A convenient synthesis of enamides and dienamides by Horner-Wittig and Wadsworth-Emmons reactions
作者:Axel Couture、Eric Deniau、Pierre Grandclaudon
DOI:10.1016/s0040-4039(00)60323-4
日期:1993.2
Various N-acyl-N-alkyl-1-amino-alkenes and −1,3-dienes have been efficiently prepared by reacting aldehydes or ketones 3 with N-alkyl-N-(diphenylphosphinoyl)methyl and −N-(diethoxyphosphoryl)methyl carboxamides 1, 2.
A convenient synthesis of N -vinyl enamides via the lithiation and ring-opening reaction of 2-phenyl-2-oxazolines
作者:Yi Xu、Xiao-Yu Liu、Zi-Qi Wang、Liang-Fu Tang
DOI:10.1016/j.tetlet.2017.03.080
日期:2017.5
A simple and efficient synthesis of N-vinyl enamides via the lithiation and ring-openingreaction of 2-phenyl-2-oxazolines with lithium diisopropylamide at room temperature has been developed. This method is especially suitable for the synthesis of multifunctional enamides. Good yields have been obtained when the reactions were amplified to gram scale.