On the Cover

Power to phosphines Phosphines are one of the most utilized types of ligands in catalysis and their advancement is indispensable for further developments in this field. In their Communication on page 12859 ff., V. H. Gessner et al. demonstrate that ylide functionalization is a powerful tool to increase the donor strength of phosphines. The YPhos ligands obtained are easy to synthesize, more electron-rich than classical phosphines or even NHCs, and allow for improved catalytic activity in gold catalysis.

A luminescent radical doped into host molecular crystals exhibits doping concentration-dependent emission properties. In their Communication on page 12711 ff., T. Kusamoto, H. Nishihara, and co-workers report drastic changes in the emission spectra under an applied magnetic field in 10 wt % doped crystals. This is the first observation of magnetoluminescence in organic radicals.

Brønsted acid sites partially confined at the intercept of micro- and mesopores in two-dimensional MFI zeolite nanosheets are effective for C=C bond-coupling and ring-closure reactions that transform light aldehydes into aromatic compounds. In their Communication on page 12886 ff., Y.-H. Chin et al. establish the roles of these sites and their environment in catalytic aromatization, and of interlamellar mesopores in the efficient transport and removal of products.

Topological control in biopolymers relies on control of complex stereoregular cyclic architectures. In their Communication on page 12835 ff., J. Prunet, M. P. Shaver, and M. Alkattan exploit the ring-closing metathesis (RCM) of an olefin-pendant isotactic polymer to prepare a stereocontrolled 1,4-linked cyclopolyether. Post-polymerization dihydroxylation (DH) affords a poly(ethylene glycol) backbone with sugar-like functionalities that mimic the structure of amylose.

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September 20, 2018

Angewandte Chemie 39/2018: Embrace Chemistry

In this issue, K. Landfester et al. review engineering of proteins at interfaces. How can interactions be characterized and ideally engineered to produce functional material surfaces? In their Guest Editorial, M. Poliakoff, P. Licence, and M. W. George propose that sustainable chemistry requires some overarching goal that can be embraced by everyone.

In the Communications section, A. Douhal et al. describe a docking strategy to construct stable single-crystalline hydrogen-bonded organic frameworks with high surface area (see picture). J. Wu et al. have developed a microtubing-reactor-assisted aliphatic C–H functionalization with HCl as a hydrogen-atom-transfer catalyst precursor in conjunction with an organic photoredox catalyst. H. I. Karunadasa et al. present halide double perovskites with small band gaps, and V. Daggett et al. found a carboxylate to amide substitution that switches protein folds.

Browse issue 39/2018 now.

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