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.
THE TRANSYLIDATION REACTION OF A SELENONIUM YLIDE WITH SULFIDES
作者:Seizo Tamagaki、Katsuyuki Tamura、Seizi Kozuka
DOI:10.1246/cl.1977.725
日期:1977.7.5
Several dialkylsulfonium ylides were obtained almost quantitatively by the transylidation reaction of dibenzylselenonium cyano(methoxycarbonyl)methylide with alkyl sulfides in the presence of CS2.
The treatment of selenonium N-p-toluenesulfonimides and selenoxides except diphenyl selenoxide with active methylene compounds readily afforded the corresponding stable selenonium ylides in relatively high yields.
The Reaction of Dibenzylselenonium Ylides with Various Acids
作者:Seizo Tamagaki、Katsuyuki Tamura、Seizi Kozuka
DOI:10.1246/bcsj.51.333
日期:1978.1
Dibenzylselenonium cyano(methoxycarbonyl)methylide and dibenzylselenonium dicyanomethylide react readily with strong acids at room temperature, giving 1,3-diselena compounds and active methylene compounds.