Results 141 to 150 of about 1,145 (188)

Addition of organotellurium trihalides to acetylenes

Organometallics, 1991
(p-Methoxyphenyl)tellurium trichloride reacts with terminal acetylenes to give 1-chloro-1-organyl-2-[dichloro(p-methoxyphenyl)telluro] ethenes of Z configuration in good yields. The Z stereochemistry of the addition products suggests that the reaction occurs through a four-centered cyclic transition state.
Joao V. Comasseto, Helio A. Stefani, Andre Chieffi, Julio Zukerman-Schpector   +3 more
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Organotellurium Compounds in Organic Synthesis

Russian Chemical Reviews, 1987
The review gives a systematic account of the survey of data on the application of organic compounds of tellurium in the synthesis of hydrocarbons, halogeno-derivatives, and carbonyl compounds. The bibliography includes 94 references.
Igor D Sadekov, B B Rivkin, Vladimir I Minkin   +2 more
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Aspects of Organoselenium and Organotellurium Chemistry

Phosphorus, Sulfur, and Silicon and the Related Elements, 2005
The Chemistry of several condensed selenophenes, and tellurophenes (1–4) will be presented. The synthesis of mixed selenium-tellurium fulvenes (5) and generation of 2,4-bis-methyleneditelluretane (6) will be discussed.
M. V. Lakshmikantham, Emad Aqad, Desikan Rajagopal, Michael P. Cava   +3 more
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The Chemistry of Multidentate Organotellurium Ligands

Journal of Coordination Chemistry, 1992
The ligand chemistry of various multidentate tellurium donors has been developed during the last decade. These developments are reviewed and possibilities in this area projected.
Ajai K. Singh, Vinod Srivastava
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Role of Organotellurium Species in Tellurium Neuropathy

Neurochemical Research, 1998
Exposure of weanling rats to a diet containing 1% elemental tellurium causes segmental demyelination of peripheral nerve, and an inhibition of squalene epoxidase. This inhibition is thought to be the mechanism of action leading to demyelination. Tellurite appears to be the active inhibitory species in a cell-free system but the active species in vivo ...
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Generation of an Organotellurium(II) Cation

European Journal of Inorganic Chemistry, 2012
AbstractWe expected that the chemical trapping products of low‐coordinated tellurenyl cation species can also be kinetically stabilized by the Tbt or Bbt group. Recently, we have reported the halogenation reactions of Bbt‐substituted ditelluride, BbtTeTeBbt, leading to the formation of the TeII–TeIV mixed‐valent tellurenyl fluoride, BbtTeTe(F)2Bbt, and
Koh Sugamata, Takahiro Sasamori, Norihiro Tokitoh   +2 more
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Thermodynamics of organoselenium and organotellurium compounds

Russian Chemical Reviews, 1995
Experimental values of the enthalpies of formation (ΔHf°) and of the specific heat (Cp°) of the organic compounds of selenium and tellurium, are discussed, including their complexes with dialkylzinc and dialkylcadmium. Different forms of the methods of combustion enthalpy and of reaction calorimetry, used to determine ΔHf° values, are examined.
V I Tel'noy, M S Sheiman
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Organotellurium derivatives of dicarboxylic acids

Journal of Organometallic Chemistry, 1976
Abstract The freshly prepared sodium salts of ortho-phthalic acid and tetrabromo ortho-phthalic acid react with diaryltellurium dichlorides in chloroform to afford new dimeric organotellurium carboxylates, R2Te(C8X4O4)2 (X = H, Br). The new compounds contain fourteen membered rings and the detailed structure is discussed particularly in the light of ...
N. Dance, W.R. McWhinnie
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Antioxidative properties of organotellurium compounds in cell systems

Biochemical Pharmacology, 1998
The protective/antioxidative properties of diaryl tellurides were demonstrated in cellular systems of increasing complexity. In the presence of glutathione, bis(4-hydroxyphenyl) telluride (1a), bis(4-aminophenyl) telluride (1d) and bis(2-carboxyphenyl) telluride (1h) reduced by more than 50% t-butyl hydroperoxide-induced cell death in lung fibroblast ...
E, Wieslander, L, Engman, E, Svensjö, M, Erlansson, U, Johansson, M, Linden, C M, Andersson, R, Brattsand   +7 more
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Organotellurium scaffolds for mass cytometry reagent development

Organic & Biomolecular Chemistry, 2015
Tellurophenes are promising biocompatible mass tags.
Hanuel, Park, Landon J, Edgar, Matthew A, Lumba, Lisa M, Willis, Mark, Nitz   +4 more
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