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Pyridine and piperidine are common structural motifs in natural products and pharmaceutical compounds, underscoring the importance of their synthesis. Our group has developed chiral spiro‐bicyclic bisborane catalysts that enable the efficient and highly enantioselective reduction of pyridines to chiral piperidines. Subsequent transformations allow the conversion of the piperidine products into bioactive natural products. More details are discussed in the article by Wang et al. on pages 3088—3092. image

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The syntheses of poly[2]catenane gels reported to date all rely on the polymer as the backbone. We reported poly[2]catenane gels prepared by entirely sequential self‐assembly of small molecules via noncovalent and dynamic covalent bonds. Due to the presence of hydrogen bonds in the poly[2]catenane gels, the gels also possessed stimulus responsiveness and self‐healing properties. More details are discussed in the article by Ji et al. on pages 2699—2704. image

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Practical CO2 and CO electroreduction are often operated at elevated temperatures, yet the correlation between the temperature increase and catalytic activity and selectivity has not been well‐defined. This study uncovers that higher temperatures enhance *CO coverages, but in CO2 reduction, they also promote *CO desorption to vapor‐phase CO, lowering C2H4 selectivity. In CO reduction, elevated temperatures facilitate CO diffusion to overcome the unfavorable *CO adsorption thermodynamics, which promotes C—C coupling. More details are discussed in the article by Wang et al. on pages 2705—2711. image

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Cover Picture: (Helv. Chim. Acta 10/2024)

Cover Picture: (Helv. Chim. Acta 10/2024)

Cover Picture: Synthesis and computational studies for halide‐free, neutral, and bifunctional one‐component ferrocene‐based catalysts for the coupling of carbon dioxide and epoxides (BKCS 10/2024) Jieun Lee, Wooram Lee, Yoseph Kim, Mujin Choi, Seol Ryu, Joonkyung Jang, Youngjo Kim

Cover Picture: Synthesis and computational studies for halide‐free, neutral, and bifunctional one‐component ferrocene‐based catalysts for the coupling of carbon dioxide and epoxides (BKCS 10/2024) Jieun Lee, Wooram Lee, Yoseph Kim, Mujin Choi, Seol Ryu, Joonkyung Jang, Youngjo Kim

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Cover Picture: Fundamental and Practical Aspects of Break‐In/Conditioning of Proton Exchange Membrane Fuel Cells (Chem. Rec. 10/2024)

Cover Picture: Fundamental and Practical Aspects of Break‐In/Conditioning of Proton Exchange Membrane Fuel Cells (Chem. Rec. 10/2024)

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In the heterogeneous MoS2 co‐catalytic system, the Lewis acid‐base sites on the surface of MoS2 play a critical role in constructing an acidic microenvironment. By regulating the Lewis acid‐base sites, the co‐catalytic effect of Mo element and the acidic microenvironment effect of S– sites can be better utilized. More details are discussed in the article by Xing et al. on pages 2563—2571.image

Cover Picture: Optical imaging for brown or beige adipose tissue (View 5/2024)

Cover Picture: Optical imaging for brown or beige adipose tissue (View 5/2024)

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Cover Picture: Engineering in Life Sciences 10'24

Cover Picture: Engineering in Life Sciences 10'24

Cover Picture: Geomechanics and Tunnelling 5/2024

AbstractDespite challenging conditions it was possible to excavate the Lokev Tunnel, now the longest railway tunnel in Slovenia, within three years. Using AT – Pipe Umbrella System helped secure the excavation work and assured steady progress. Now it is save to say that first tests runs are planned for early 2026. (Photo: DSI Underground)

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