Cover Picture: (Aryl)(phosphanyl)Carbene: Ground‐ and Excited‐State Reactions (Eur. J. Org. Chem. 11/2003)
The cover picture shows ground-state as well as excited-state reactions for a stable (aryl)(phosphanyl)carbene. Cyclopropanation and carbene coupling reactions demonstrate the ambiphilic character of the ground state while the 1,2-migration reaction only occurred under irradiation and thus involves an excited state of the stable carbene. Details are discussed in the article by D. Bourissou and G. Bertrand et al. on p. 2039 ff. Thanks are due to Mr. Chistian Pradel for his help in generating this cover illustration.