73476-18-3Relevant academic research and scientific papers
A general approach to iridoids by applying a new Julia olefination and a tandem anion-radical-carbocation crossover reaction
?ehová, Lucie,Dra?ínsky, Martin,Jahn, Ullrich
supporting information, p. 9612 - 9621 (2016/10/22)
A unified, asymmetric approach to the total synthesis of naturally occurring iridoids is presented. The synthesis features a recently discovered ortho → α transmetalation of alkyl aryl sulfone carbanions, thus enabling Julia reactions, by which so far har
Activation of Si-Si bonds for copper(I)-catalyzed conjugate silylation
Iannazzo, Laura,Molander, Gary A.
, p. 4923 - 4926,4 (2020/08/24)
Several alkyl- and vinylsilanes were prepared through the copper(I)-catalyzed conjugate silylation of α,β-unsaturated compounds. Optimal reaction conditions were first investigated to realize the conjugate addition of a nucleophilic silicon species to poo
β,β-disilylated sulfones as versatile building blocks in organic chemistry - A new sulfonyl carbanion transmetalation
Puget, Bertrand,Jahn, Ullrich
supporting information; experimental part, p. 2579 - 2582 (2010/12/20)
1,3-Bis(trimethylsilyl)propyl phenyl sulfone undergoes, in contrast to all reported sulfones bearing α-hydrogen atoms, an initial ortho metalation to an aryllithium at low temperature, which transmetalates quantitatively to the corresponding α-sulfonyl or
Bu2SnIH-promoted proximal bond cleavage of methylenecyclopropanes and successive radical cyclization and/or Pd-catalyzed coupling reaction
Hayashi, Naoki,Hirokawa, Yusuke,Shibata, Ikuya,Yasuda, Makoto,Baba, Akio
, p. 2912 - 2913 (2008/09/20)
The unprecedented regioselective hydrostannation of methylenecyclopropanes to give vinyltins was achieved using dibutyliodotin hydride (Bu2SnIH), which could be applied to intramolecular radical cyclization. Copyright
A new silicon-mediated elimination-rearrangement
Menichetti, Stefano,Stirling, Charles J. M.
, p. 1511 - 1515 (2007/10/03)
Treatment of trimethylsilylethanes bearing α-phenyl groups and β-phenylthio, phenylsulfonyl or cyano groups with LDA causes elimination-rearrangement mediated by the β-carbanionic species. Mechanistic conclusions are based on isotopic labelling experiment
Sulfone reagents in organic synthesis. VI. Sulfonyl- and silyl-substituted hydrocarbons as versatile carbanion precursors in organic synthesis
Eisch, John J.,Behrooz, Mohammad,Dua, Suresh K.
, p. 121 - 136 (2007/10/02)
The basic organometallic chemistry of β-silyl-substituted acetylenic, vinylic and alkyl sulfones has been investigated, with attention being given to metallation, carbometallation and the chemical reduction of carbon-carbon unsaturation. 2-Trimethylsilylvinyl and 2-trimethylsilylalkyl sulfones underwent smooth and stereoselective lithiation with RLi on the carbon α to the sulfonyl group. Carbometallation of vinyl sulfones could be achieved with RMgX or LiCuR2, but acetylenic sulfones carbometallated smoothly only with LiCuR2; with RMgX or RLi, these acetylenes underwent alkyldesulfonylation. The utility in synthesis of these metallo derivatives of sulfonyl-silyl-hydrocarbons is discussed and their value in elaborating carbon skeletons is illustrated for the preparation of alkenes, allenes, carbocycles and stereo-defined vinyl sulfones.
PRACTICAL SYNTHESES OF ALLYLSILANES FROM 1-BENZENESULFONYL-2-TRIMETHYLSILYLETHANE
Hsiao, C-N.,Shechter, H.
, p. 1963 - 1966 (2007/10/02)
The methanesulfonates of the adducts of aldehydes and ketones with 1-(1-benzenesulfonyl-2-trimethylsilyl)ethyllithium are converted by sodium-amalgam to allylsilanes.
