ChemistryEuropePub Date : 2025-08-02DOI: 10.1002/ceur.202500209
Tsz-Kan Ma, Peerawat Saejong, King-Long Or, Callum S. Begg, James A. Bull
{"title":"Synthesis of Cyclic Sulfilimines and Sulfoximines via Copper-Mediated C(sp2)–H Sulfanylation of Benzylamines with a Catalytic Transient Directing Group","authors":"Tsz-Kan Ma, Peerawat Saejong, King-Long Or, Callum S. Begg, James A. Bull","doi":"10.1002/ceur.202500209","DOIUrl":"https://doi.org/10.1002/ceur.202500209","url":null,"abstract":"<p>C─H functionalization presents opportunities to streamline the synthesis of valuable molecular structures. This study details the development of a copper-mediated, transient C(sp<sup>2</sup>)–H sulfanylation of benzylamines with a transient directing group (TDG). Subsequent oxidative cyclization forms novel cyclic sulfilimines and sulfoximines, emerging heterocyclic scaffolds with attractive properties for drug discovery. Crucially, sulfenamides are identified as effective sulfanylating reagents for the C─H sulfanylation with catalytic 2-hydroxynicotinaldehyde as the TDG. Unconventionally, sulfenamides provided a slow release of the essential sulfanyl radicals through a thermally induced homolytic cleavage of the N─S bond, supported by mechanistic studies including electron paramagnetic resonance spectroscopy and radical quenching experiments. The sulfide products are then readily diversified at sulfur and nitrogen, including through cyclization.</p>","PeriodicalId":100234,"journal":{"name":"ChemistryEurope","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/ceur.202500209","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemistryEuropePub Date : 2025-08-02DOI: 10.1002/ceur.202500209
Tsz-Kan Ma, Peerawat Saejong, King-Long Or, Callum S. Begg, James A. Bull
{"title":"Synthesis of Cyclic Sulfilimines and Sulfoximines via Copper-Mediated C(sp2)–H Sulfanylation of Benzylamines with a Catalytic Transient Directing Group","authors":"Tsz-Kan Ma, Peerawat Saejong, King-Long Or, Callum S. Begg, James A. Bull","doi":"10.1002/ceur.202500209","DOIUrl":"https://doi.org/10.1002/ceur.202500209","url":null,"abstract":"<p>C─H functionalization presents opportunities to streamline the synthesis of valuable molecular structures. This study details the development of a copper-mediated, transient C(sp<sup>2</sup>)–H sulfanylation of benzylamines with a transient directing group (TDG). Subsequent oxidative cyclization forms novel cyclic sulfilimines and sulfoximines, emerging heterocyclic scaffolds with attractive properties for drug discovery. Crucially, sulfenamides are identified as effective sulfanylating reagents for the C─H sulfanylation with catalytic 2-hydroxynicotinaldehyde as the TDG. Unconventionally, sulfenamides provided a slow release of the essential sulfanyl radicals through a thermally induced homolytic cleavage of the N─S bond, supported by mechanistic studies including electron paramagnetic resonance spectroscopy and radical quenching experiments. The sulfide products are then readily diversified at sulfur and nitrogen, including through cyclization.</p>","PeriodicalId":100234,"journal":{"name":"ChemistryEurope","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/ceur.202500209","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fiammetta Vitulano, Andrea Solida, Letizia Sorti, Carlo F. Morelli, Alessandro Minguzzi, Alberto Vertova
{"title":"Cover Feature: Alcohol and Carbonyl Redox Reactions in Electrochemical Organic Synthesis (ChemistryEurope 4/2025)","authors":"Fiammetta Vitulano, Andrea Solida, Letizia Sorti, Carlo F. Morelli, Alessandro Minguzzi, Alberto Vertova","doi":"10.1002/ceur.70006","DOIUrl":"10.1002/ceur.70006","url":null,"abstract":"<p><b>The Cover Feature</b> illustrates the potentialities of electrochemistry for green organic synthesis, which avoids the transport/storage/handling of hazardous reducing and oxidizing chemicals. In their Review (DOI: 10.1002/ceur.202500013), A. Minguzzi and co-workers consider electrochemical oxidation and reduction from/to alcohols and carbonyl groups in a reader-friendly format.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":100234,"journal":{"name":"ChemistryEurope","volume":"3 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ceur.70006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Magda Křelinová, Michèle Salmain, Petr Štěpnička, Ivana Císařová, Benoît Bertrand, Jiří Schulz
{"title":"Cover Feature: Introduction of a Phosphine Group onto the Ferrocene Moiety in Ferrociphenol Opens Access to New Heterobimetallic Complexes with Anticancer Activity (ChemistryEurope 4/2025)","authors":"Magda Křelinová, Michèle Salmain, Petr Štěpnička, Ivana Císařová, Benoît Bertrand, Jiří Schulz","doi":"10.1002/ceur.70008","DOIUrl":"10.1002/ceur.70008","url":null,"abstract":"<p><b>The Cover Feature</b> shows a new ferrociphenol derivative that was designed to equip a prominent organometallic anticancer agent with an additional phosphine group capable of coordinating other metal centers. In their Research Article (DOI: 10.1002/ceur.202500048), B. Bertrand, J. Schulz and co-workers report the syntheses of this compound, its corresponding phosphonium salt, and transition metal complexes incorporating the functional phosphine, along with their preliminary evaluation as anticancer agents.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":100234,"journal":{"name":"ChemistryEurope","volume":"3 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ceur.70008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Front Cover: pH-Controlled Gliding Motions in Pillar[5]arene-Containing Molecular Shuttles (ChemistryEurope 4/2025)","authors":"Nihed Becharguia, Iwona Nierengarten, Alix Sournia-Saquet, Emeric Wasielewski, Rym Abidi, Béatrice Delavaux-Nicot, Jean-François Nierengarten","doi":"10.1002/ceur.70005","DOIUrl":"10.1002/ceur.70005","url":null,"abstract":"<p><b>The Front Cover</b> shows a space shuttle passing through a pillar[5]arene to illustrate a molecular shuttle combining this macrocyclic component with an axle moiety incorporating a decyl chain station and a protonable triazole subunit. In their research article (DOI: 10.1002/ceur.202400115), I. Nierengarten, B. Delavaux-Nicot, J.-F. Nierengarten and co-workers show that the amplitude of the gliding motions of the macrocyclic component along the axle moiety of the molecular shuttle can be controlled by an acid–base or an electrochemical stimulus.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":100234,"journal":{"name":"ChemistryEurope","volume":"3 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ceur.70005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cover Feature: Self-Assembly of Silver Nanoclusters by Cooperative Acetylene Bonding with Mutual Pyridyl Coordination (ChemistryEurope 4/2025)","authors":"Tasuki Tsurumi, Takahiro Nakagawa, Takashi Kikuchi, Kiyohiro Adachi, Hironobu Hayashi, Atsuro Takai, Takuma Kaneko, Tomoya Uruga, Daisuke Hashizume, Yosuke Nakamura, Makoto Fujita, Yuya Domoto","doi":"10.1002/ceur.70007","DOIUrl":"10.1002/ceur.70007","url":null,"abstract":"<p><b>The Cover Feature</b> highlights the self-assembly of alkyne-protected silver nanoclusters networked through silver⋯pyridyl coordination in the crystalline lattice. In their Research Article (DOI: 10.1002/ceur.202500069), Y. Domoto and co-workers demonstrate that cooperative acetylene coordination, which is provided by a simple bifunctional ligand equipped with both a terminal alkyne and a pyridyl group, is applicable to the spatial organization of photoluminescent atomically precise clusters into the 3D coordination nanomaterials.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":100234,"journal":{"name":"ChemistryEurope","volume":"3 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ceur.70007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemistryEuropePub Date : 2025-07-11DOI: 10.1002/ceur.202500119
Eveline H. Tiekink, Matthijs W. Kragtwijk, Trevor A. Hamlin
{"title":"Small Molecule Activation by Metallylenes and their Follow-Up Reactions","authors":"Eveline H. Tiekink, Matthijs W. Kragtwijk, Trevor A. Hamlin","doi":"10.1002/ceur.202500119","DOIUrl":"https://doi.org/10.1002/ceur.202500119","url":null,"abstract":"<p>The activation of small molecules is a crucial step in advancing sustainable chemistry, enabling key transformations in fine chemical synthesis and energy storage. While transition metals have traditionally dominated this field, main-group elements—specifically metallylenes, which are heavier analogs of carbenes (silylenes, germylenes, stannylenes, and plumbylenes)—have emerged as viable alternatives due to their unique electronic properties and tunable reactivity. This review explores the mechanisms by which metallylenes activate small molecules, highlighting the influence of ligand design, electronic structure, and geometric factors. We discuss recent advances in the field, including computational insights into metallylene-mediated bond activation and experimental demonstrations of their catalytic potential. Additionally, we examine follow-up reactions such as hydrogenation and hydroboration, which illustrate the versatility of metallylenes in small-molecule transformation. By providing a comprehensive overview of the latest developments, this review aims to bridge fundamental principles with potential applications, paving the way for metallylene-based catalysis in sustainable chemistry.</p>","PeriodicalId":100234,"journal":{"name":"ChemistryEurope","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/ceur.202500119","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemistryEuropePub Date : 2025-07-11DOI: 10.1002/ceur.202500119
Eveline H. Tiekink, Matthijs W. Kragtwijk, Trevor A. Hamlin
{"title":"Small Molecule Activation by Metallylenes and their Follow-Up Reactions","authors":"Eveline H. Tiekink, Matthijs W. Kragtwijk, Trevor A. Hamlin","doi":"10.1002/ceur.202500119","DOIUrl":"https://doi.org/10.1002/ceur.202500119","url":null,"abstract":"<p>The activation of small molecules is a crucial step in advancing sustainable chemistry, enabling key transformations in fine chemical synthesis and energy storage. While transition metals have traditionally dominated this field, main-group elements—specifically metallylenes, which are heavier analogs of carbenes (silylenes, germylenes, stannylenes, and plumbylenes)—have emerged as viable alternatives due to their unique electronic properties and tunable reactivity. This review explores the mechanisms by which metallylenes activate small molecules, highlighting the influence of ligand design, electronic structure, and geometric factors. We discuss recent advances in the field, including computational insights into metallylene-mediated bond activation and experimental demonstrations of their catalytic potential. Additionally, we examine follow-up reactions such as hydrogenation and hydroboration, which illustrate the versatility of metallylenes in small-molecule transformation. By providing a comprehensive overview of the latest developments, this review aims to bridge fundamental principles with potential applications, paving the way for metallylene-based catalysis in sustainable chemistry.</p>","PeriodicalId":100234,"journal":{"name":"ChemistryEurope","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/ceur.202500119","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemistryEuropePub Date : 2025-07-09DOI: 10.1002/ceur.202500193
Nimisha Jain, Gregoire David, Marie Cordier, Yan Suffren, Boris Le Guennic, Yann Sarazin, Kevin Bernot
{"title":"Magneto-Optical Correlations in a High Symmetry Dysprosium Complex Reveal an Almost “Ideal Non-SMM” and Orange-to-Red DyIII-Based Emitter","authors":"Nimisha Jain, Gregoire David, Marie Cordier, Yan Suffren, Boris Le Guennic, Yann Sarazin, Kevin Bernot","doi":"10.1002/ceur.202500193","DOIUrl":"https://doi.org/10.1002/ceur.202500193","url":null,"abstract":"<p>The importance of investigating high-symmetry systems in order to reveal properties that would otherwise be concealed in less symmetrical compounds is demonstrated. This is particularly true for discrete coordination complexes that tend to adopt low symmetries. The magnetic, optical, and theoretical investigation of [Dy{N(SiMe<sub>3</sub>)<sub>2</sub>}<sub>3</sub>], an amido complex that features an almost trigonal electrostatic environment around the Dy<sup>III</sup> ion, is reported here. While this specific coordination is ideally suited to the stabilization of high magnetic ground state for “<i>prolate”</i> Yb<sup>III</sup>-based single-molecule magnet (SMM), it is the opposite for <i>oblate</i> Dy<sup>III</sup>. Hence, [Dy{N(SiMe<sub>3</sub>)<sub>2</sub>}<sub>3</sub>] is expected to display the lowest conceivable magnetic anisotropy. This is confirmed herein by magneto-optical and theoretical correlations. An extremely pure Kramers doublet composition is observed on a totally reversed energetic profile compared to the standard Dy<sup>III</sup>-SMM. This results in a paramagnetic but dynamically silent compound, even when an external dc field is applied. Additionally, this unusual energetic profile induces an exceptional optical signature, with orange (300 K) to red (4 K) emission, far from the traditional white-to-yellow emission expected for a Dy<sup>III</sup> ion.</p>","PeriodicalId":100234,"journal":{"name":"ChemistryEurope","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/ceur.202500193","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemistryEuropePub Date : 2025-07-09DOI: 10.1002/ceur.202500193
Nimisha Jain, Gregoire David, Marie Cordier, Yan Suffren, Boris Le Guennic, Yann Sarazin, Kevin Bernot
{"title":"Magneto-Optical Correlations in a High Symmetry Dysprosium Complex Reveal an Almost “Ideal Non-SMM” and Orange-to-Red DyIII-Based Emitter","authors":"Nimisha Jain, Gregoire David, Marie Cordier, Yan Suffren, Boris Le Guennic, Yann Sarazin, Kevin Bernot","doi":"10.1002/ceur.202500193","DOIUrl":"https://doi.org/10.1002/ceur.202500193","url":null,"abstract":"<p>The importance of investigating high-symmetry systems in order to reveal properties that would otherwise be concealed in less symmetrical compounds is demonstrated. This is particularly true for discrete coordination complexes that tend to adopt low symmetries. The magnetic, optical, and theoretical investigation of [Dy{N(SiMe<sub>3</sub>)<sub>2</sub>}<sub>3</sub>], an amido complex that features an almost trigonal electrostatic environment around the Dy<sup>III</sup> ion, is reported here. While this specific coordination is ideally suited to the stabilization of high magnetic ground state for “<i>prolate”</i> Yb<sup>III</sup>-based single-molecule magnet (SMM), it is the opposite for <i>oblate</i> Dy<sup>III</sup>. Hence, [Dy{N(SiMe<sub>3</sub>)<sub>2</sub>}<sub>3</sub>] is expected to display the lowest conceivable magnetic anisotropy. This is confirmed herein by magneto-optical and theoretical correlations. An extremely pure Kramers doublet composition is observed on a totally reversed energetic profile compared to the standard Dy<sup>III</sup>-SMM. This results in a paramagnetic but dynamically silent compound, even when an external dc field is applied. Additionally, this unusual energetic profile induces an exceptional optical signature, with orange (300 K) to red (4 K) emission, far from the traditional white-to-yellow emission expected for a Dy<sup>III</sup> ion.</p>","PeriodicalId":100234,"journal":{"name":"ChemistryEurope","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/ceur.202500193","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}