Reactions of Organic Anions; CXLIX.<sup>1</sup>Reactions of<i>gem</i>-Dichlorocyclopropanes Containing an Electron-Withdrawing Substituent with Organic Anions Generated with Phase-Transfer Catalysis
gem- Dichlorocyclopropanes 1 react with C-H, O-H and S-H acids in the presence of concentrated sodium hydroxide solution and a phase-transfer catalyst to give gem-disubstituted cyclopropanes 2 or chain products 3 in 44-95% yield.
Synthesis of Alkyl Aryl Sulfones via Reaction of N-Arylsulfonyl Hydroxyamines with Electron-Deficient Alkenes
作者:Yunhui Bin、Ruimao Hua
DOI:10.3390/molecules22010039
日期:——
Alkyl aryl sulfones were prepared in high yields via the reaction of N-arylsulfonyl hydroxylamines with electron-deficient alkenes. These reactions have the advantages of simplicity, easily available starting materials and mild reaction conditions.
Reductive addition to electron-deficient olefins with trivalent iodine compounds
作者:Hideo Togo、Masahiko Aoki、Masataka Yokoyama
DOI:10.1016/s0040-4020(01)88042-x
日期:1993.9
(Diacyloxyiodo)arene was treated with electron-deficientolefins in the presence of hydrogen donor such as 1,4-cyclohexadiene to give the reductive addition products via alkyl radical through the radical decarboxylative pathway in good yields. Moreover, this system was able to generate either alkoxycarbonyl radicals or alkyl radicals with [bis(alkoxyoxalyloxy)iodo]benzene, which was prepared from alcohol
Catalyst-free sulfonylation of activated alkenes for highly efficient synthesis of mono-substituted ethyl sulfones in water
作者:Yu Yang、Lin Tang、Sheng Zhang、Xuefeng Guo、Zhenggen Zha、Zhiyong Wang
DOI:10.1039/c4gc00932k
日期:——
A catalyst-free sulfonylation reaction of activated alkenes with sulfonyl hydrazides was efficiently developed under mild and environmentally benign conditions, in water without any ligand or additive. The reaction gave a range of structurally diverse mono-substituted ethyl sulfones with excellent yields, in which the by-product was nitrogen.