作者:Ivan Aprahamian、Graham J. Bodwell、Jim J. Fleming、Greg P. Manning、Michael R. Mannion、Brad L. Merner、Tuvia Sheradsky、Rudolf J. Vermeij、Mordecai Rabinovitz
DOI:10.1021/ja040039u
日期:2004.6.1
(4) affords only reductive dimerization, and no two-electron reduction is observed. The reduction of [9](2,7) pyrenophane (5) and [10](2,7)pyrenophane (6) leads to reductive dimerization, followed by the formation of a dianionic anti-aromatic species, which eventually cleaves the solvent, THF-d(8). The similarity between the reduction of the latter systems and the reduction of pyrene (1) is discussed
一系列 [n](2,7) pyrenophanes (n = 7-10) 与锂或钾金属的还原表明系统中的应变,受系链长度控制,决定了还原产物的性质. [7](2,7)pyrenophane (2) 和 [2]metacyclo[2](2,7)pyrenophane (3) 的还原导致还原性二聚化,然后形成新的分子内 sigma 键,作为逃避应变的一种手段反芳香性。[8](2,7)Pyrenophane (4) 仅提供还原性二聚化,未观察到双电子还原。[9](2,7) pyrenophane (5) 和 [10](2,7)pyrenophane (6) 的还原导致还原性二聚化,随后形成双阴离子抗芳香族物质,最终裂解溶剂, THF-d(8)。讨论了后者系统的还原与芘 (1) 的还原之间的相似性。