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Propriétés physico-chimiques de dérívés aromatiques pontés: [2,2], [2,2,2] et [2,2,2,2] metacyclophanes

par Flammang, Robert;Figeys, Hubert ;Martin, Ricardo
Référence Tetrahedron, 24, 3, page (1171-1185)
Publication Publié, 1968

Article révisé par les pairs

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Résumé :

[2.2], [2.2.2] and [2.2.2.2] metacylophanes have been obtained by the action of sodium and tetraphenylethylene on meta-dibromoxylylene. Examination of the UV and charge transfer complexes (TCNE) spectra indicates the existence of transannular interaction in these derivatives. Strong absorption bands (1400-400 cm- region) due to the distorsion of the benzene rings appear in the IR spectrum of [2.2]-metacylophane. NMR and mass spectra are also described. © 1968.