Deoxygenation of sulfoxides and selenoxides with nickel boride
摘要:
The deoxygenations of a variety of acyclic sulfoxides and selenoxides have been reported with nickel boride in THF at 0-5 degrees C in nearly quantitative yields. The deoxygenations are proposed to proceed by an oxidative-addition and reductive-elimination mechanism. (C) 1998 Elsevier Science Ltd. All rights reserved.
描述了新型亚硒酸盐与磺酸盐的制备和表征。它们可以通过简单地将磺酸添加到亚硒酸盐溶液中并除去溶剂来容易地制备。在大多数情况下,它们是无色的晶体固体,比母体亚硒酸盐稳定得多,可以进行全面表征和X射线晶体学分析。它们还可以有效地将硫化物氧化为亚砜,而不会发生过氧化,并且可以干净地再生硒化物。它们的结构已通过1 H NMR光谱和X射线晶体学证实。
Additions of Dibenzyl Selenoxides and Selenonium Ylides to an Electron-Deficient Ethylene and Acetylene
作者:Seizo Tamagaki、Ryuji Akatsuka、Seizi Kozuka
DOI:10.1246/bcsj.50.1641
日期:1977.6
Dibenzyl selenoxides reacted with dimethyl acetylenedicarboxylate and tetracyanoethylene to give new ylides, while the reaction of selenonium ylides produced new ylides or cyclopropane derivatives.
Rapid Oxidation of Selenides, Selenoxides, Tellurides, and Telluroxides with Aqueous Sodium Hypochlorite
作者:Jitender M. Khurana、Bhaskar M. Kandpal、Yogendra K. Chauhan
DOI:10.1080/10426500307909
日期:2003.6
A simple and convenient procedure for the rapid oxidation of a variety of selenides, selenoxides, tellurides, and telluroxides with aqueoussodiumhypochlorite to selenones and tellurones, respectively, has been reported in dimethylformamide at ambient temperature.
UV-irradiation, diphenyl and dibenzyl selenoxides underwent deoxygenation and α-cleavage competitively to give selenides, and diselenides and others, respectively. A mechanism of bimolecular photodeoxygenation is proposed, since the yields of the photoproducts were dependent on the initial concentration of the selenoxides.