Me3SiCl/Mg in HMPA was used for silylation of α,β-epoxy esters resulting in the corresponding β-silylated esters in a one pot reaction with reasonable yields.
Catalyst-Free and Solvent-Controlled Reductive Coupling of Activated Vinyl Triflates with Chlorotrimethylsilane by Magnesium Metal and Its Synthetic Application
Vinylsilanes were directly prepared from the corresponding vinyl triflates under magnesium-promoted reductive conditions in THF with no transition metal catalyst, and gem-bis-silylated compounds were obtained in NMP. Investigation of the redox potential of starting materials and products suggested that reductive coupling reactions of vinyl triflates might be controlled by the reduction potential. A
Magnesium-induced regiospecific C-silylation of suitably substituted enoates and dienoates
作者:Pintu K. Kundu、Sunil K. Ghosh
DOI:10.1016/j.tet.2010.09.001
日期:2010.10
cinnamates and β-silyl acrylates by a regiospecificreductive C-silylation using Mg/silyl chloride/DMF system at room temperature. These reductive C-silylation conditions have also been applied to δ-aryl substituted dienoates wherein silylation took place at the δ-position leading to the synthesis of single regioisomeric allylsilanes with very high stereoselectivity.
Facile synthesis of β-alkyl-substituted esters from α,β-unsaturated aldehydes
作者:Tsujiaki Hata、Masashi Nakajima、Mitsuo Sekine
DOI:10.1016/s0040-4039(01)86259-6
日期:1979.1
β-Alkyl-substituted carboxylates were synthesized in good yields from α,β-unsaturatedaldehydes by using the 1:1 carbonyl adducts with diethyl bis (trimethylsilyl) phosphite.
Electroreductive silylation of alpha, beta-unsaturated esters, nitriles and ketones in the presence of Me3SiCl using a reactive metal anode (Mg, Zn, Al) in an undivided cell afforded the corresponding beta-silyl compounds offering a valuable method for introduction of a silyl group into activated olefins.