Trisannelated benzenes. Preparation, properties, and photoelectron spectra

E Heilbronner, B Kovac, W Nutakul…

Index: Heilbronner, E.; Kovac, Branka; Nutakul, Wutichai; Taggart, Austin D.; Thummel, Randolph P. Journal of Organic Chemistry, 1981 , vol. 46, p. 5279 - 5284

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Citation Number: 23

Abstract

The preparation of tricyclobutabenzene and its next two higher homologues is described. The synthetic approach involves the [4+ 21 cycloaddition of dimethyl 1, 2- cyclobutenedicarboxylate to an appropriate diene followed by hydrolysis of the ester functions, bisdecarboxylation, and aromatization. The NMR, ultraviolet, and photoelectron spectra of these small-ring trisannelated benzenes are presented. The properties of all ...