<i>in-</i> and <i>out-</i>Cyclophanes Bearing Non-Hydrogen Bridgehead Substituents
作者:Steven Dell、Douglas M. Ho、Robert A. Pascal
DOI:10.1021/jo990727+
日期:1999.7.1
The syntheses of several cyclophanes containing a triaryl(element) "top" poised above a trisubstituted benzene "base" were carried out to install a non-hydrogen atom as a substituent on a bridgehead with an inwardly directed geometry. Most significantly, the tribenzo 6-fluoro-6-sila-2,10,19-trithia[5(6,14)][11]metacyclophane 2 was prepared by condensation of tris[2-(bromomethyl)phenyl]fluorosilane
进行几个含有三芳基(元素)“顶部”的三环芳基的合成,该“芳基”位于三取代苯的“碱”之上,以非氢原子作为取代基安装在具有向内指向几何结构的桥头上。最重要的是,三苯并6-氟-6-sila-2,10,19-三硫杂[5(6,14)] [11]间环phane 2是通过三[2-(溴甲基)苯基]氟硅烷与1 [ ,0.4%的3,5-三(巯基甲基)苯。X射线的结构图2表明,该环烷具有in-configuration。也就是说,氟原子在大环的内部,离基础芳香环的中心仅2.8。化合物2是包含非氢原子的极少数分子之一,并且2的氟代硅烷是已安装在任何分子中的最大官能团。