Angewandte Chemie International Edition

Cover image for Vol. 54 Issue 5

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

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January 29, 2015

Hot Paper: Highly Fluorescent and Water-Soluble Diketopyrrolopyrrole Dyes for Bioconjugation

Dr. Elodie Heyer, Pauline Lory, Dr. Jérôme Leprince, Dr. Mathieu Moreau, Prof. Anthony Romieu, Prof. Massimo Guardigli, Prof. Aldo Roda and Dr. Raymond Ziessel

Highly Fluorescent and Water-Soluble Diketopyrrolopyrrole Dyes for BioconjugationAll-in-one solution! A simple but very effective synthetic strategy to make diketopyrrolopyrrole (DPP) dyes water-soluble and highly fluorescent in aqueous media for bioconjugation to proteins is presented. Bovine serum albumin-DPP conjugates with unprecedentedly high quantum yields were obtained, thus enabling detection of minute amounts of fluorescent proteins through epifluorescence microscopy.

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January 29, 2015

Hot Paper: Enantioselective Palladium-Catalyzed Dearomative Cyclization for the Efficient Synthesis of Terpenes and Steroids

Kang Du, Pan Guo, Yuan Chen, Zhen Cao, Dr. Zheng Wang and Prof. Dr. Wenjun Tang

Enantioselective Palladium-Catalyzed Dearomative Cyclization for the Efficient Synthesis of Terpenes and SteroidsOne, two, three: An enantioselective palladium-catalyzed dearomative cyclization was developed for the efficient construction of a series of chiral tricyclic phenanthrenone derivatives bearing all-carbon quaternary centers. This method was applied in highly efficient syntheses of a kaurene intermediate, the skeleton of the anabolic steroid boldenone, and the antimicrobial diterpene (−)-totaradiol.

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January 29, 2015

Hot Paper: Reversible Reconfiguration of DNA Origami Nanochambers Monitored by Single-Molecule FRET

Dr. Barbara Saccà, Dr. Yuji Ishitsuka, Dr. Rebecca Meyer, Andreas Sprengel, Elisa-Charlott Schöneweiß, Prof. G. Ulrich Nienhaus and Prof. Christof M. Niemeyer

Reversible Reconfiguration of DNA Origami Nanochambers Monitored by Single-Molecule FRETInspired by their natural counterparts, dynamic compartmentalization systems were realized, in which the switchable mechanical movement of small DNA motifs was integrated into a DNA origami scaffold. The kinetics of the movement was determined by distance-dependent energy transfer between two fluorophores.

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January 29, 2015

Hot Paper: Preparation of Nanocrystalline Silicon from SiCl4 at 200 °C in Molten Salt for High-Performance Anodes for Lithium Ion Batteries

Ning Lin, Ying Han, Liangbiao Wang, Jianbin Zhou, Jie Zhou, Dr. Yongchun Zhu and Prof. Yitai Qian

Preparation of Nanocrystalline Silicon from SiCl4 at 200 °C in Molten Salt for High-Performance Anodes for Lithium Ion BatteriesReduction of SiCl4 with metallic Mg is realized in molten AlCl3 at the low temperature of 200 °C in a stainless steel autoclave. AlCl3 not only acts as a molten salt, but also participates in the reaction. The as-prepared Si nanoparticles are highly crystalline, which is highly desirable for high-performance Li-ion batteries.

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January 26, 2015

Angewandte Chemie 5/2015: The Power of Chemistry

Angewandte Chemie 5/2015: The Power of ChemistryIn this issue, S. Sánchez et al. review chemically powered micro- and nanomotors. What where the major advances in the first ten years of catalytic nanomotors research until now? In a Minireview, U. Meierhenrich et al. discuss molecular chirality in meteorites and interstellar ice, for example on board ESA's Rosetta mission. In her Editorial, Roberta Sessoli looks at the opportunities available for Italian chemical research.

In the Communications section, H. Liu et al. describe extracellular electron transfer from living microbes and its regulation by surface wettability (see picture). E. L. Chaikof et al. present targeted antithrombotic protein micelles, and K. T. Holman et al. squeezed xenon atoms into cryptophane-111 at up to 300 °C in the solid state. L. J. Murray et al. succeeded in dinitrogen activation upon reduction of a triiron(II) complex. J. Jin and D. W. C. MacMillan show how ethers can be directly α-arylated through a combination of photoredox C–H functionalization and the Minisci reaction.

Browse issue 5/2015 now.

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January 24, 2015

Hot Paper: Base-Promoted Coupling of Carbon Dioxide, Amines, and N-Tosylhydrazones: A Novel and Versatile Approach to Carbamates

Wenfang Xiong, Dr. Chaorong Qi, Haitao He, Lu Ouyang, Prof. Dr. Min Zhang and Prof. Dr. Huanfeng Jiang

Base-Promoted Coupling of Carbon Dioxide, Amines, and N-Tosylhydrazones: A Novel and Versatile Approach to CarbamatesCarbene intermediate? No! An unprecedented strategy for the synthesis of a range of organic carbamates through the coupling of carbon dioxide, amines, and N-tosylhydrazones is reported. The base-promoted reaction is proposed to proceed via a carbocation intermediate and is characterized by excellent functional group tolerance and a wide substrate scope.

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January 24, 2015

VIP: A Carbon–Air Battery for High Power Generation

Binbin Yang, Prof. Ran Ran, Yijun Zhong, Dr. Chao Su, Prof. Moses O. Tadé and Prof. Zongping Shao

A Carbon–Air Battery for High Power GenerationMidair refueling: A carbon–air battery based on a anode-supported tubular solid-oxide fuel cell integrated with a CO2 separation membrane (see picture) composed of a CO32− mixture and an O2− conducting phase showed both high energy density and power output. A small stack composed of two batteries can be operated continuously for 200 min, which is promising for use as a portable power device.

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January 23, 2015

Hot Paper: Palladium versus Platinum: The Metal in the Catalytic Center of a Molecular Photocatalyst Determines the Mechanism of the Hydrogen Production with Visible Light

Michael G. Pfeffer, Dr. Bernhard Schäfer, Dr. Grigory Smolentsev, Dr. Jens Uhlig, Dr. Elena Nazarenko, Dr. Julien Guthmuller, Dr. Christian Kuhnt, Dr. Maria Wächtler, Prof. Dr. Benjamin Dietzek, Prof. Dr. Villy Sundström and Prof. Dr. Sven Rau

Palladium versus Platinum: The Metal in the Catalytic Center of a Molecular Photocatalyst Determines the Mechanism of the Hydrogen Production with Visible LightShow your metal: The mechanism of the visible light-driven hydrogen production with an intramolecular photocatalyst depends on the nature of the catalytically active metal center. In Ru–M systems, where M=Pt or Pd, palladium forms metal colloids as initial step, whereas platinum shows a high stability and there is no change in the (N^N)PtCl2 coordination sphere.

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January 23, 2015

Hot Paper: Total Synthesis of (−)-Caprazamycin A

Hugh Nakamura, Dr. Chihiro Tsukano, Motohiro Yasui, Shinsuke Yokouchi, Dr. Masayuki Igarashi and Prof. Dr. Yoshiji Takemoto

Total Synthesis of (−)-Caprazamycin AAbra‘capraza’: Caprazamycin A has significant antibacterial activity against Mycobacterium tuberculosis (TB). The first total synthesis is herein reported and features the scalable preparation of the syn-β-hydroxy amino acid with a thiourea-catalyzed diastereoselective aldol reaction, construction of a diazepanone with an unstable fatty-acid side chain, and global deprotection with hydrogenation.

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January 22, 2015

VIP: Remarkably Enhanced Gas Separation by Partial Self-Conversion of a Laminated Membrane to Metal–Organic Frameworks

Dr. Yi Liu, Dr. Jia Hong Pan, Nanyi Wang, Frank Steinbach, Dr. Xinlei Liu and Prof. Jürgen Caro

Remarkably Enhanced Gas Separation by Partial Self-Conversion of a Laminated Membrane to Metal–Organic FrameworksFrom LDH to MOF: The partial transformation of a ZnAl-NO3 layered double hydroxide (LDH) membrane to a ZIF-8 metal–organic framework (MOF) top layer led to the formation of the composite membrane ZIF-8-ZnAl-NO3 LDH. This membrane is characterized by remarkably enhanced H2/CH4 gas separation and H2 permeance.

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January 21, 2015

Hot Paper: Heterogeneous Water Oxidation: Surface Activity versus Amorphization Activation in Cobalt Phosphate Catalysts

Diego González-Flores, Irene Sánchez, Dr. Ivelina Zaharieva, Katharina Klingan, Jonathan Heidkamp, Dr. Petko Chernev, Dr. Prashanth W. Menezes, Prof. Dr. Matthias Driess, Prof. Dr. Holger Dau and Dr. Mavis L. Montero

Heterogeneous Water Oxidation: Surface Activity versus Amorphization Activation in Cobalt Phosphate CatalystsThe complete transformation during catalytic operation of crystalline and surface-active Co3(PO4)2⋅8 H2O into amorphous and volume-active cobalt oxide reveals basic features of heterogeneous water oxidation catalysis, which is discussed as a convolution of three phenomena: surface catalysis, volume catalysis, and restructuring of the material under operation.

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January 21, 2015

VIP: Lithium Imide Synergy with 3d Transition-Metal Nitrides Leading to Unprecedented Catalytic Activities for Ammonia Decomposition

Jianping Guo, Peikun Wang, Prof. Dr. Guotao Wu, Prof. Dr. Anan Wu, Daqiang Hu, Prof. Dr. Zhitao Xiong, Prof. Dr. Junhu Wang, Pei Yu, Fei Chang, Zheng Chen and Prof. Dr. Ping Chen

Lithium Imide Synergy with 3d Transition-Metal Nitrides Leading to Unprecedented Catalytic Activities for Ammonia DecompositionBeyond an electronic promoter: A synergy between Li2NH and 3d transition-metal nitrides leads to unprecedented catalytic activities for NH3 decomposition. Li2NH acts as more than just an electronic promoter: it is an NH3 transmitting agent and favors the formation of a higher N-content intermediate, thereby altering the overall reaction energetics.

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January 29, 2015
Hot Paper: Highly Fluorescent and Water-Soluble Diketopyrrolopyrrole Dyes for Bioconjugation

January 29, 2015
Hot Paper: Enantioselective Palladium-Catalyzed Dearomative Cyclization for the Efficient Synthesis of Terpenes and Steroids

January 29, 2015
Hot Paper: Reversible Reconfiguration of DNA Origami Nanochambers Monitored by Single-Molecule FRET

January 29, 2015
Hot Paper: Preparation of Nanocrystalline Silicon from SiCl4 at 200 °C in Molten Salt for High-Performance Anodes for Lithium Ion Batteries

January 26, 2015
Angewandte Chemie 5/2015: The Power of Chemistry

January 24, 2015
Hot Paper: Base-Promoted Coupling of Carbon Dioxide, Amines, and N-Tosylhydrazones: A Novel and Versatile Approach to Carbamates

January 24, 2015
VIP: A Carbon–Air Battery for High Power Generation

January 23, 2015
Hot Paper: Palladium versus Platinum: The Metal in the Catalytic Center of a Molecular Photocatalyst Determines the Mechanism of the Hydrogen Production with Visible Light

January 23, 2015
Hot Paper: Total Synthesis of (−)-Caprazamycin A

January 22, 2015
VIP: Remarkably Enhanced Gas Separation by Partial Self-Conversion of a Laminated Membrane to Metal–Organic Frameworks

January 21, 2015
Hot Paper: Heterogeneous Water Oxidation: Surface Activity versus Amorphization Activation in Cobalt Phosphate Catalysts

January 21, 2015
VIP: Lithium Imide Synergy with 3d Transition-Metal Nitrides Leading to Unprecedented Catalytic Activities for Ammonia Decomposition

January 20, 2015
VIP: A D-Peptide Ligand of Nicotine Acetylcholine Receptors for Brain-Targeted Drug Delivery

January 20, 2015
VIP: Synergistic Interplay of a Non-Heme Iron Catalyst and Amino Acid Coligands in H2O2 Activation for Asymmetric Epoxidation of α-Alkyl-Substituted Styrenes

January 20, 2015
VIP: Electron Tunneling Rates in Respiratory Complex I Are Tuned for Efficient Energy Conversion

January 19, 2015
Angewandte Chemie 4/2015: Curiosity and Applications

January 15, 2015
VIP: Tetracyclopenta[def,jkl,pqr,vwx]tetraphenylene: A Potential Tetraradicaloid Hydrocarbon

January 14, 2015
Hot Paper: Gas-Separation Membranes Loaded with Porous Aromatic Frameworks that Improve with Age

January 14, 2015
VIP: Controlling the Subtle Energy Balance in Protic Ionic Liquids: Dispersion Forces Compete with Hydrogen Bonds

January 10, 2015
Hot Paper: Tunable Release of Multiplex Biochemicals by Plasmonically Active Rotary Nanomotors

January 09, 2015
Hot Paper: Nickel-Catalyzed Monoarylation of Ammonia

January 09, 2015
Hot Paper: Antibody Activation using DNA-Based Logic Gates

January 09, 2015
Hot Paper: Ratiometric Fluorescence Imaging of Cellular Polarity: Decrease in Mitochondrial Polarity in Cancer Cells

January 09, 2015
VIP: Elucidation of the Concise Biosynthetic Pathway of the Communesin Indole Alkaloids

January 08, 2015
Hot Paper: Indolo-Phakellins as β5-Specific Noncovalent Proteasome Inhibitors

January 07, 2015
Hot Paper: The Nature of Photocatalytic “Water Splitting” on Silicon Nanowires

January 07, 2015
Hot Paper: A Small-Molecule Protein–Protein Interaction Inhibitor of PARP1 That Targets Its BRCT Domain

January 07, 2015
Hot Paper: Atomically Thin Arsenene and Antimonene: Semimetal–Semiconductor and Indirect–Direct Band-Gap Transitions

January 07, 2015
Hot Paper: Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction

January 07, 2015
Hot Paper: Visible-Light-Driven CO2 Reduction with Carbon Nitride: Enhancing the Activity of Ruthenium Catalysts

January 07, 2015
Hot Paper: Sensitive and Multiplexed On-chip microRNA Profiling in Oil-Isolated Hydrogel Chambers

December 31, 2014
Hot Paper: Generation of a Genetically Encoded, Photoactivatable Intein for the Controlled Production of Cyclic Peptides

December 31, 2014
Hot Paper: The Phosphinoboration Reaction

December 31, 2014
Hot Paper: Unraveling the Intrinsic Color of Chlorophyll

December 31, 2014
Hot Paper: Application of Fragment-Based Screening to the Design of Inhibitors of Escherichia coli DsbA

December 30, 2014
Hot Paper: Excluded-Volume Effects in Living Cells

December 30, 2014
VIP: Rational Design of a Humanized Glucagon-Like Peptide-1 Receptor Agonist Antibody

December 30, 2014
VIP: Programmable Engineering of a Biosensing Interface with Tetrahedral DNA Nanostructures for Ultrasensitive DNA Detection

December 24, 2014
Hot Paper: Krebs Cycle Metabolon: Structural Evidence of Substrate Channeling Revealed by Cross-Linking and Mass Spectrometry

December 24, 2014
Hot Paper: Live-Cell Imaging of Endogenous mRNAs with a Small Molecule

December 24, 2014
VIP: Crystalline Stereocomplexed Polycarbonates: Hydrogen-Bond-Driven Interlocked Orderly Assembly of the Opposite Enantiomers

December 22, 2014
Hot Paper: Liquid-Phase Epitaxial Growth of Two-Dimensional Semiconductor Hetero-nanostructures

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