Electrolytic Partial Fluorination of Organic Compounds. 17. Regiospecific Anodic Fluorination of Sulfides Bearing Electron-Withdrawing Substituents at the Position .alpha. to the Sulfur Atom

1995 ◽  
Vol 60 (11) ◽  
pp. 3459-3464 ◽  
Author(s):  
Toshio Fuchigami ◽  
Moriyasu Shimojo ◽  
Akinori Konno
Keyword(s):  
Organic Compounds ◽  
Sulfur Atom ◽  
Electron Withdrawing Substituents

scholarly journals Highly selective electrochemical fluorination of dithioacetal derivatives bearing electron-withdrawing substituents at the position α to the sulfur atom using poly(HF) salts

2015 ◽  
Vol 11 ◽  
pp. 85-91 ◽  
Author(s):  
Bin Yin ◽  
Shinsuke Inagi ◽  
Toshio Fuchigami
Keyword(s):  
Sulfur Atom ◽  
Nitrile Group ◽  
Amide Group ◽  
Sharp Contrast ◽  
Product Selectivity ◽  
Electrochemical Fluorination ◽  
Weak Electron ◽  
Electron Withdrawing Substituents

Anodic fluorination of dithioacetals bearing electron-withdrawing ester, acetyl, amide, and nitrile groups at their α-positions was comparatively studied using various supporting poly(HF) salts like Et3N·nHF (n = 3–5) and Et4NF·nHF (n = 3–5). In the former two cases, the corresponding α-fluorination products or fluorodesulfurization products were obtained selectively depending on supporting poly(HF) salts used. In sharp contrast, in the latter two cases, fluorination product selectivity was strongly affected by the electron-withdrawing ability of α-substituents: A dithioacetal bearing a relatively weak electron-withdrawing amide group provided a fluorodesulfurization product selectively while a dithioacetal having a strongly electron-withdrawing nitrile group gave the α-fluorination product predominantly regardless of the poly(HF) salts used.

scholarly journals Chemical Bonding and the Sulfur K X-Ray Spectrum

1965 ◽  
Vol 9 ◽  
pp. 354-364 ◽  
Author(s):  
D. W. Wilbur ◽  
J. W. Gofman
Keyword(s):  
Electronic Structure ◽  
Single Crystal ◽  
Organic Compounds ◽  
Sulfur Atom ◽  
Chemical Bonding ◽  
Proportional Counter ◽  
Pulse Height ◽  
X Ray ◽  
Pulse Height Analysis ◽  
Chemical States

AbstractAn investigation has been made of the relative Kβ intensities in different chemical states of the sulfur atom using the Kα lines, with appropriate corrections, to provide the intensity standards. Both inorganic and organic compounds were included in the study. The data for each compound appear to be reliable to about ± 0.5%, while the whole series of compounds shows a variation greater than 20% in the corrected Kβ/Kα ratios. Energies were also measured, particularly the Kα energies, and their shifts were studied relative to the Kβ, intensity shifts. The work was done with a plane, single-crystal, helium-path spectrometer with proportional counter and pulse-height analysis for detection. The results are indicative of the usefulness of the method both in clarifying an uncertain chemical state and in studying the electronic structure of the bonded atom.

Zur Synthese von phosphorhaltigen Heterocyclen mit metallorganischen Verbindungen / Synthesis of Phosphorus Containing Heterocycles with Metal Organic Compounds

1977 ◽  
Vol 32 (2) ◽  
pp. 229-233 ◽  
Author(s):  
Herbert W. Roesky ◽  
Hamid Zamankhan
Keyword(s):  
Coordination Number ◽  
Organic Compounds ◽  
Sulfur Atom ◽  
Cyclic Compound ◽  
Systematic Investigation ◽  
Phosphorus Containing ◽  
Metal Organic ◽  
Cyclic Compounds

CH3P(S)(NCO)2 reacts with [(CH3)3Si]2N-CH3, [(CH3)3SiNCH3]2CO and [(CH3)3Sn]3N to give the cyclic compounds 2a-2c. The structures are discussed on the basis of NMR and IR data. In 2 a and 2 b the (CH3)3Si-groups are easily and quantitatively replaced by protons with water under formation of (CH3)3Si-O-Si(CH3)3. By the reaction of CH3P(S)(NCO)2 with [(CH3)3Si]2S 4 is obtained, a cyclic compound with a sulfur atom of coordination number 2.FP(S)(NCS)2 was used to investigate the scope of these reactions. With [(CH3)3Si]2NCH3 and FP(S)(NCS)2 5 is obtained, which reacts with S2Cl2 to yield 6, a bridged disulfur compound. This method may be useful for the systematic investigation of new cyclic compounds.

scholarly journals Important of Azoles

2019 ◽  
pp. 6-14
Keyword(s):  
Organic Compounds ◽  
Sulfur Atom ◽  
Ring Structure ◽  
Derivatives Of

Azoles are one of a cyclic  derivatives  of chemical  heterocyclic chemical and organic compounds including g a five member di unsaturated ring structure composed of  bi  nitrogen atoms at position (3 and 4) and one sulfur atom at position (1).

scholarly journals Important of Azoles

2019 ◽  
Vol 1 (1) ◽  
pp. 6-14
Author(s):  
Medhat Mahamed Zakaria
Keyword(s):  
Organic Compounds ◽  
Sulfur Atom ◽  
Spectroscopic Properties ◽  
Ring Structure ◽  
Derivatives Of

Azoles are one of a cyclic  derivatives  of chemical  heterocyclic chemical and organic compounds including g a five member di unsaturated ring structure composed of  bi  nitrogen atoms at position (3 and 4) and one sulfur atom at position (1).        Most of prepared  work on the four thiadiazoles has been on the 1, 3, 4-thiadiazoles. Physical, theoretical, and spectroscopic properties have been reviewed .

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