Synthesis of oxacyclic dienes via ring-closing enyne metathesis: difference in construction of eight-membered rings
作者:Lin-Lin Zhang、Wen-Zhen Zhang、Xiang Ren、Xin-Yan Tan、Xiao-Bing Lu
DOI:10.1016/j.tetlet.2012.04.107
日期:2012.6
A series of oxacyclic diene compounds, especially eight-membered products bearing a single oxygen atom which have not been reported previously, were successfully synthesized via ring-closing enyne metathesis using the second-generation Grubbs catalyst. In contrast to the construction of the five-membered rings, completely opposite substrate selectivity that methyl substituted internal alkyne showed
使用第二代Grubbs催化剂通过闭环烯炔复分解成功合成了一系列氧杂环二烯化合物,尤其是以前未报道的带有一个氧原子的八元产物。与五元环的构建相反,在构建八元环衍生物时,观察到完全相反的底物选择性,即甲基取代的内部炔烃显示出比末端炔烃更高的反应性。