作者:Mugio Nishizawa、Tokuko Shigaraki、Hiroko Takao、Hiroshi Imagawa、Takumichi Sugihara
DOI:10.1016/s0040-4039(98)02551-9
日期:1999.2
Novel condensation of ketones with homoallyl alcohols catalyzed by Hg(OTf)2 has been developed, generating a 6-membered ring ether alcohol, bisether, and olefins. The reaction is initiated b hemiacetal formation, and cyclization of the resulting oxonium cation provides the 6-membered ring carbocation as a common intermediate. Thus, it is a catalytic Prins-type condensation of non-activated homoallyl
已开发出由Hg(OTf)2催化的酮与均烯丙基醇的新型缩合反应,生成六元环醚醇,双醚和烯烃。该反应通过半缩醛的形成而引发,并且所形成的氧鎓阳离子的环化提供了6-元环碳阳离子作为常见的中间体。因此,它是未活化的均烯丙基醇和普通酮的催化普林斯型缩合反应。