作者:Richard Durr、Ottorino De Lucchi、Sergio Cossu、Vittorio Lucchini
DOI:10.1039/cc9960002447
日期:——
The hitherto unknown syn and anti isomers of benzotris(norbornadiene) 7, the only molecules that include both features known to lead to bond length alternation in benzenes, i.e. bicyclic ring strain and π–π interaction, have been synthesized from 2,3-dibromonorbornadiene using butyllithium and copper(I) iodide.
我们使用丁锂和碘化铜(I)从 2,3-二溴降冰片二烯合成了迄今未知的苯并三(降冰片二烯)7 的同分异构体和反异构体,它们是唯一包含已知会导致苯键长度交替的两个特征(即双环应变和 π-π 相互作用)的分子。