作者:Frédéric Elustondo、Venkaiah Chintalapudi、J. Stephen Clark
DOI:10.1002/hlca.201900161
日期:2019.9
A simple and efficient four‐step sequence for the synthesis of fused polyether arrays has been developed. Cyclic ethers are installed by sequential alkynyl ether formation, carbocupration, ring‐closing metathesis and hydroboration with acidic workup. Crucially, the alkene required for the subsequent ring formation by ring‐closing metathesis is present in the substrate but is masked in the form of a
已经开发了一种简单有效的四步法合成融合聚醚阵列。通过依次进行炔基醚的形成,碳键化,闭环复分解和在酸性条件下进行的硼氢化反应来安装环醚。至关重要的是,通过闭环复分解形成后续环所需的烯烃存在于基底中,但以乙烯基硅烷的形式被掩盖,从而阻止了侧链的竞争复分解。通过硼氢化反应和随后的酸介导的彼得森消除中间羟基硅烷,可从非反应性乙烯基硅烷生成反应性烯烃。