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Pd-catalyzed 5-exo-dig cyclization/etherification cascade of N-propargyl arylamines for synthesis of polysubstituted furans
IF 4.9 2区 化学
Chemical Communications Pub Date : 2024-06-28 DOI: 10.1039/d4cc02255f
Meng-Ru Li, Meng-Yao Zheng, Dong-Chao Wang, Hai-Ming Guo
{"title":"Pd-catalyzed 5-exo-dig cyclization/etherification cascade of N-propargyl arylamines for synthesis of polysubstituted furans","authors":"Meng-Ru Li, Meng-Yao Zheng, Dong-Chao Wang, Hai-Ming Guo","doi":"10.1039/d4cc02255f","DOIUrl":"https://doi.org/10.1039/d4cc02255f","url":null,"abstract":"A method for the synthesis of furans bearing indoline skeletons was developed via an intramolecular palladium-catalyzed 5-exo-dig cyclization/etherification cascade of N-propargyl arylamines containing a 1,3-dicarbonyl side chain. This method realized the first capture of vinyl carbopalladiums by ketones as O-nucleophiles and showed a wide range of substrate tolerability affording trisubstituted furans in various yields. The enantioselective version for this domino process and diverse derivatizations of the reaction products were also studied.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integration of Nonlinear Two-photon Excited Fluorescence and Photocatalysis Boosts Overall Water Splitting Performance
IF 4.9 2区 化学
Chemical Communications Pub Date : 2024-06-28 DOI: 10.1039/d4cc02530j
Tengfei Ding, Yaqin Li, Yong Jiang, Shengli Li, Yuxue Wei, Mengdie Cai, Fang Chen, Lisheng Guo, Song Sun
{"title":"Integration of Nonlinear Two-photon Excited Fluorescence and Photocatalysis Boosts Overall Water Splitting Performance","authors":"Tengfei Ding, Yaqin Li, Yong Jiang, Shengli Li, Yuxue Wei, Mengdie Cai, Fang Chen, Lisheng Guo, Song Sun","doi":"10.1039/d4cc02530j","DOIUrl":"https://doi.org/10.1039/d4cc02530j","url":null,"abstract":"A nonlinear two-photon excited fluorescence photocatalytic system was constructed for the first time by integrating (ZnO)1-x(GaN)x photocatalyst and a fluorescence solution of phenanthridine derivatives. This work offers a strategy for increasing the photocatalytic solar spectral utilization rate and boosting the expectation for photocatalytic solar-to-hydrogen efficiencis.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metal- and additive-free β-C(sp2)-H decarboxylative alkylsulfonylation of enamides from phenyliodine(III) dicarboxylates and sulfur dioxide
IF 4.9 2区 化学
Chemical Communications Pub Date : 2024-06-28 DOI: 10.1039/d4cc02865a
Wenyan Li, Chenxin Wang, Tong-Hao Zhu, Gang Liu, Jie Wu
{"title":"Metal- and additive-free β-C(sp2)-H decarboxylative alkylsulfonylation of enamides from phenyliodine(III) dicarboxylates and sulfur dioxide","authors":"Wenyan Li, Chenxin Wang, Tong-Hao Zhu, Gang Liu, Jie Wu","doi":"10.1039/d4cc02865a","DOIUrl":"https://doi.org/10.1039/d4cc02865a","url":null,"abstract":"A green process for the direct C(sp2)-H decarboxylative alkylsulfonylation of enamides under metal- and additive-free conditions is reported. This reaction employs phenyliodine(III) dicarboxylates as the alkyl radical precursors and DABCO·(SO2)2 as the sulfur dioxide surrogate. Diverse (E)-alkylsulfonyl enamides are generated in moderate to good yields with high stereoselectivity under extremely mild condition via a radical process. A broad substrate scope and excellent functional group tolerance is presented. Moreover, a cascade alkylsulfonylation/cyclization reaction of N-methacryloyl enamides occur smoothly, giving rise to various alkylsulfonylated pyrrolidones.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical synthesis of β-difluoromethylamide compounds by N-benzenesulfonylacrylamide with difluorine reagents
IF 4.9 2区 化学
Chemical Communications Pub Date : 2024-06-28 DOI: 10.1039/d4cc02543a
Zhi-Long Lei, Zong-Cang Ding, Shu-Hui Li, Fei-Hu Cui, Hai-Tao Tang, Ying-Ming Pan
{"title":"Electrochemical synthesis of β-difluoromethylamide compounds by N-benzenesulfonylacrylamide with difluorine reagents","authors":"Zhi-Long Lei, Zong-Cang Ding, Shu-Hui Li, Fei-Hu Cui, Hai-Tao Tang, Ying-Ming Pan","doi":"10.1039/d4cc02543a","DOIUrl":"https://doi.org/10.1039/d4cc02543a","url":null,"abstract":"A mild and efficient electrochemical method for radical addition, cyclization, and migration reaction was described in this work. Difluoromethyl radical was produced by anodizing CF2HSO2Na. The resulting product was then added to olefin, underwent Smiles cyclization, and migrated to form β-difluoromethamide compounds after the release of SO2. The process was free from metals and catalysts, gram-grade, and resistant to a variety of electron-rich substrates.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Guest-selective shape-memory effect in a switchable metal-organic framework DUT-8(Zn).
IF 4.9 2区 化学
Chemical Communications Pub Date : 2024-06-27 DOI: 10.1039/d4cc01657b
Leila Abylgazina, Irena Senkovska, Volodymyr Bon, Nadine Bönisch, Mariia Maliuta, Stefan Kaskel
{"title":"Guest-selective shape-memory effect in a switchable metal-organic framework DUT-8(Zn).","authors":"Leila Abylgazina, Irena Senkovska, Volodymyr Bon, Nadine Bönisch, Mariia Maliuta, Stefan Kaskel","doi":"10.1039/d4cc01657b","DOIUrl":"https://doi.org/10.1039/d4cc01657b","url":null,"abstract":"Crystal size engineering allows to tailor flexible metal-organic frameworks (MOFs) and achieve new properties. The gating type flexibility of DUT-8(Zn) ([Zn<small><sub>2</sub></small>(2,6-ndc)<small><sub>2</sub></small>(dabco)], 2,6-ndc = 2,6-naphthalenedicarboxylate, dabco = 1,4-diazabicyclo-[2.2.2]-octane) compound is known to be extremely particle size sensitive. Here, the physisorption of ethanol vapor leads to so-called shape-memory effects, leading to rigidification and flexibility suppression. According to powder X-ray diffraction and nitrogen physisorption experiments, the open pore phase is retained after desorption of alcohols, which could be attributed to the nano-structuring and surface deformation of the crystals as a result of exposure to alcohols.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141461675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chalcogen Bonding Interactions Between Ebselen and Nitrite Promote N-nitrosation of Amine
IF 4.9 2区 化学
Chemical Communications Pub Date : 2024-06-27 DOI: 10.1039/d4cc02137a
Tuhin Sahana, Adwaith K. Valappil, Subrata Kundu
{"title":"Chalcogen Bonding Interactions Between Ebselen and Nitrite Promote N-nitrosation of Amine","authors":"Tuhin Sahana, Adwaith K. Valappil, Subrata Kundu","doi":"10.1039/d4cc02137a","DOIUrl":"https://doi.org/10.1039/d4cc02137a","url":null,"abstract":"Ebselen (EbSe), a therapeutically significant molecule, is shown to exhibit chalcogen bonding interaction with nitrite anion (ONO<small><sup>–</sup></small>). The report suggest that the σ-hole of EbSe is powerful for offering weak but influential interactions towards biologically relevant ONO<small><sup>–</sup></small>, thereby assisting oxidative transformations like N-nitrosation of aromatic amines.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141461681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inverse opals with reactive surface chemistry as sensors for aqueous pollutants
IF 4.9 2区 化学
Chemical Communications Pub Date : 2024-06-27 DOI: 10.1039/d4cc01781a
Giulia Magnabosco, Maria Ochs, Natalie Bonakdar, Laura Czerwenka, Annette Andrieu-Brunsen, Nicolas Vogel
{"title":"Inverse opals with reactive surface chemistry as sensors for aqueous pollutants","authors":"Giulia Magnabosco, Maria Ochs, Natalie Bonakdar, Laura Czerwenka, Annette Andrieu-Brunsen, Nicolas Vogel","doi":"10.1039/d4cc01781a","DOIUrl":"https://doi.org/10.1039/d4cc01781a","url":null,"abstract":"Inverse opal colorimetric sensors operating on wetting transitions usually rely on physical differences of the infiltrating liquid. Here, we exploit a reactive surface chemistry that changes wettability upon binding of an analyte. Upon binding of Fe3+ to a Schiff base immobilized on the porous structure, the surface becomes more hydrophilic, triggering the infiltration of the structure and causing the structural color to disappear.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141461709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inhibition of fibril formation by polyphenols: molecular mechanisms, challenges, and prospective solutions. 多酚抑制纤维形成：分子机制、挑战和前瞻性解决方案。
IF 4.3 2区 化学
Chemical Communications Pub Date : 2024-06-27 DOI: 10.1039/d4cc00822g
Shilpa Sharma, Shashank Deep
{"title":"Inhibition of fibril formation by polyphenols: molecular mechanisms, challenges, and prospective solutions.","authors":"Shilpa Sharma, Shashank Deep","doi":"10.1039/d4cc00822g","DOIUrl":"10.1039/d4cc00822g","url":null,"abstract":"<p><p>Fibril formation is a key feature in neurodegenerative diseases like Alzheimer's, Parkinson's, and systemic amyloidosis. Polyphenols, found in plant-based foods, show promise in inhibiting fibril formation and disrupting disease progression. The ability of polyphenols to break the amyloid fibrils of many disease-linked proteins has been tested in numerous studies. Polyphenols have their distinctive mechanism of action. They behave differently on various events in the aggregation pathway. Their action also differs for different proteins. Some polyphenols only inhibit the formation of fibrils whereas others break the preformed fibrils. Some break the fibrils into smaller species, and some change them to other morphologies. This article delves into the intricate molecular mechanisms underlying the inhibitory effects of polyphenols on fibrillogenesis, shedding light on their interactions with amyloidogenic proteins and the disruption of fibril assembly pathways. However, addressing the challenges associated with solubility, stability, and bioavailability of polyphenols is crucial. The current strategies involve nanotechnology to improve the solubility and bioavailability, thus showing the potential to enhance the efficacy of polyphenols as therapeutics. Advancements in structural biology, computational modeling, and biophysics have provided insights into polyphenol-fibril interactions, offering hope for novel therapies for neurodegenerative diseases and amyloidosis.</p>","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141247671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Atomic-scale Origin of the Enantiospecific Decomposition of Tartaric Acid on Chiral Copper Surfaces
IF 4.9 2区 化学
Chemical Communications Pub Date : 2024-06-27 DOI: 10.1039/d4cc02384f
Avery S Daniels, Andrew Gellman, E. Charles Sykes
{"title":"Atomic-scale Origin of the Enantiospecific Decomposition of Tartaric Acid on Chiral Copper Surfaces","authors":"Avery S Daniels, Andrew Gellman, E. Charles Sykes","doi":"10.1039/d4cc02384f","DOIUrl":"https://doi.org/10.1039/d4cc02384f","url":null,"abstract":"The origin of the enantiospecific decomposition of L- and D-tartaric acid on chiral Cu surfaces is elucidated on a structure-spread domed Cu(110) crystal by spatially resolved XPS and atomic-scale STM imaging. Extensive enantiospecific surface restructuring leads to the formation of surfaces vicinal to Cu(14,17,2) which are responsible for the enantiospecificity.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":null,"pages":null},"PeriodicalIF":4.9,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reduction of (pddi)Cr reveals redox noninnocence via C-C bond formation amidst competing electrophilicity: [(cpta)CrMen]- (n = 0, 1) and [(pta)Cr]. (ppdi)Cr的还原显示了在相互竞争的亲电性中通过C-C键形成的氧化还原非中立性：[(cpta)CrMen]-（n = 0，1）和[(pta)Cr]。
IF 4.3 2区 化学
Chemical Communications Pub Date : 2024-06-27 DOI: 10.1039/d4cc01690d
Alexander A D'Arpino, Peter T Wolczanski, Samantha N MacMillan, Thomas R Cundari, Mihail R Krumov
{"title":"Reduction of (pddi)Cr reveals redox noninnocence <i>via</i> C-C bond formation amidst competing electrophilicity: [(cpta)CrMe<sub><i>n</i></sub>]<sup>-</sup> (<i>n</i> = 0, 1) and [(pta)Cr]<sup />.","authors":"Alexander A D'Arpino, Peter T Wolczanski, Samantha N MacMillan, Thomas R Cundari, Mihail R Krumov","doi":"10.1039/d4cc01690d","DOIUrl":"10.1039/d4cc01690d","url":null,"abstract":"<p><p>Reversible cyclopropane formation is probed as a means of redox noninnocence in diimine/diamide chelates <i>via</i> reduction and complex anion formation. Competition from imine attack renders complications in the latter approach, and electrochemical measurements with calculational support provide the rationale.</p>","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141309677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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