- Organic Metals: Conducting Complexes of Poly(2,5-thienylene sulphide) and Poly(2,5-thienylene selenide)
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Exposure of highly purified samples of the new polymers poly(2,5-thienylene selenide) (PTSe) and poly(2,5-thienylene sulphide) (PTS) to arsenic pentafluoride afforded a conducting complex (0.12 S/cm) from PTSe but only a moderately conducting complex (ca. 10-5 S/cm) from PTS, a result which is in direct contrast to the behaviour of poly(p-phenylene selenide) and poly(p-phenylene sulphide) upon similar treatment.
- Jen, Kwan-Yue,Benfaremo, Nicholas,Cava, Michael P.,Huang, Wu-Song,MacDiarmid, A. G.
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Read Online
- Dual Roles of Rongalite: Reductive Coupling Reaction to Construct Thiosulfonates Using Sulfonyl Hydrazides
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A tunable and practical transformation of structurally diverse sulfonyl hydrazides into thiosulfonates in the presence of Rongalite (NaHSO 2·CH 2O) was developed. Transition-metal-free conditions, operational simplicity, and readily available reagents are the striking features of this protocol. It is the first example for the synthesis of thiosulfonates using sulfonyl hydrazides with the assistance of reductant. Additionally, the mechanistic studies revealed that this transformation probably undergoes via a reducing-coupling pathway.
- Zhang, Guofu,Fan, Qiankun,Zhao, Yiyong,Wang, Huimin,Ding, Chengrong
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supporting information
p. 81 - 85
(2020/11/03)
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- Metal-free chalcogenation of cycloketone oxime esters with dichalcogenides
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We report the metal-free chalcogenation of cycloketone oxime esters with dichalcogenides via a radical process. Because of the metal-free condition and use of readily accessible dichalcogenides, this method is an effective and green strategy for the synthesis of chalcogen-substituted butyronitrile.
- Ji, Liangshuo,Qiao, Jiamin,Liu, Junjie,Tian, Miaomiao,Lu, Kui,Zhao, Xia
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supporting information
(2021/06/15)
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- Copper-catalyzedortho-selective direct sulfenylation ofN-aryl-7-azaindoles with disulfides
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A copper-catalyzed direct C-H chalcogenation ofN-aryl-azaindoles with disulfides is described. This transformation was performed using Earth abundant Cu(OAc)2as a catalyst, benzoic acid as an additive, air as a terminal oxidant, and readily available diaryl and dialkyldisulfides (or diselenide) as chalcogenation reagents. High functional group tolerance and excellent regioselectivity are demonstrated by the efficient preparation of a wide range ofortho-sulfenylation-7-azaindoles.
- Ru-Jian, Yu,Chun-Yan, Zhang,Xiang, Zhou,Xiong, Yan-Shi,Duan, Xue-Min
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supporting information
p. 2901 - 2906
(2021/04/14)
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- Sequential C-H activation enabled expedient delivery of polyfunctional arenes
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Modular construction of polyfunctional arenes from abundant feedstocks stands as an unremitting pursue in synthetic chemistry, accelerating the discovery of drugs and materials. Herein, using the multiple C-H activation strategy with versatile imidate esters, the expedient delivery of molecular libraries of densely functionalized sulfur-containing arenes was achieved, which enabled the concise construction of biologically active molecules, such as Bipenamol.
- Cai, Xiaoqing,Chen, Qian,Chen, Xiaojian,Gao, Yang,Huo, Yanping,Li, Xianwei,Ouyang, Wensen,Rao, Jianhang,Wang, Jie
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supporting information
p. 8075 - 8078
(2021/08/20)
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- Development of disulfide-derived fructose-1,6-bisphosphatase (FBPase) covalent inhibitors for the treatment of type 2 diabetes
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Fructose-1,6-bisphosphatase (FBPase), as a key rate-limiting enzyme in the gluconeogenesis (GNG) pathway, represents a practical therapeutic strategy for type 2 diabetes (T2D). Our previous work first identified cysteine residue 128 (C128) was an important allosteric site in the structure of FBPase, while pharmacologically targeting C128 attenuated the catalytic ability of FBPase. Herein, ten approved cysteine covalent drugs were selected for exploring FBPase inhibitory activities, and the alcohol deterrent disulfiram displayed superior inhibitory efficacy among those drugs. Based on the structure of lead compound disulfiram, 58 disulfide-derived compounds were designed and synthesized for investigating FBPase inhibitory activities. Optimal compound 3a exhibited significant FBPase inhibition and glucose-lowering efficacy in vitro and in vivo. Furthermore, 3a covalently modified the C128 site, and then regulated the N125–S124–S123 allosteric pathway of FBPase in mechanism. In summary, 3a has the potential to be a novel FBPase inhibitor for T2D therapy.
- Xu, Yi-xiang,Huang, Yun-yuan,Song, Rong-rong,Ren, Yan-liang,Chen, Xin,Zhang, Chao,Mao, Fei,Li, Xiao-kang,Zhu, Jin,Ni, Shuai-shuai,Wan, Jian,Li, Jian
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- Natural gallic acid catalyzed aerobic oxidative coupling with the assistance of MnCO3 for synthesis of disulfanes in water
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The formation of S-S bonds has great significance and value in synthetic chemistry and bioscience. To pursue a sustainable approach for such a synthesis, an aerobic oxidative coupling method for the efficient preparation of organic disulfanes, using a low-toxic natural gallic acid as an organocatalyst, inexpensive MnCO3 as a cocatalyst, O2 as the terminal oxidant and water as the solvent, has been successfully developed. Such metal-organic cooperative catalytic protocol provided an access to various symmetrical and unsymmetrical disulfanes in up to 99% yield. Gram scale synthesis with practical convenience and low loading of catalysts further illustrates the practicability of our method.
- Song, Lijuan,Li, Wenhao,Duan, Wenxue,An, Jichao,Tang, Shanyu,Li, Longjia,Yang, Guanyu
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supporting information
p. 1432 - 1438
(2019/03/26)
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- Magnetic iron oxide nanoparticles/K2S: a simple and scale-up method for the direct synthesis of symmetrical disulfides from aryl halides
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A simple, one-pot, efficient and novel protocol has been developed for direct synthesis of symmetrical organic disulfides by domino reaction of aryl halides and K2S in the presence of magnetic Fe3O4 nanoparticles as a readily available, highly efficient and recyclable catalyst. A variety of diaryl disulfides can be obtained in good-to-excellent yields up to 98%.
- Soleiman-Beigi, Mohammad,Mohammadi, Keivan,Mohammadi, Fariba
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p. 1545 - 1550
(2018/06/21)
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- An Organodiselenide with Dual Mimic Function of Sulfhydryl Oxidases and Glutathione Peroxidases: Aerial Oxidation of Organothiols to Organodisulfides
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A novel organodiselenide, which mimics sulfhydryl oxidases and glutathione peroxidase (GPx) enzymes for oxidation of thiols by oxygen and hydrogen peroxide, respectively, into disulfides has been presented. The developed catalyst oxidizes an array of organothiols into respective disulfides in practical yields by using aerial O2 to avoid any reagents/additives, base, and light source. The synthesized diselenide also catalyzes the reduction of hydrogen peroxide into water by following the GPx enzymatic catalytic cycle with a reduction rate of 49.65 ± 3.7 μM·min-1.
- Rathore, Vandana,Upadhyay, Aditya,Kumar, Sangit
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supporting information
p. 6274 - 6278
(2018/10/05)
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- Metal–organic framework MOF-199-catalyzed direct and one-pot synthesis of thiols, sulfides and disulfides from aryl halides in wet polyethylene glycols (PEG 400)
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A highly porous metal–organic frame work Cu3 BTC2 (copper(II)-benzene-1,3,5-tricarboxylate) that is known as MOF-199 was synthesized from the reaction of 1,3,5-benzenetricarboxylic acid and Cu(OAc)2·H2O by a solvothermal method and characterized by several techniques including FT-IR, XRD, EDX and scanning electron microscopy. The MOF-199 used as an efficient catalyst for one-pot synthesis of thiols by domino reactions of aryl halides and thiourea, and subsequently conversion to aryl alkyl sulfides and diaryl disulfides in polyethylene glycols (PEGs). A variety of aryl alkyl sulfides can be obtained in good to excellent yields in a relatively short reaction time and in the presence of the trace amount of catalyst. Also, the catalyst can be separated from the reaction mixture by decanting, and be reused without significant degradation in catalytic activity.
- Soleiman-Beigi, Mohammad,Sadeghizadeh, Fatemeh,Basereh, Ali
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p. 572 - 583
(2017/09/27)
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- Ligand-free copper-catalysed direct synthesis of diaryl sulfides and diaryl disulfides in wet poly(ethylene glycol)
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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.
- Nowrouzi, Najmeh,Abbasi, Mohammad,Latifi, Hadis
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- Method for catalyzing molecular oxygen to oxidize into disulfides with S-S bonds in aqueous phase
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The invention provides a method for catalyzing molecular oxygen to oxidize into disulfides with S-S bonds in an aqueous phase. The method includes taking water-soluble transition metal phthalocyanine compounds as catalysts, and enabling sulfhydryl compounds to react for 1-30 hours in the aqueous phase at a pressure of 0.01-1.00 Mpa, at 40-100 DEG C and in the presence of oxygen or air so as to obtain the disulfides with the S-S bonds. The method has the advantages that reaction is conducted in the aqueous phase, so that addition of other organic solvents is unneeded; the catalysts are high in catalytic activity, high in reaction efficiency and reusable; the method is simple in synthetic process, high in product selectivity, fewer in byproducts and wastes and environment friendly, thereby being promising in industrial application prospect.
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Paragraph 0022; 0023; 0029; 0030
(2017/08/29)
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- Reusable cobalt-phthalocyanine in water: Efficient catalytic aerobic oxidative coupling of thiols to construct S-N/S-S bonds
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A new aerobic oxidative coupling of thiols in water to construct sulfenamides or disulfides was developed, utilizing cobalt(ii)phthalocyanine-tetra-sodium sulfonate as the catalyst and O2 as the oxidant. The mother liquor could be recycled up to 20 times with negligible loss of activity and only a minor decrease of product yield.
- Dou, Yingchao,Huang, Xin,Wang, Hao,Yang, Liting,Li, Heng,Yuan, Bingxin,Yang, Guanyu
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supporting information
p. 2491 - 2495
(2017/07/17)
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- Tunable and Practical Synthesis of Thiosulfonates and Disulfides from Sulfonyl Chlorides in the Presence of Tetrabutylammonium Iodide
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A tunable and practical synthesis of electrophilic sulfenylating reagents, thiosulfonates and disulfides, from inexpensive and easily available sulfonyl chlorides, has been developed. By appropriate choice of solvents, the reaction of sulfonyl chlorides and tetrabutylammonium iodide gave the target products in good to excellent yields, respectively. These transformations probably proceed through a reducing–coupling pathway. (Figure presented.).
- Zheng, Yong,Qing, Feng-Ling,Huang, Yangen,Xu, Xiu-Hua
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supporting information
p. 3477 - 3481
(2016/11/13)
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- Metal Organic Framework 199- Catalyzed Domino Sulfur-Coupling and Transfer Reactions: The Direct Synthesis of Symmetric Diaryl Disulfides from Aryl Halides
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Abstract: A highly porous metal–organic framework Cu3 BTC2 (copper(II)-benzene-1,3,5-tricarboxylate) that known as MOF-199 was synthesized, and characterized by common methods including, FT-IR, XRD, EDX, SEM and then used as an efficient and recyclable catalyst for the direct synthesis of symmetric organic disulfides. A variety of symmetric diaryl disulfides with high chemoselectivity can be obtained by domino reaction of aryl halides (and tosylates) and potassium 5-methyl-1,3,4-oxadiazole-2- thiolate, as the base and sulfur-transfer reagent, in the presence of MOF-199. Graphical Abstract: [Figure not available: see fulltext.]
- Soleiman-Beigi, Mohammad,Mohammadi, Fariba
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p. 1497 - 1504
(2016/07/30)
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- An efficient domino Cu-mediated access to organic disulfides from aryl/alkyl halides: Sodium thiosulfate used as a sulfurating reagent
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Background: We have developed a one-pot, simple and efficient protocol for the direct synthesis of symmetrical organic disulfides in high yields via domino reaction between aryl/alkyl halides and Sodium thiosulfate as the sulfur source, in the presence of copper/imidazole and K2CO3. Methods: Owing to the importance seen in the synthesis disulfides, as is evident from the number of publications in the recent past, and our continuing interest in the synthesis of organosulfur compounds using direct synthesis and domino reaction. Herein we designed the synthesis of various disulfide using reaction of aryl/alkyl halides with sodium thiosulfate in presence CuI catalyst, K2CO3 and imidazol as ligand in solvent DMSO. The reaction of iodobenzene with sodium thiosulfate was studied under normal atmospheric conditions in order to optimize the reaction conditions in terms of temperature, amount of reagent and catalyst, and the type of ligand. Results: Effect of solvent and ligand was perceptible, The reaction proceeded not well in the absence of a ligand. The best ligand for these reaction was imidazole. The various solvents tested in this investigation. It was observed that excellent yield of the product was obtained when the reaction was carried out by using DMSO as solvent. The reaction no proceeded in the absence of a base. K2CO3 was a good choice. We examined various amount of the copper salt. It was found to be the best choice in presence 0.7 mmol from copper salt. Also it was significantly found that the reaction yield and rate increased with temperature. The reaction favoured at 130°C temperature. The 3 mmol Na2S2O3·5H2O concentration was sufficient to give maximum yield of the required product in comparison with other amounts. Diaryl/alkyl disulfides were synthesized in terms of the connecting and type position of the substituents on the aryl/alkyl groups, so that products with different substituents, both electron withdrawing and electron-donating substituent, were synthesized in the ortho, meta and para positions. The results show that iodobenzene and bromobenzene were effective for the reaction. Although it was seen that the reaction cannot progress with compound of aryl chloride. Symmetrical diheteroaryl disulfides were well synthesized from the corresponding heteroaryl iodides, bromides and chlorides. Conclusion: In summary, we have developed a new and effective method for the direct synthesis of diaryl/alkyl disulfides from various aryl/alkyl halides by domino reaction. In this work reports an effective and cheap metal catalyzed sulfur transfer reaction, which is more economic, and more environmentally friendly and more comprehensive than previous methods. As a novel sulfur source, Na2S2O3 shows notable advantage in this system. This reaction functions under mild conditions, and various functional groups are well tolerated.
- Soleiman-Beigi, Mohammad,Basereh, Ali,Mohammadi, Fariba
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p. 706 - 710
(2017/02/05)
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- Symmetrical disulfide synthesis via nickel-catalysis using potassium sulfide as sulfur source
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Abstract: An efficient one-pot method for the synthesis of organic disulfides from aryl and alkyl halides and potassium sulfide has been described. K2S acts as an inexpensive and readily available sulfur source. A variety of symmetric diaryl and dialkyl disulfides was prepared in good to excellent yields using NiCl2·6H2O and acetylacetone as the catalytic system. Graphical abstract: [Figure not available: see fulltext.]
- Soleiman-Beigi, Mohammad,Arzehgar, Zeinab
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p. 1759 - 1763
(2016/09/28)
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- An efficient and convenient method for the preparation of disulfides from thiols using oxygen as oxidant catalyzed by tert-butyl nitrite
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An efficient and convenient tert-butyl nitrite-catalyzed selective aerobic oxidation of thiols has been developed. Under the optimal reaction conditions, a number of thiol derivatives including aromatic thiols, heteroaromatic thiols and aliphatic thiols can be converted into their corresponding disulfides in good to excellent yields.
- Yi, Shan-Li,Li, Mei-Chao,Hu, Xin-Quan,Mo, Wei-Min,Shen, Zhen-Lu
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p. 1505 - 1508
(2016/09/23)
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- A novel nickel-catalyzed domino method for the direct synthesis of symmetrical disulfides using potassium 5-methyl-1,3,4-oxadiazole-2-thiolate as a sulfurating reagent
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A simple, one pot, efficient, and novel protocol has been developed for the direct synthesis of symmetrical organic disulfides using a domino reaction between an aryl/alkyl halide and potassium 5-methyl-1,3,4-oxadiazole-2-thiolate in the presence of NiCl2 as catalyst. A variety of symmetrical aryl/alkyl disulfides can be obtained in moderate to excellent yields (up to 95%).
- Soleiman-Beigi, Mohammad,Mohammadi, Fariba
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supporting information
p. 911 - 914
(2015/04/27)
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- The direct synthesis of symmetrical disulfides and diselenides by metal-organic framework MOF-199 as an efficient heterogenous catalyst
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A highly crystalline porous copper-based metal-organic framework MOF-199 was synthesized, and characterized by several techniques, including XRD, EDX, SEM, and FT-IR. MOF-199 was used as an efficient catalyst for the one-pot and efficient synthesis of organic dichalcogenides from aryl halides (-OTs) and elemental sulfur and selenium in polyethylene glycols (PEGs). A variety of disulfides and diselenides can be obtained in good to excellent yields of up to 98% in a relatively short reaction time.
- Soleiman-Beigi, Mohammad,Yavari, Issa,Sadeghizadeh, Fatemeh
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p. 87564 - 87570
(2015/11/09)
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- An efficient one-pot method for the direct synthesis of organic disulfides from aryl/alkyl halides in the presence of CuCl using morpholin-4-ium morpholine-4-carbo-dithioate
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A novel and expedient route is described for the one-pot synthesis of symmetric diaryl (dialkyl) disulfides derivatives via morpholin-4-ium morpholine-4-carbo-dithioate and aryl (alkyl) halides reactions in the presence of CuCl in an aqueous solvent system. Morpholin-4-ium morpholine-4-carbo-dithioate used as new solid, stable and easy handle sulfur Sourcage.
- Soleiman-Beigi, Mohammad,Arzehgar, Zeinab
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p. 395 - 402
(2015/06/22)
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- Ni-Catalyzed Cross-Coupling Reaction: The Direct Synthesis of Symmetrical Disulfanes from Aryl and Primary Alkyl Halides
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A novel Ni-catalyzed cross-coupling reaction is introduced for the direct synthesis of diaryldisulfanes and dialkyldisulfanes from aryl halides and primary alkyl halides at normal atmospheric conditions, respectively. This one-pot and domino protocol utilizes only 10 mol% of NiCl2 as a catalyst and morpholin-4-ium morpholine-4-carbo-dithioate as a new, stable, solid, and odorless sulfurating reagent in the presence of ethylene glycol as a cosolvent and bidentate ligand in dimethyl formamide (DMF) at 130°C with good to excellent yields and relatively short time reaction.
- Soleiman-Beigi, Mohammad,Arzehgar, Zeinab
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p. 355 - 360
(2015/09/22)
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- An efficient, one-pot and CuCl-catalyzed route to the synthesis of symmetric organic disulfides via domino reactions of thioacetamide and aryl (alkyl) halides
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In this article, a simple, general and novel method for the synthesis of diaryl (dialkyl) disulfides from aryl (alkyl) halides is described. This is a convenient approach that involves the use of commercially available and inexpensive thioacetamide as a sulfur transfer reagent in the domino process for the synthesis of symmetric organic disulfides. Copyright
- Soleiman-Beigi, Mohammad,Hemmati, Maryam
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p. 734 - 736
(2013/12/04)
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- A novel copper-catalyzed, one-pot synthesis of symmetric organic disulfides from alkyl and aryl halides: Potassium 5-methyl-1,3,4-oxadiazole-2-thiolate as a novel sulfur transfer reagent
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A new method is reported for the synthesis of symmetric diaryl and dialkyl disulfides from aryl and alkyl halides in the presence of copper using potassium 5-methyl-1,3,4-oxadiazole-2-thiolate as the base, ligand, and sulfur-transfer reagent.
- Soleiman-Beigi, Mohammad,Mohammadi, Fariba
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p. 7028 - 7030
(2013/01/15)
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- Synthesis of diaryl disulfides via the reductive coupling of arylsulfonyl chlorides
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A facile synthesis of diaryl disulfides from arylsulfonyl chlorides in the presence of triphenylphosphine has been developed.
- Kabalka, George W.,Reddy, Marepally Srinivasa,Yao, Min-Liang
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scheme or table
p. 7340 - 7342
(2010/03/01)
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- Kaolinitic clay catalyzed reaction of sulfur monochloride with aromatics: An efficient and high yield synthesis of symmetrical disulfides
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Kaolinitic clay efficiently catalyses the reaction of sulfur monochloride with arenes to yield symmetrical 4,4′ arene disulfides in a single step under heterogeneous phase.
- Vyas, Renu,Chanda, Bhanu,Sudalai
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- Reactions of Halothiophenes with Arene- and Hetarenethiols
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Reactions of halothiophenes with sulfanyl radicals generated from arene- and hetarenethiols at 140-200°C have been studied for the first time. The reactions result in replacement of halogen in 2-bromothiophene and 2,5-dichloro-, 2-bromo-5-chloro-, and 2,5-dibromothiophenes. The two halogen atoms in dihalothiophenes are replaced only by phenylthio radical generated from benzenethiol. 4-Methylbenzenethiol and naphthalene-1-thiol react with halothiophenes most selectively, yielding corresponding unsymmetrical sulfides. The reactions with 2-thiophenethiol are accompanied by self-condensation to give dithienyl sulfide. The reactions of arene- and hetarenethiols with halothiophenes provide a synthetic route to unsymmetrical sulfides of the thiophene series, which are difficult to obtain by other methods, and allow prediction of the behavior of other sulfanyl radicals in similar reactions.
- Deryagina,Papernaya,Klyba,Voronkov
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p. 1296 - 1298
(2007/10/03)
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- Addition of Heteroaromartic Thiols to Electron-Rich Alkenes: A Reversed Hetero Ene Reaction
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Benzothiophenethiol 1a reacted with styrene to give thiol 2a, which resulted from a ''reversed hetero ene reaction''.When the reaction was carried out in the presence of radical precursors, products deriving from radical addition to the styrene double bond of both thiols 1a and 2a formed.The reaction of 1a with butyl vinyl ether (BVE) gave the α,β-unsaturated dithioester 23a, deriving from the ''ene reaction product'' 22a through elimination of butanol.Similar behavior was exhibited by benzofuranthiol 1b, which reacted with styrene to give thiol 2b and with BVE to give the thionoester 23b.Both dithio- and thionoesters 23a,b were trapped as Diels-Alder adducts.In contrast, thiophenethiol 1c did not react with styrene and reacted with BVE to give an electrophilic 1:1 adduct.Ene reaction of thiols 1a,b occurred only with electron-rich olefins.In agreement, 1a did not react with hex-1-ene and methyl acrylate and reacted with dimethyl maleate to give a nucleophilic adduct.
- Montevecchi, Pier Carlo,Navacchia, Maria Luisa
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p. 6455 - 6459
(2007/10/03)
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- Free-Radical Addition of Heteroarenethiols and Heteroarylmethanethiols to Hexyne and Phenylacetylene. Chemical Behavior of the Transient β-Sulfanylvinyl Radicals
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The free-radical reaction of a number of heteroarenethiols (including 2-thiophene-, 2-benzofuran-, and 2-benzothiophenethiol) and heteroarylmethanethiols (including 2-furyl-, 2-thienyl-, and 3-thienylmethanethiol) with hex-1-yne and phenylacetylene has been investigated in benzene solution both at 100 deg C in the presence of AIBN and at room temperature in the presence of BEt3/O2.Under both of these conditions the above thiols generally furnished transient 2-sulfanylvinyl radicals through regioselective addition of corresponding sulfanyl radicals to the terminal alkyne carbon, but 2-benzofuranthiol failed to react with either alkyne in the presence of BEt3/O2 and unexpectedely gave 2-(ethylsulfanyl)benzofuran to a significant extent.The produced 2-(2-heteroarylsulfanyl)vinyl radicals largely preffered to undergo intramolecular H-abstraction reaction rather than intramolecular 5-endo cyclization onto the heteroaryl moiety of the 2-sulfanyl substituent.The 2-- and, especially, 2-vinyl radicals, besides H-abstraction, promptly underwent intramolecular 5-exo cyclization to give spiro radicals that interestingly underwent β-scission of their respective C-S and C-O bond resulting in ring cleavage of the original heteroaryl group.The 2-vinyl radicals did not exhibit any similar 5-exo cyclization, but did undergo a 6-endo cyclization to a very slight extent.
- Benati, Luisa,Capella, Laura,Montevecchi, Pier Carlo,Spagnolo, Piero
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p. 7941 - 7946
(2007/10/03)
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- RADICAL IONS 49. Redox Reactions of some Thiphene Derivatives
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Trimethylsilyl- and cyano-substituted thiophenes can be reduced in THF using potassium and the resulting radical anions can be characterized by their electron spin resonance spectra.Attempts to oxidize thiophene derivatives with low first ionization potentials to their radical cations using the ALCl3/H2CCl2 oxidizing system failed except for dithienyldisulfide, the radical cation of which rearranges under the reaction conditions to the one of dithieno-p-dithiin.The photoelectron and electron spin resonance spectroscopic assignments are supported by MNDO as well as parametrized HMO calculations.
- Bock, H.,Roth, B.
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p. 211 - 224
(2007/10/02)
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