82423-69-6Relevant articles and documents
Copper-catalyzed Ficini [2 + 2] cycloaddition of ynamides
Li, Hongyan,Hsung, Richard P.,Dekorver, Kyle A.,Wei, Yonggang
supporting information; experimental part, p. 3780 - 3783 (2010/10/21)
The Ficini [2 + 2] cycloaddition using N-sulfonyl-substituted ynamides is described, featuring the utility of CuCl2 and AgSbF6 as catalysts. This work represents the first successful example of ynamides participating in a thermal [2 + 2] cycloaddition with enones.
Addition of Ketene Trimethylsilyl Acetals to α,β-Unsaturated Ketones: A New Strategy for Michael Addition of Ester Enolates
RajanBabu, T. V.
, p. 2083 - 2089 (2007/10/02)
Trialkylsilyl ketene acetals in the presence of tris(dimethylamino)sulfonium difluorotrimethylsiliconate generate very potent carbon nucleophiles formally equivalent to ester enolates.In sharp contrast to the commonly used lithium enolates, these acetals
O-silylated ketene acetal chemistry; β-(alkoxycarbonyl)methyl O-silyl enolates, useful synthons for α-substituted-β-(alkoxycarbonyl)methylalkanones
Kita,Segawa,Haruta,Fujii,Tamura
, p. 3779 - 3782 (2007/10/02)
Conjugate addition of O-silylated ketene acetals 2 to α,β-unsaturated carbonyl compounds 1 in acetonitrile gave quantitative yields of the corresponding β-(alkoxycarbonyl)methyl O-silyl enolates 4. Site specific electrophilic substitutions of 4 yielded th
