reaction. Shortening the alkyloxy bridging unit of these macrocycles increases the bend in the p-terphenyl unit, as well as the strain energy (SE) of the central para-phenylene ring system. For the first time, incremental increases in SE of the macrocyclic structure of this class of benzenoid compounds have been investigated in the context of π-extension to strained polycyclic aromatic hydrocarbon systems
已经合成了一系列弯曲的含对叔丁基的大环,然后进行区域选择性
溴化,芳基化,然后进行基于Scholl的环脱氢反应。这些大环的烷氧基桥连单元的缩短增加了对-三
联苯单元的弯曲,以及中心对-亚苯环体系的应变能(
SE)。第一次,利用Scholl反应,在π扩展到应变多环
芳烃体系的π扩展的背景下,研究了这类苯环化合物的大环结构
SE的增量增加。