Back Cover: Remarkably High Reactivity of Pd(OAc)2/Pyridine Catalysts: Nondirected C[BOND]H Oxygenation of Arenes (Angew. Chem. Int. Ed. 40/2011)



original image

Palladium/pyridine catalyst systems for efficient, nondirected C[BOND]H oxygenation of simple arenes are described by M. S. Sanford and co-workers in their Communication on page 9409 ff. In the picture, Goldilocks discovers three bowls with pyridine, just as she discovers three differently sized bowls of porridge in the fairy tale. Only the “just right” amount of pyridine results in the efficient formation of PhOAc from PhH. Furthermore, the selectivity and substrate scope are improved.