Enantioselective and site-specific copper-catalyzed reductive allyl–allyl cross-coupling of allenes
作者:Guoxing Xu、Bin Fu、Haiyan Zhao、Yanfei Li、Ge Zhang、Ying Wang、Tao Xiong、Qian Zhang
DOI:10.1039/c8sc04505d
日期:——
A copper-catalyzed asymmetric reductive allyl–allyl cross-coupling reaction of allenes with allylic phosphates wherein allenes were used as allylmetal surrogates has been achieved for the first time. This protocol provides an efficient and straightforward route to optically active 1,5-dienes in a highly enantioselective and site-specific fashion. Furthermore, all-carbon quaternary stereogenic centers
首次实现了铜催化的丙二烯与烯丙磷酸酯的不对称还原烯丙基-烯丙基交叉偶联反应,其中丙二烯用作烯丙基金属替代物。该协议以高度对映选择性和位点特异性的方式提供了一种高效、直接的光学活性 1,5-二烯路线。此外,还可以用该协议构建全碳四元立体中心。产品的多功能性通过对映体富集的 1,5-二烯的一系列进一步转化得到证明。