Bibliografías temáticas / Dithioethers

Literatura académica sobre el tema "Dithioethers"

Autor: Grafiati
Publicado: 18 de mayo de 2024

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Artículos de revistas sobre el tema "Dithioethers"

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Furukawa, Naomichi, Hisashi Fujihara y Akira Kawada. "Formation of Dithioether Diactions of Cyclic Dithioethers in Concentrated Sulfuric Acid". HETEROCYCLES 24, n.º 1 (1986): 17. http://dx.doi.org/10.3987/r-1986-01-0017.

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2

Kundu, Samir, Babli Roy y Basudeb Basu. "Silica: An efficient catalyst for one-pot regioselective synthesis of dithioethers". Beilstein Journal of Organic Chemistry 10 (7 de enero de 2014): 26–33. http://dx.doi.org/10.3762/bjoc.10.5.

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The development of a silica-promoted highly selective synthesis of 1,2 or 1,3-dithioethers via solvent-free one-pot tandem reactions of an allyl bromide with excess thiol at room temperature is described. The choice of silica gel, either pre-calcined or moistened with water, exhibited notable regioselectivity in the formation of dithioethers. Plausible mechanistic routes were explored and postulated.
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3

Moorhoff, Cornelis M., Wayne D. Cook, Fei Chen, Dat Nghiem, Carl Braybrook, San H. Thang, Jiazeng Sun, Timothy F. Scott y Christopher N. Bowman. "Synthesis of Acyclic, Symmetrical 3,3'-Allyl Dithioethers, from the Alkylation of 3-Mercapto-2-mercaptomethylprop-1-ene in the Presence of Sodium Hydride". Australian Journal of Chemistry 64, n.º 8 (2011): 1083. http://dx.doi.org/10.1071/ch11117.

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A novel method where 3,3′-allyl dithioethers have been prepared from 3-mercapto-2-mercaptomethylprop-1-ene and two mol equivalent of alkyl halide in the presence of two mol equivalent of sodium hydride has been developed. Using this method, bisepoxide, 2,2′-(2-methylenepropane-1,3-diyl)bis(sulfanediyl)bis(methylene)dioxirane (8) has been synthesized from epichlorohydrin, whereas potassium carbonate was unable to deliver this product. These 3,3′-allyl dithioethers can be utilized either as monomers, or with further chemical reactions transformed into more complex monomers, for photoplastic polymer networks.
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4

Yuan, Xiao, Xiaoju Tan, Na Ding, Yongchun Liu, Xiaoxiao Li y Zhigang Zhao. "NIS-promoted intermolecular bis-sulfenylation of allenamides via a two-step radical process: synthesis of 1,3-dithioethers". Organic Chemistry Frontiers 7, n.º 18 (2020): 2725–30. http://dx.doi.org/10.1039/d0qo00690d.

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5

Yu, Guodian, Yingcong Ou, Danyao Chen, Yuanting Huang, Yan Yan y Qian Chen. "Air-Induced Disulfenylation of Alkenes: Facile Synthesis of Vicinal Dithioethers". Synlett 31, n.º 01 (19 de noviembre de 2019): 83–86. http://dx.doi.org/10.1055/s-0039-1691493.

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A novel disulfenylation of alkenes with thiophenols and their corresponding disulfides by using air as the oxidant has been achieved. This transformation provides a facile and practical protocol for the synthesis of vicinal dithioethers under mild conditions.
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6

Chernova, Nina P., Nurgul A. Pirmanova, Tolebi Dzhienalyev y Andrei S. Potapov. "Simple Synthesis of Pyrazole-derived Dithioethers". Procedia Chemistry 15 (2015): 277–81. http://dx.doi.org/10.1016/j.proche.2015.10.044.

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7

Heinz, Benjamin, Moritz Balkenhohl y Paul Knochel. "Thiolation of Pyridine-2-sulfonamides using Magnesium Thiolates". Synthesis 51, n.º 23 (3 de septiembre de 2019): 4452–62. http://dx.doi.org/10.1055/s-0039-1690199.

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The thiolation of pyridine-2-sulfonamides using magnesium thiolates is reported. The ortho-functionalizations of these sulfonamides using TMPMgCl·LiCl (TMP = 2,2,6,6-tetramethylpiperidyl) followed by electrophilic quenching produced a range of 3-functionalized pyridine-2-sulfonamides, which were subsequently converted into the corresponding thioethers. Finally, symmetric or asymmetric diorganodisulfides were employed as electrophiles in a one-pot ortho-functionalization–thiolation procedure, leading to pyridine 2,3-disubstituted dithioethers.
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8

Flores-Santos, Leticia, Erika Martin, Montserrat Diéguez, Anna M. Masdeu-Bultó y Carmen Claver. "Novel chiral dithioethers derived from l-tartaric acid". Tetrahedron: Asymmetry 12, n.º 21 (noviembre de 2001): 3029–34. http://dx.doi.org/10.1016/s0957-4166(01)00504-3.

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9

Serita, Masanori, Makiko Tamaoki y Koichi Itoh. "Vibrational spectra of cyclic dithioethers and their dications. 1. Vibrational spectra and structures of 1,5-dithiacyclooctane and related cyclic dithioethers". Journal of Physical Chemistry 92, n.º 7 (abril de 1988): 1747–51. http://dx.doi.org/10.1021/j100318a010.

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10

Moorhoff, Cornelis M., Wayne D. Cook, Tara Schiller, Carl Braybrook y San H. Thang. "Synthesis of Symmetrical, Substituted (alkane-α,ω-diyl)(bis[3,3′-allyl dithioethers]) Monomers for Photoplastic Polymer Networks". Australian Journal of Chemistry 65, n.º 8 (2012): 1165. http://dx.doi.org/10.1071/ch12278.

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Novel symmetrical (alkane-α,ω-diyl)(bis[3,3′-allyl dithioethers]) compounds and their ether analogues, have been synthesised from (alkane-α,ω-diyl)bis([2-{chloromethyl}allyl]sulfane) precursors, for use in crosslinked polymers which exhibit photoplastic behaviour. Facile synthesis and purification of these monomers was achieved if the alkane-α,ω-diyl moiety had at least one oxygen atom in this linker. The number of sulfur atoms in these monomers was varied from four to two to zero to produce monomers which can be used to evaluate their importance on the photoplasticity behaviour.
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Tesis sobre el tema "Dithioethers"

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Saha, Sankar. "Synthesis, characterization of transition metal-dithioether complexes and catalytic applications in organic reactions". Thesis, University of North Bengal, 2019. http://ir.nbu.ac.in/handle/123456789/3640.

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Broeker, Jeffrey Lee. "Theoretical and experimental studies on oxidation and interactions of mono- and dithioethers and their derivatives". Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184506.

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The potential energy surface of naphtho (1,8-b,c) -1,5-dithiocin and its mono-, di-, tri-, and tetraoxides was analyzed by dynamic ¹H NMR spectroscopy, AM1 semiempirical calculations, and x-ray crystallography. The lowest energy conformers of these compounds in the solid state, the gas state, and in solution, as well as the energy barriers for the interconversion between their conformers are reported. The electronic structure of naphtho (1,8-b,c) -1,5-dithiocin was analyzed by the AM1 semiempirical method. An experimental method was developed to verify these calculations. Comparison of the relative intensities of the bands observed in the He I and He II photoelectron spectra of aromatic thioethers provides an effective means for assigning bands to ionizations from specific molecular orbitals. Such methodology confirmed the calculations which showed that naphtho (1,8-b,c) -1,5-dithiocin has a large sulfur-sulfur lone pair splitting of 1.6-2.0 eV. Dissolution of naphtho (1,8-b,c) -1,5-dithiocin-1-oxide in concentrated sulfuric acid produced the corresponding disulfide dication, which upon hydrolysis regenerated the sulfoxide. The mechanism of this reaction sequence was investigated using 2-monodeuterated naphtho (1,8-b,c) -1,5-dithiocin-1-oxide. This stereochemical probe showed that both the formation of the disulfide dication and its hydrolysis occurred with retention of stereochemistry at the sulfoxide sulfur. The molecular structure of naphtho (1,8-b,c) -1,5-dithiocin-1-oxide, determined by x-ray crystallographic methods, showed evidence of transannular interaction between the sulfur atoms. Vibronic analysis on naphtho (1,8-b,c) -1,5-dithiocin and naphtho (1,8-b,c) -1,5-dithiocin-1-oxide using the Hartree-Fock method with the STO-3G basis set showed no evidence of bond formation in naphtho (1,8-b,c) -1,5-dithiocin-1-oxide compared with naphtho (1,8-b,c) -1,5-dithiocin. Thus this transannular interaction in the sulfoxide must be due to electrostatic interaction and not incipent sulfurane formation. The mechanism of the photodecompositions of perester and aldehyde compounds with β substituted sulfur moieties was investigated. The photodecomposition of these compounds produced their corresponding alkenes without stereocontrol. These results suggest that the decompositions occur via a stepwise non-stereoselective mechanism. Flash photolysis of peresters β substituted with sulfonium salt groups was shown to produce thioether cation radicals, e.g., the 1,5-dithiocane cation radical. This demonstrated that the photodecomposition of β sulfonium salt peresters is potentially a powerful and novel method for making cation radicals.
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Capítulos de libros sobre el tema "Dithioethers"

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Jennings, J. Gregory y Gregory L. Powell. "Reactivity of Dithioethers Toward [Re2X8]2−". En Metal-Metal Bonds and Clusters in Chemistry and Catalysis, 323. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-2492-6_32.

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Actas de conferencias sobre el tema "Dithioethers"

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Potapov, Andrei, Nina Chernova, Tolebi Dzhienalyev y Andrei Khlebnikov. "Synthesis of Pyrazole-Derived Dithioethers Using in situ Generation of Dithiolate-Ions". En The 18th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2014. http://dx.doi.org/10.3390/ecsoc-18-a010.

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