Attempted [2]Catenane Synthesis via a Quasi[1]catenane by a Templated Backfolding Strategy
作者:Luuk Steemers、Martin J. Wanner、Bart R. C. van Leeuwen、Henk Hiemstra、Jan H. van Maarseveen
DOI:10.1002/ejoc.201701325
日期:2018.2.21
construct a [2]catenane was attempted via a quasi[1]catenane showing an inverted spiro geometry. The template is covalently connected to the ketal-connected semi-perpendicular arranged linear precursors and spatially directs the sterically congested backfolding macrocyclizations that are required to give a quasi[1]catenane. So far, we are unable to hydrolyze the cyclic ketal to liberate the [2]catenane.
通过显示倒螺旋几何形状的准 [1] 链尝试构建 [2] 链的模板化回折概念。该模板与缩酮连接的半垂直排列的线性前体共价连接,并在空间上引导产生准 [1] 链烯所需的空间拥挤的回折叠大环化。到目前为止,我们无法水解环状缩酮以释放 [2] 链。