Angewandte Chemie International Edition

Cover image for Vol. 56 Issue 23

Editor: Peter Gölitz, Deputy Editors: Neville Compton, Haymo Ross

Online ISSN: 1521-3773

Associated Title(s): Angewandte Chemie, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemistryOpen, ChemPhotoChem, ChemPlusChem, Zeitschrift für Chemie

Cover Picture (Angew. Chem. Int. Ed. Engl. 9/1985)

24_09/1985The cover page shows two macrocycles—a hexamer and an octamer—in which chiral spirobifluorene moieties are linked via crown ether structural groups. These well-defined compounds with 78 (m = 1) and 104 ring members (m = 3) are obtained together with the di- and the tetramer, as well as some analogues, under the conditions of phase transfer catalysis. There are very few known examples of such chiral, yet highly symmetrical molecules. They exhibit a wide range of possible applications. Further details are reported by V. Prelog et al. on page 792.

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