Cover Picture: Enantioselective Kita Oxidative Spirolactonization Catalyzed by In Situ Generated Chiral Hypervalent Iodine(III) Species (Angew. Chem. Int. Ed. 12/2010)
Conformationally flexible C2-symmetric chiral iodosylarene, which has been rationally designed based on secondary n–σ* or hydrogen-bonding interactions, is a highly effective catalyst for the Kita oxidative spirolactonization. As described by K. Ishihara and co-workers in their Communication on page 2175 ff., this catalysis provides the highest enantioselectivity (up to 92 % ee) among previous chiral hypervalent iodine-catalyzed reactions.
Read Full Text | Table of Contents
Also of InterestCarbon Nanomaterials Carbon nanotubes are frequently employed in biosensors, but what about single layers of carbon atoms—the emergent material graphene? In the Review on page 2114 ff., F. Braet et al. compare the two carbon allotropes with respect to their use in biosensors.
Hybrid Composites In their Communication on page 2140 ff., S. H. Yu and co-workers describe how the unique microstructures of seashell nacre can be mimicked by biologically inspired organic–inorganic hybrid films, which display high tensile strength.
Nanoparticle Catalysts Nanocomposites formed from platinum nanoparticles on the surface of a larger gold nanoparticle are much more active in the oxidation of formic acid than pure platinum catalysts, as G. Yin, Y. Lin et al. show on page 2211 ff. This system shows promise in formic acid fuel-cell applications.
|
Inside Cover: Nucleophilic Phosphinidene Complexes: Access and Applicability (Angew. Chem. Int. Ed. 12/2010)
Nucleophilic phosphinidene complexes, which are isoelectronic to well-known carbene complexes, are establishing themselves as useful reagents for organic synthesis. In their Minireview on page 2102 ff., K. Lammertsma et al. give an overview of the different synthetic pathways to this class of phosphorus reagents and describe their potential applications for a wide range of chemical conversions.
Read Full Text | Table of Contents