DCPNs with reversible Lewis pair bonds are reported. Nitrogen-borane adducts impart dynamic mechanical properties, such as self-healing and recyclability, to polydimethylsiloxane elastomers.

[Research Article]
Edip Ajvazi, Verena Schinegger, Felix Bauer, Diana Drechsler, Patrick Rettenwander, Dominik Kaineder, Milan Kracalik, Oliver Brüggemann, Sabine Hild, Ingrid Graz, Uwe Monkowius, Ian Teasdale
Chemistry ? A European Journal, https://doi.org/10.1002/chem.202501595. Read article.

An umpolung strategy allowing the use of stilbenes as electrophiles in substitution reactions is developed that relies on a combination of m-chloroperbenzoic acid and hexafluoroisopropanol. This new step-economic approach gives rise to benzhydryl derivatives by the use of different nitrogenated, oxygenated, and sulfur- and carbon-based nucleophiles.

[Research Article]
Francisco J. Sierra-Molero, Alejandro Baeza, Diego A. Alonso, Hernan Rico-Trilles
European Journal of Organic Chemistry, https://doi.org/10.1002/ejoc.202500547. Read article.

We present a photochemical strategy for transforming 1H- and 2H-indazoles into benzimidazoles, enabling heteroaromatic interconversion under mild conditions. This approach, grounded in a two-step mechanism of excited-state tautomerization and photochemical rearrangement, offers broad scope, high yields, and functional group tolerance, expanding the diversity of heterocycle-based libraries for fragment-based drug discovery.

[Research Article]
Dr. Thiago dos Santos, Dr. Cornelia S. Buettner, Dilara Berna Yildiz, Martina Mamone, Alessandro Ruffoni, Prof. Daniele Leonori
Angewandte Chemie International Edition, https://doi.org/10.1002/anie.202423804. Read article.

The QPAF-225-10 (10% QPAF-225 in membrane) integrated quaternary ammonium -functionalized porous aromatic frameworks (QPAF-225) and sulfonated poly[2,2′-(p-oxydiphenyl)-5,5′-biphenylimidazole] (SOPBI), forming a self-reinforcing ionic crosslinking network to achieve high proton conductivity of 174 mS cm−1 and the peak power density of 847 mW cm−2 at high-temperature (200 °C) proton exchange membrane fuel cell (HT-PEMFCs. High-density basic sites in QPAF-225 suppressed the PA leakage, illustrating 0.04 mV h−1 voltage decay (904 h) and robust mechanical stability. This framework-engineered strategy overcomes PA-PBI (PA-doped polybenzimidazole) membrane limitations, enabling durable HT-PEMFCs.

[Research Article]
Xinyi Zong, Haina Mi, Fei Chen, Xianfeng Guan, Yuhan Liu, Prof. Dr. Wei Hu, Prof. Dr. Nanwen Li, Chunzhu Jiang, Prof. Dr. Yunfeng Lu, Guangshan Zhu, Prof. Wei Yan, Prof. Jiujun Zhang
Angewandte Chemie International Edition, https://doi.org/10.1002/anie.202509085. Read article.

Herein, direct deoxygenative borylation of acyl chlorides is reported, which is an unknown but desirable chemical transformation. The N-heterocyclic nitrenium ion has been utilized as the photocatalyst under mild reaction conditions to synthesize a series of alkylboronates using bis-(catecholato)diboron (B2cat2) as the diboron reagent. The reaction follows a radical pathway, with breaking of the CO bond as the key step.

[Research Article]
Rahul Mondal, Apurba Kumar Pal, K. Geetharani
ChemistryEurope, https://doi.org/10.1002/ceur.202500093. Read article.

CH H bonds (HB) are normally much weaker than those involving the OH group. Quantum chemical calculations address the sorts of substituents, and their placement, that might adjust the strengths of the OH··N and CH··N HBs to make them more nearly equal.

[Research Article]
Savannah Rawlings, Steve Scheiner
ChemistryEurope, https://doi.org/10.1002/ceur.202500088. Read article.

Benzochalcogenodiazoles (BXD) including benzoxadiazoles, benzothiadiazoles, and benzoselenadiazoles are initially mainly designed for optoelectronic materials as electron-deficient cores. Nevertheless, they are now extending their application to biology. In this review, the synthesis of BXDs and their use in medicinal chemistry as lipophilic aromatics and in photomedicinal chemistry as photosensitizers will be presented.

[Review]
Jean-Elie Zheng, Xavier Franck, Thibault Gallavardin
European Journal of Organic Chemistry, https://doi.org/10.1002/ejoc.202500228. Read article.

An indole synthesis via an allenyl ester intermediate at ambient temperature has been developed. The mild reaction conditions allow the use of a broad range of substrates. Notably, the utility of this approach is demonstrated through the asymmetric total synthesis of geissoschizoline, a Strychnos-type monoterpenoid indole alkaloid. This synthesis highlights a novel strategy for accessing monoterpenoid indole alkaloids.

[Research Article]
Sohsuke Moriue, Honami Nishioka, Yuto Fukuda, Hiromitsu Takayama, Mariko Kitajima, Hayato Ishikawa
ChemistryEurope, https://doi.org/10.1002/ceur.202500129. Read article.

We present high-frequency/high-field EPR spectroscopy studies on a series of pentagonal-bipyramidally coordinated ErIII(DAPMBH/H2DAPS)X complexes with different apical ligands (X = (H2O)Cl (1), (CH3OH)N3 (2), Cl2 (3)) to directly determine the electronic properties of the ground state and low-energy Kramers doublets, namely effective g-tensors and zero field splittings. Our findings are compared to the results of numerical studies and are used to rationalise the observed differences in magnetic relaxation behavior.

[Research Article]
Jan Arneth, Dr. Lena Spillecke, Dr. Changyun Koo, Dr. Tamara A. Bazhenova, Prof. Dr. Eduard B. Yagubskii, Prof. Dr. Rüdiger Klingeler
Chemistry ? A European Journal 2025, 31, 0. Read article.

Highly selective light-driven CO2 conversion to CO is achieved using an [FeFe]-hydrogenase-inspired molecular dyad (PS-CAT) acting simultaneously as photosensitizer and catalyst. The presence of water as a solvent is important for such selectivity. Assembling the PS-CAT in the hydrophobic part of lipid bilayers of liposomes allows the use of water as a solvent, static excited state quenching and high turnover numbers.

[Research Article]
Amir Abbas, Chizuru Kasahara, Yongchao Chen, Martin Oschatz, Stefanie Gräfe, Wolfgang Weigand, Andrea Pannwitz
ChemCatChem, https://doi.org/10.1002/cctc.202401947. Read article.