Tandem Michaël-Wittig Horner reaction one-pot synthesis of δ-substituted α,β-unsaturated esters
作者:Olivier Piva、Sébastien Comesse
DOI:10.1016/s0040-4039(97)01729-2
日期:1997.10
direct synthesis of δ-substituted α,β-unsaturatedesters from unsubstituted al dehydes or ketones has been accomplished in high yield by a taodem 1,4-addition and Wittig-Horner reaction. The Copper-enolate obtained after the first step was able to deprotonate the highly acidic phosphonate generating thus the two components necessary for the second coupling reaction.