芳香性
电泳剂
离子
化学
共轭体系
溴化物
亲核细胞
抗芳香性
计算化学
反应性(心理学)
有机化学
分子
催化作用
病理
替代医学
聚合物
医学
作者
Demelza J. M. Lyons,Reece D. Crocker,Marcus Blümel,Thành Vinh Nguyên
标识
DOI:10.1002/anie.201605979
摘要
The first three primary members of the non-benzenoid carbocyclic aromatic ion family, namely cyclopropenium, cyclopentadienide, and cycloheptatrienium (tropylium) ions, have planar cyclic structures with (4n+2)π electrons in fully conjugated systems. They fulfill Hückel's rule for aromaticity and hence possess extraordinary stability. Since the historic discovery of tropylium bromide in the late 19th Century, these non-benzenoid aromatic ions have attracted a lot of attention because of their unique combination of stability and reactivity. The charge on the aromatic ions makes them more prone to nucleophilic/electrophilic reactions than the neutral benzenoid counterparts. Within the last seven years, there has been a large number of investigations in utilizing aromatic ions to mediate organic reactions. This Review highlights these recent developments and discusses the potential of aromatic ions in promoting synthetically useful organic transformations.
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