Angewandte Chemie International Edition

Cover image for Vol. 53 Issue 41

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, ChemPlusChem, Zeitschrift für Chemie

46_40b/2007Inside Cover: Molecular Switches Flipped by Oxygen (Angew. Chem. Int. Ed. 40/2007)

Light, air, and heat suffice to flip a molecular switch. In their Communication on p. 7689 ff., T. Linker et al. show that oxidation of ortho-substituted bisarylanthracenes with singlet oxygen results in axial rotation by 180°. After cleavage of oxygen under mild conditions, the trans isomer can be regenerated by thermolysis. The full switching process requires only three steps, and oxygen is the only side product.

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