Results 161 to 170 of about 1,567 (201)
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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 +3 more
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Fluorophore-tagged organotellurium and –antimony assemblies
Inorganica Chimica Acta, 2019Abstract Diorganotellurium- and triorganoantimony dicarboxylates, [(p-MeOPh)2Te(RCOO)2] and [Ph3Sb(RCOO)2] (R = 9-C14H9 (1, 3), 9-C13H9O (2, 4)) have been synthesized and structurally characterized. The molecular structures of 1–4 show that (p-MeOPh)2Te/Ph3Sb moiety is covalently bonded with two oxygen atoms derived from two molecules of the ...
Ramalingam Thirumoorthi +1 more
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New Synthetic Reactions Using Some Organotelluriums
Phosphorus, Sulfur, and Silicon and the Related Elements, 1992Abstract Organotelluriums exhibit versatile reactivities of great interest, which include abundunt potentialities to be utilized for organic synthesis. In this paper some new reactions and syntheses of organotelluriums are discussed.
Fumio Ogura, Tetsuo Otsubo, Yoshio Aso
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Role of Organotellurium Species in Tellurium Neuropathy
Neurochemical Research, 1998Exposure 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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Organotellurium chemistry. The telluroxide elimination reaction
Journal of the Chemical Society, Chemical Communications, 1981In an effort to clarify the nature of the organotelluroxide elimination reaction, dodecyl-(4-methoxy-phenyl)tellurium oxide and dioxide were thermolysed; mechanisms involvnig tellurenic acid for the oxide and a 1,2-oxygen shift for the dioxide are proposed.
Hosull Lee, Michael P. Cava
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Microwave-Assisted Group-Transfer Cyclization of Organotellurium Compounds
The Journal of Organic Chemistry, 2004Primary- and secondary-alkyl aryl tellurides, prepared by arenetellurolate ring-opening of epoxides/ O-allylation, were found to undergo rapid (3-10 min) group-transfer cyclization to afford tetrahydrofuran derivatives in 60-74% yield when heated in a microwave cavity at 250 degrees C in ethylene glycol or at 180 degrees C in water. To go to completion,
Cecilia, Ericsson, Lars, Engman
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Some investigations of organotellurium chemistry
1972Diaryl ditellurides, Rote, (R = Ph, p-CH3,C6H4, p-CH30C6H4) , P-C2H5OC6H4, p-PhOC6H4 and 1-Naphthyl were prepared. The IR and Raman spectra of these compounds between 400-40 on™ | are presented. Detailed assignments of the spectra of PhoTe, are attempted. The tellurium-telluriun stretching frequency in all cases is identified between 167-187 cm’.
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New aspects in organotellurium halide chemistry
1996DUE TO COPYRIGHT RESTRICTIONS ONLY AVAILABLE FOR CONSULTATION AT ASTON UNIVERSITY LIBRARY AND INFORMATION SERVICES WITH PRIOR ...
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