaction conditions are mild, the room temperature is open, and no further purification can be obtained pure disulfide, more advantageous than all previous methods, is expected to be in organic synthesis, medicine, Pesticides and electronics and other industries are widely used.
Electrochemical synthesis of organochalcogenides in aqueous medium
Ribeiro Neto, Pedro B.,Santana, Sonydelane O.,Levitre, Guillaume,Galdino, Danilo,Oliveira, Jadson L.,Ribeiro, Rogério T.,Barros, Maria E. S. B.,Bieber, Lothar W.,Menezes, Paulo H.,Navarro, Marcelo
supporting information, p. 657 - 661 (2016/02/12)
The electrochemical preparation of telluride, selenide and sulfide ions was carried out in NaOH aqueous solution, using a two compartment cell. Organochalcogenides were prepared from halogenated compounds in a two-step procedure. The monochalcogenides were obtained as the major products in good yields.
Reaction mechanisms of thioetherification for mercaptans and olefins over sulfided Mo-Ni/Al2O3 catalysts
Shen, Zhibing,Ke, Ming,Yu, Pei,Hu, Haiqiang,Song, Zhaozheng,Jiang, Qingzhe
, p. 120 - 127 (2015/02/02)
The thioetherification reaction of 1-butanethiol and 1-hexene dissolved in n-hexane was investigatedover sulfided Mo-Ni/Al2O3catalysts. The experimental results showed the catalysts have good cat-alytic performance for thioetherification reaction, but the isomerization and hydrogenation reactions of olefins over the catalysts can inhibit thioetherification reaction. As reaction temperature increases,the isomerization and hydrogenation reactions of olefins increase rapidly, however, the inhibition of thioetherification reaction also increases. The sulfur distribution and molecular structures of sulfurcompounds in the products were analyzed by the gas chromatograph with sulfur chemiluminescencedetector (GC-SCD) and the gas chromatograph/mass spectra spectrometry (GC/MS). Two possible routesof thioetherification reaction could be observed. At low temperature, the major pathway involves a directaddition of 1-butanethiol to the terminal carbon of double bond of 1-hexene. In this mechanism, the mainproduct is anti-Markovnikov adduct. At a higher temperature, the C S bond of 1-butanethiol can be sub-sequently cleaved, and the adsorbed -SH species can be formed on the catalysts. On the same time,abundant 1-hexene can be absorbed on the catalysts, as well. Therefore, the adsorbed SH species canthen recombine with adsorbed 1-hexene to form new hexyl-mercaptans, which can continue to produceanother kind of thioether (di-hexyl sulfide) with adsorbed 1-hexene. Similar with the first reaction route,the thioether of the anti-Markonikov adduct still dominates in the product.
S-Acylation of aliphatic and aromatic thiols with carboxylic acids and their esters over solid acid catalysts in the gas phase at temperatures above 200 °c
Nagashima, Sayoko,Yamazaki, Hitomi,Kudo, Kentaro,Kamiguchi, Satoshi,Chihara, Teiji
, p. 332 - 338 (2013/07/26)
Benzenethiol is reacted with acetic acid in a hydrogen stream over [(Mo6Cl8)Cl4(H2O) 2]·6H2O. Catalytic activity of the clusters appears above 200 °C, yielding S-phenyl thioacetate. The selectivity is 98% at 300 °C. Niobium, tantalum, and tungsten halide clusters with the same octahedral metal framework also catalyze the reaction. Benzoic acid and aliphatic carboxylic acids afford the corresponding S-phenyl carbothioates by reaction with benzenethiol. Aliphatic thiols are also S-acylated to yield the corresponding S-alkyl carbothioates. When carboxylic esters are applied to the reaction with benzenethiol over [(Nb6Cl12)Cl 2(H2O)4]·4H2O at 450 °C, the sterically unhindered moiety of the ester is incorporated into the products: S-phenyl thioacetate or methyl phenyl sulfide is obtained selectively. A Br?nsted acid site developed on the cluster complex by thermal activation is the active site of the catalyst. Hence, solid acids such as silica-alumina, zeolites, and heteropoly acids that are stable above 200 °C also catalyze these reactions.
Microwave-assisted synthesis of disulfides using tetrathiomolybdate: A step toward greener synthesis
Sidiq, Naheed,Bhat, Mohsin Ahmad,Khan, Khaliquz Zaman,Khuroo, Mohammad Akbar
experimental part, p. 373 - 376 (2012/08/28)
An eco-friendly, efficient, and rapid synthetic procedure for disulfides using benzyl triethyl ammonium tetrathiomolybdate through microwave irradiation of solid support adsorbed reactants is reported.
One-pot reduction of sulfoxides with NaBH4, CoCl2. 6H2O catalyst, and moist alumina
Yakabe, Shigetaka,Hirano, Masao,Morimoto, Takashi
experimental part, p. 2251 - 2255 (2011/06/27)
Sulfoxides are reduced by a combination of sodium borohydride, a catalytic amount of cobalt(II) chloride hexahydrate, and chromatographic neutral alumina preloaded with a small amount of water (moist alumina) in hexane to produce the corresponding sulfides in good to excellent yields under mild conditions. An interesting structural influence of sulfoxides on their reactivity is observed. Copyright
METHOD FOR THE ORGANOMETALLIC PRODUCTION OF ORGANIC INTERMEDIATE PRODUCTS COMPRISING CARBON-HETEROATOM BONDS ACHIEVED BY THE DEPROTONATION OF HETEROATOMS
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Page/Page column 13, (2008/06/13)
The invention relates to a method for binding heteroatom-carbon bonds. According to said method, a lithium compound (II) is first generated by reacting aliphatic or aromatic halogen compounds (I) with lithium metal, said compound is then used for the deprotonation of the compounds (III) or (V). The lithium salts of formulas (IV) or (VI) obtained by said deprotonation are subsequently reacted with suitable carbon electrophiles (equation I), said process binding the heteroatom-carbon bond and forming the products (VIII) or (VIII), (equation I).
Chemoselective deoxygenation of sulfoxides with titanium tetraiodide
Shimizu,Shibuya,Hayakawa
, p. 1437 - 1438 (2007/10/03)
Chemoselective deoxygenation of sulfoxides was carried out using TiI4 as a reducing agent to give sulfides in good to excellent yields.
Novel rearrangements of 2,3-dimercapto-1-propanol derivatives: Formation of dialkyl sulfide, dialkyl disulfide, and 1,2,3-tris(alkylthio)propane
Ong, Chi Wi,Chou, Yi Meen,Wang, Junn Nan
, p. 8244 - 8247 (2007/10/03)
The base alkylation of 2,3-dimercapto-1-propanol with alkyl halides leads in good yield to 2,3-bis(alkylthio)-1-propanol and dialkyl sulfide. The reaction of 2,3-bis(alkylthio)-1-propanol with catalytic concentrated sulfuric acid proceeds with rearrangement to give 1,2,3-tris(alkylthio)propane and dialkyl disulfide. The rearrangement reaction takes place through a common intermediate thiaranium intermediate 8.
