An Effective Synthesis of β- Selenium and β- Tellurium Carbonyl Compounds Via Reaction of Diaryldiselenides Or Diarylditellurides with α,β- Unsaturated Carbonyl Compounds Induced by Low-Valent Titanium
作者:Long-Hu Zhou、Yong-Min Zhang
DOI:10.1080/00397919908085796
日期:1999.2
Abstract P-Selenium and β-tellurium carbonylcompounds have been prepared in good yield by reaction of diaryldiselenides or diarylditelluride with α,β-unsaturated carbonylcompoundsinduced by TiC14 / Sm /THF system under mild reaction conditions.
Reductive Cleavage of Te-Te Bond in Ditellurides by Sm / ZrCl<sub>4</sub>System : a Novel Method for the Synthesis of β-Telluroesters (and Nitriles)
作者:Songlin Zhang、Yongmin Zhang
DOI:10.1080/00397910008087320
日期:2000.1
Abstract Diaryl ditellurides were conveniently reduced by a system consisting of samarium and zirconium tetrachloride in tetrahydrofuran to produce samarium aryltellurolates. This new tellurolate anion species reacted smoothly with α, β-unsaturated esters (and nitriles) to give β-telluroesters (and nitriles) in good yields.
Tian, Fengshou; Zhang, Songlin; Wang, Yulu, Journal of Chemical Research - Part S, 2003, # 6, p. 360 - 361
作者:Tian, Fengshou、Zhang, Songlin、Wang, Yulu
DOI:——
日期:——
Direct Michael addition to electron-deficient alkenes using diorganyl dichalcogenides (Te/S) and NaBH4/PEG-400
作者:Gelson Perin、Elton L. Borges、Thiago J. Peglow、Eder J. Lenardão
DOI:10.1016/j.tetlet.2014.08.101
日期:2014.10
Nucleophilic species of tellurium and sulfur were generated in situ from the reaction of the respective diorganyl dichalcogenides with NaBH4 in PEG-400 as solvent and selectively added to electron-deficient alkenes. Chalcogenolate anions were directly added at mild conditions by this simple procedure and in all cases furnished the respective Michael adducts in short reaction times and good yields. (C) 2014 Elsevier Ltd. All rights reserved.