Electrophilic fluorination of stereodefined disubstituted silyl ketene hemiaminals <i>en route</i> to tertiary α-fluorinated carbonyl derivatives
作者:Jian Qiang Huang、Zackaria Nairoukh、Ilan Marek
DOI:10.1039/c8ob00067k
日期:——
A highly diastereoselective synthesis of tertiary α-fluoro carbonyl compounds is reported in only two chemical steps from a simple alkyne through the reaction of stereodefined fully substituted silyl ketene hemiaminal derivatives with Selectfluor.
Asymmetric Synthesis of γ-Siloxyenamides via Chiral Auxiliary-Mediated Diastereoselective Coupling of Ynamides, Aldehydes, and Silane by Nickel Catalyst
作者:Yoshihiro Sato、Nozomi Saito、Tomoyuki Katayama
DOI:10.3987/com-10-s(e)122
日期:——
A nickel-catalyzed diastereoselective three-component coupling of optically active oxazolidinone-derived ynamides, aldehydes, and silane is described. The reaction proceeded via stereoselective formation of oxanickelacycle to give gamma-siloxyenamide derivatives in a highly diastereoselective manner.