Indium(III) Chloride Catalyzed Conjugate Addition Reaction of Alkynylsilanes to Acrylate Esters
作者:Yan-li Xu、Ying-ming Pan、Pei Liu、Heng-shan Wang、Xiao-yan Tian、Gui-fa Su
DOI:10.1021/jo202628c
日期:2012.4.6
A novel and efficient procedure for the synthesis of δ,γ-alkynyl esters by the conjugateaddition of alkynylsilanes to acrylate esters in the presence of a catalytic amount of indium(III) chloride has been developed. This method provides a rapid and efficient access to substituted δ,γ-alkynyl esters.
opening/alkynylation of cyclopropanol by employing inexpensive and commercially available terminal alkyne is developed. The reactions proceeded efficiently to afford synthetically useful alk-4-yn-1-ones in moderate to good yields with good functional group tolerance. Control experiments showed that the reaction presumably proceeds via the formation of intermediates of copper homoenolate and/or alkynylcopper