Tetrahedron

Benzannelated [9] and [13] annulenes: Formation, structural properties and the effect of benzannelation on the aromaticity of the (4n+ 2) π anionic sy

M Rabinovitz, I Willner, A Gamliel, A Gazit

Index: Rabinovitz,M. et al. Tetrahedron, 1979 , vol. 35, p. 667 - 673

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Citation Number: 9

Abstract

The synthesis of benzannelated [9] and [13] annulenenes is described, 1, 2: 3, 4- dibenzocyclononatetraene 3 and its diphenyl derivative 10 show upon deprotonation the initial formation of a non-planar partially delocalized anions 4 and 11 respectively, which undergo into the planar aromatic-diatropic dibenzocyclononatetraenyl anions 4a and 12. The immediate formation of the aromatic 1, 2: 5, 6-dibenzocyclononatetraenyl anion 14 ...