Results 101 to 110 of about 6,146 (188)

Durch anomere Amide ermöglichte divergente Synthese unsymmetrischer Harnstoffe, Carbamate, Thioester und Amide aus Aldehyden

Angewandte Chemie, Volume 138, Issue 37, 7 September 2026.
Eine divergente Aldehyd‐Funktionalisierungssequenz, ermöglicht durch ein anomeres Amid, erlaubt den Ein‐Topf‐Zugang zu unsymmetrischen Harnstoffen, Carbamaten, Thiocarbamaten, Thioestern und Amiden. Entscheidend für diese Transformation ist die Bildung von N‐Boc‐Hydroxamat‐Intermediaten, die als Plattformen für eine orthogonale Aktivierung über Lossen ...
Jasper L. Tyler, Meiyi Zeng, Julius Wiener, Marie‐Christin Leusmann, Colin Stein, Constantin G. Daniliuc, Frank Glorius   +6 more
wiley   +1 more source

Anomeric Amide Enabled Divergent Synthesis of Unsymmetrical Ureas, Carbamates, Thioesters, and Amides From Aldehydes

Angewandte Chemie International Edition, Volume 65, Issue 37, 7 September 2026.
An anomeric amide‐enabled divergent aldehyde functionalization sequence provides one‐pot access to unsymmetrical ureas, carbamates, thiocarbamates, thioesters, and amides. Key to this transformation is the formation of N‐Boc‐hydroxamate intermediates, which serve as platforms for orthogonal activation via Lossen‐type rearrangements, single‐electron ...
Jasper L. Tyler, Meiyi Zeng, Julius Wiener, Marie‐Christin Leusmann, Colin Stein, Constantin G. Daniliuc, Frank Glorius   +6 more
wiley   +1 more source

Revised Formal Total Synthesis of Dehydro-δ-Viniferin and Anigopreissin A

Organics
This work presents a revised total synthesis of two pharmacologically relevant benzofurans using newly developed environmentally friendly methodologies.
Alessandro Santarsiere, Marianna Volgare, Lucia Chiummiento   +2 more
doaj   +1 more source

Correction to Iridium-Catalyzed Hydrogen Transfer: Synthesis of Substituted Benzofurans, Benzothiophenes, and Indoles from Benzyl Alcohols

, 2016
Correction to Iridium-Catalyzed Hydrogen Transfer: Synthesis of Substituted Benzofurans, Benzothiophenes, and Indoles from Benzyl ...
Kai Rossen (1458208), Bruno Anxionnat (1789159), Domingo Gomez Pardo (1555252), Gino Ricci (1555258), Janine Cossy (1457317)   +4 more
core   +1 more source

Overview of Photochemical Reactions for the Synthesis of Aza and Oxa‐Spirocyclic Compounds Under Visible Light Irradiation

Chemistry &Biodiversity, Volume 23, Issue 9, September 2026.
This review presents the visible‐light‐mediated photochemical reaction for the synthesis of aza, oxa, and aza–oxa spirocyclic compounds via photoinduced electron transfer (PET), hydrogen atom transfer (HAT), single‐electron transfer (SET), or energy transfer (EnT) pathways.
Annu Bhardwaj, Shivangi Jaiswal, Khushboo Bhardwaj, Swapnil Sharma, Jaya Dwivedi   +4 more
wiley   +1 more source

Endophytic Fungi Natural Factories of Novel Bioactive Compounds

Chemistry &Biodiversity, Volume 23, Issue 9, September 2026.
This review provides a systematic analysis of 242 natural products isolated from 42 genera of endophytic fungi, highlighting their remarkable structural diversity and broad spectrum of biological activities . ABSTRACT Endophytic fungi represent a prolific and chemically diverse source of novel specialized metabolites with significant pharmacological ...
Dilmurod Murodullayev, Jakhongir Movlanov, Liu Wei, Wei Liu, Maksud Isokov, Santosh Kumar Bose, Fazliddin Kobilov, Zamira Djumayeva, Buston Islamov, Jamila Sherkulova, Zafar Matyakubov, Muniskhon Meylieva, Munisa Ergasheva, Diyor Abduraxmanov, Guozheng Huang, Hongchen Jiang, Kakhramon Davranov, Guohui Pan, Nigora Rustamova   +18 more
wiley   +1 more source

Tandem [4 + 2]/[2 + 2] Cycloaddition Reactions Involving Indene or Benzofurans and Arynes

, 2016
The reaction of arynes with indene/benzofurans has been developed. The arynes were generated from 2-(trimethylsilyl)­aryl triflates by the fluoride-induced 1,2-elimination react with indene or various benzofurans proceeding via a cascade reaction ...
Sachin Suresh Bhojgude (1458001), Manikandan Thangaraj (1784476), Akkattu T. Biju (1457998), Eringathodi Suresh (595864)   +3 more
core   +1 more source

Antioxidant Chemistry of Phenolics in Chinese Herbal Medicines: A Holism‐Based Review

Chemistry &Biodiversity, Volume 23, Issue 9, September 2026.
Phenolic antioxidants in CHMs mainly include chalcone, stilbene, flavonoid, xanthone, and Diels–Alder‐type adducts. They undergo direct and indirect pathways to exert antioxidant action. The indirect pathway is transition metal‐chelating, while the direct pathway comprises several redox‐based reactions (e.g., SET and HAT) and RAF reactions.
Xican Li
wiley   +1 more source

Temperature‐Controlled Diene Cyclization Toward Trifluoromethyl Biphenyl Derivatives: Synthetic and Computational Study

ChemCatChem, Volume 18, Issue 18, 28 September 2026.
Synthesis of functionalized polyfluorinated biphenyl moieties via one‐pot Heck coupling followed by temperature‐controlled cyclization reaction of polyfluoro diene intermediate. The cyclization reaction proceeds via a palladium‐catalyzed β‐fluoro elimination step.
Bálint Varga, Khaled T. Jaradat, Martin Polyák, János Kele‐Jókuthy, Attila Herczegh, András Kotschy, Zoltán Novák, János Daru   +7 more
wiley   +1 more source

Piptadenia gonoacantha Leaf Extracts: Seasonal and Phenological Effects on Chemical Profile, Antioxidant and Photoprotective Potential

ChemistrySelect, Volume 11, Issue 36, 22 September 2026.
The front cover image demonstrates how seasonal environmental factors influence the phenolic composition and bioactivity of Piptadenia gonoacantha leaves. The visual elements represent ultrasound‐assisted extraction and chromatographic separation, while the light and natural images reflect how solar radiation and phenological stage directly influence ...
Nicole Werle da Silva, Maria Luiza de Vargas Mallmann, Lucas Mironuk Frescura, Gustavo Andrade Ugalde, Camilo Amaro de Carvalho, Marcelo Barcellos da Rosa   +5 more
wiley   +1 more source