Conjugate Additions of a Simple Monosilylcopper Reagent with Use of the CuI·DMS Complex: Stereoselectivities and a Dramatic Impact by DMS
作者:Jesse Dambacher、Mikael Bergdahl
DOI:10.1021/jo048269e
日期:2005.1.1
reagent with DMS as the solvent is very useful with stericallyhindered (β,β-disubstituted) enones, and provides very high yields of the β-silylated 1,4-addition products. Since there is no oligomerization problem associated with the simple monosilylcuprate reagent, this reagent should be considered as a very useful 1,4-silyl donor to enals, enones, and enoates in conjugate addition reactions.
Employing the simple monosilylcopper reagent, Li[PhMe<sub>2</sub>SiCuI], in 1,4-addition reactions
作者:Jesse Dambacher、Mikael Bergdahl
DOI:10.1039/b210792a
日期:——
Conjugate addition reactions using the simple Li[PhMe2SiCuI] reagent to a variety of α,β-unsaturated carbonyl compounds is described; dimethyl sulfide from the purification of CuI plays a key role for very high yields as well as high stereoselectivities in the formation of β-silyl carbonyl compounds.