55214-86-3Relevant academic research and scientific papers
CONFORMATIONAL CONSEQUENCES OF INTRAMOLECULAR HYDROGEN BONDING BY OH TO THE DIRECTIONAL LONE-PAIR OF SULFUR IN DERIVATIVES OF METHYL PHENYL SULFIDE, DIPHENYL SULFIDE, AND DIPHENYL DISULFIDE
Schaefer, Ted,Salman, Salman R.,Wildman, Timothy A.,Clark, Peter D.
, p. 342 - 348 (1982)
Complete spectral parameters for the 1H nmr spectra of 2-hydroxyphenyl methyl sulfide, 2, 2-hydroxyphenyl phenyl sulfide, 3, bis(2-hydroxy-3-tert-butyl-5-methylphenyl) sulfide, 4, and bis(2-hydroxyphenyl)disulfide, 5, are reported for CCl4 solu
Regioselective Ortho‐C–H sulfenylation of free phenols catalyzed by Co(II)-immobilized on silica-coated magnetic nanoparticles
Khaef, Sepideh,Rostami, Abed,Khakyzadeh, Vahid,Zolfigol, Mohammad Ali,Taherpour, Avat Arman,Yarie, Meysam
, (2020/01/22)
Fe3O4?SiO2-UT?CoII is prepared by the silica-coated magnetic nanoparticles, urea-triazole, and CoCl2. This organic-inorganic hybride composite showed a good to excellent catalytic activity toward regioselective ortho-sulfenylation of free phenols and naphthols using pivalic anhydride as a directing group, also K2S2O8 and PPh3 were employed as oxidant and additive respectively. The newly synthesized catalyst was fully characterized by using different techniques such as FT-IR, TGA, DTG, TEM, SEM, EDS, ICP and VSM analyses. The competitive price, accessibility and lower toxicity of cobalt compared to expensive transition metals using for C–H bond activation and functionalization constitute precious advantages for this method. Moreover, this heterogeneous catalyst could be magnetically recovered and reused without significant loss of its catalytic activity after five cycles.
Achieving Nickel Catalyzed C-S Cross-Coupling under Mild Conditions Using Metal-Ligand Cooperativity
Sikari, Rina,Sinha, Suman,Das, Siuli,Saha, Anannya,Chakraborty, Gargi,Mondal, Rakesh,Paul, Nanda D.
, p. 4072 - 4085 (2019/04/01)
A simple and efficient approach of C-S cross-coupling of a wide variety of (hetero)aryl thiols and (hetero)aryl halides under mild conditions, mostly at room temperature, catalyzed by well-defined singlet diradical Ni(II) catalysts bearing redox noninnocent ligands is reported. Taking advantage of ligand centered redox events, the high-energetic Ni(0)/Ni(II) or Ni(I)/Ni(III) redox steps were avoided in the catalytic cycle. The cooperative participation of both nickel and the coordinated ligands during oxidative addition/reductive elimination steps allowed us to perform the catalytic reactions under mild conditions.
Phenyldithiocarbamates: Efficient Sulfuration Reagents in the Chan–Lam Coupling Reaction
Cheng, Yu,Liu, Xing,Dong, Zhi-Bing
, p. 815 - 820 (2018/02/21)
The Chan–Lam coupling reaction starting from phenyldithiocarbamates and phenylboronic acids is reported. To avoid using the volatile, hazardous, and foul-smelling thiols, which are sometimes expensive and not sufficiently available, phenyldithiocarbamates can be employed. They are demonstrated to be good sulfuration reagents in the Chan–Lam coupling to prepare biaryl sulfides. By using this protocol, dithiocarbamate substrates with a wide range of functional groups including electron-rich and electron-deficient ones are explored to obtain the desired substituted biaryl sulfides smoothly. This method is ligand-free, has a broad substrate scope, enables good yields, and is easy to perform. It provides a facile and convenient preparation of biaryl sulfides.
SULFONIUM COMPOUND, RESIST COMPOSITION, AND PATTERN FORMING PROCESS
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Paragraph 0172-0173, (2018/04/20)
A sulfonium compound having formula (1) is provided wherein R1, R2 and R3 are a C1-C20 monovalent hydrocarbon group which may contain a heteroatom, p=0-5, q=0-5, and r=0-4. A resist composition comprising the sulfonium compound is processed by lithography to form a resist pattern with improved LWR and pattern collapse.
SINGLE-STEP SYNTHESIS METHOD OF ARYL THIOL AND APPLICATION THEREOF
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Paragraph 0038; 0039; 0083; 0087; 0089; 0091, (2017/09/02)
The present invention relates to a single-step synthesis method of aryl thiol, and more specifically, to a method of synthesizing aryl thiol in a single-step by making aryl halide react with alkane dithiol in the presence of a transition metal catalyst. According to the present invention, a single-step synthesis method using the transition metal catalyst, the synthesis method which is capable of synthesizing aryl thiol from aryl halide at a high yield, can be provided. Various aryl halides may be applied to the synthesis method. Further, the synthesis method has advantages that an easily usable reagent may be used, operations are simple, and reactions can be performed under mild conditions. In addition, the synthesized aryl thiol may be used in the synthesis of advanced molecules such as diaryl sulfides and benzothiophenes.COPYRIGHT KIPO 2017
Nickel-Catalyzed C–S Coupling: Synthesis of Diaryl Sulfides Starting from Phenyldithiocarbamates and Iodobenzenes
Liu, Xing,Cao, Qiang,Xu, Wan,Zeng, Meng-Tian,Dong, Zhi-Bing
, p. 5795 - 5799 (2017/10/23)
A nickel-catalyzed C–S bond-formation protocol for the synthesis of diaryl sulfides is described. In a reaction catalyzed by NiCl2, phenyldithiocarbamates react with iodobenzenes to give diaryl sulfides smoothly in good to excellent yields (66–93 %). The catalyst is cheap, the reaction is easy to carry out, the substrate scope is broad, and the yields are good. Thus, this gives an alternative way to prepare diaryl sulfides.
Reaction of Arynes with Vinyl Sulfoxides: Highly Stereospecific Synthesis of ortho-Sulfinylaryl Vinyl Ethers
Li, Yuanming,Studer, Armido
, p. 666 - 669 (2017/02/10)
The reaction of in situ generated arynes with aryl vinyl sulfoxides provides ortho-arylsulfinylaryl vinyl ethers via aryne σ-bond insertion into the S-O-bond and concomitant stereospecific S-O-vinyl migration. The cascade allows preparing di- or trisubsti
Efficient method for selectively synthesizing 2-hydroxybenzene sulfur ether compound
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Paragraph 0017; 0018, (2016/10/08)
The invention provides an efficient method for selectively synthesizing a 2-hydroxybenzene sulfur ether compound. The method includes the steps of making a thiophenol compound shown in the formula (I) and an aryl halide compound shown in the formula (II) sufficiently react in a reaction medium with dimethyl sulfoxide as solvent under the effects of a catalyst, ligand and alkali carbonate to prepare a reagent, and conducting postprocessing on the reagent to prepare the 2-hydroxybenzene sulfur ether compound, wherein cuprous iodide serves as the catalyst, enaminone serves as the ligand, and cesium carbonate serves as the alkali carbonate. R1 in the formula (I) or the formula (II) is selected from one of alkyl and halogen. R2 in the formula (II) or the formula (III) is selected from one of methoxyl, halogen and trifluoromethyl. Raw materials can be easily obtained, the synthesis condition is gentle, the chemical selectivity is high and controllable, cost is saved, the requirements for devices are low, solvent and water can dissolve each other, postprocessing is convenient, the catalytic system is wide in adaptability, and the method is suitable for large-scale industrialized production.
The convenient synthesis and reaction of 2-(arylthio)phenols under ligand-free conditions: arylthioquinone preparation through cascade C–H functionalization and oxidation from arylthiols and aryl iodides
Wang, Dawei,Yu, Xiaoli,Wang, Likui,Yao, Wei,Xu, Zhaojun,Wan, Huida
, p. 5211 - 5214 (2016/11/13)
A convenient and simple method for copper-catalyzed synthesis of 2-(arylthio)phenols through C–H functionalization of arylthiols and aryl iodides was developed under ligand-free conditions without nitrogen protection. In addition, arylthioquinone derivatives were very easily prepared for one more step of oxidation with moderate to good yields. This provide an alternative and efficient way to 2-(arylthio)phenols and arylthioquinone derivatives smoothly without using ligands and nitrogen protection or expensive arylboronic acids.
