<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