An Annulation Reaction for the Synthesis of Cross-Conjugated Triene-Containing Hydroindanes from Acyclic Precursors
作者:Xiayun Cheng、Glenn C. Micalizio
DOI:10.1021/ol502496d
日期:2014.10.3
In efforts directed toward the synthesis of seco-prezizaane sesquiterpenoids, a stereoselective annulation reaction has been developed between 4-hydroxy-1,6-enynes and TMS-alkynes that delivers cross-conjugated triene-containing hydroindanes. Contrary to previous reports, enyne substrates bearing two propargylic ethers enable the presumed organometallic intermediate to be trapped by double elimination
在致力于合成 seco-prezizaane 倍半萜类化合物的过程中,在 4-羟基-1,6-烯炔和 TMS-炔烃之间开发了立体选择性环化反应,可提供交叉共轭的含三烯的氢茚。与之前的报道相反,带有两个炔丙基醚的烯炔底物能够通过双重消除来捕获假定的有机金属中间体。来自这种环化的产物进行基于 Diels-Alder 的二聚化的趋势被用来完成一个两步的复杂性生成序列,并在通往密集功能化的碳环和杂环系统的途中。