作者:Zissis Pechlivanidis、Henning Hopf、Jörg Grunenberg、Ludger Ernst
DOI:10.1002/ejoc.200800748
日期:2009.1
n]Paracyclophanes with bridges of equal and unequal length (m,n ≤ 4) undergo electrophilic aromatic substitution (Friedel–Crafts acylation, bromination) under very mild conditions as long as the bridge contains less than four atoms. Whenever there is a choice, the aromatic ring is attacked at the position closest to the shorter alkano bridge, which indicates that the transannular benzene moiety acts as