85055-59-0Relevant academic research and scientific papers
A new method for the synthesis of organotellurium compounds by the use of reductive cleavage of the tellurium-tellurium bond with lanthanum metal
Nishiyama, Yutaka,Okada, Mitsuo,Nishino, Toshiki,Sonoda, Noboru
, p. 341 - 343 (2007/10/03)
It was confirmed that lanthanum metal is an efficient reagent for the reductive cleavage of the tellurium-tellurium bond of ditelluride. Alkyl phenyl tellurides were prepared by the reaction of diphenyl ditelluride with primary and secondary alkyl halides
Substituent Effects and Stereochemistry in 125Te NMR Spectroscopy. Diorganyltellurium Dihalides and Some Tellurides and Ditellurides
Duddeck, Helmut,Biallass, Armin
, p. 303 - 311 (2007/10/02)
125Te, 19F and 13C NMR data for 33 compounds containing tellurium substituents are presented.The 125Te chemical shifts in (PhTeCl2)R compounds are between δ=878 and 1023; in corresponding (PhTeF2)R compounds they are 220 to 360 ppm larger.Effects of subst
Nucleophilic Reactions of Acetals, Alkyl Sulfonates, and Oxiranes with Diisobutylaluminum Benzenetellurolate
Sasaki, Kazuaki,Mori, Toshiharu,Doi, Yoshitaka,Kawachi, Akinori,Aso, Yoshio,et al.
, p. 415 - 418 (2007/10/02)
Diisobutylaluminum benzenetellurolate was proved to be an effective nucleophilic reagent toward acetals, alkyl sulfonates, and oxiranes to give the corresponding tellurides.These reactions showed the characteristics of an SN2 type.When the substitution reactions were sterically hindered, olefins and allylic alcohols were obtained from alkyl sulfonates and oxiranes, respectively.
Oxygen-Induced Transmetallation of Organoboranes with Diphenyl Ditelluride
Abe, Taro,Aso, Yoshio,Otsubo, Tetsuo,Ogura, Fumio
, p. 1671 - 1674 (2007/10/02)
Diphenyl ditelluride rapidly reacted with trialkylboranes in the presence of oxygen to give alkyl phenyl tellurides in high yields.The facile rection proceeds via a free-radical mechanism induced by a stoichiometric amount of oxygen.A combination of this transmetallation with hydroboration provides an alternative method for hydrotelluration of olefins.
Reactions of Alkylmercurials with Heteroatom-Centered Acceptor Radicals
Russell, Glen A.,Ngoviwatchai, Preecha,Tashtoush, Hasan I.,Pla-Dalmau, Anna,Khanna, Rajive K.
, p. 3530 - 3538 (2007/10/02)
The relative reactivities of alkylmercury halides toward PhS., PhSe., or I. decrease drastically from R = tert-butyl to R = sec-alkyl to R = n-butyl, indicative that R. is formed in the rate-determining step in the attack of these radicals upon RHgCl.The alkyl radicals thus formed will enter into chain reactions in which a heteroatom-centered radical (A.) is regenerated from substrates such as RS-SR, ArSe-SeAr, ArTe-TeAr, PhSe-SO2Ar, Cl-SO2Ph; ZCH=CHA (A = Cl, I, SPh, SO2Ph); or PhCCHA (A = I, SPh, SO2Ph). β-Styrenyl (PhCH=CHA, Ph2C=CHA) and β-phenethynyl (PhCCA) systems with A = I, Br, SO2Ph also enter into chain reactions with mercury(II) salts with the ligands PhS, PhSe, PhSO2, or (EtO)2PO.The relative reactivities of a series of reagents toward t-Bu. and of PhCH=CHA, Ph2C=CHA, and PhCCA toward c-C6H11. are reported as well as the regioselectivity of t-Bu. attack observed for 1,2-disubstituted ethylenes (ZCH=CHA) with Z and A from the group Ph, Cl, Br, I, SO2Ph, SPh, Bu3Sn.Reactions of (E)- and (Z)-PhCH=CHI or MeO2CCH=CHI with t-Bu. or c-C6H11. occurred in a regioselective and stereospecific (retention) manner.Reactions of (E)- and (Z)-ClCH=CHCl occurred in a nonstereospecific manner in which the E/Z product ratio increased with the bulk of the attacking radical.A similar effect on the E/Z product ratios was observed for (Z)-MeO2CCH=CHCl.
