Results 21 to 30 of about 2,798 (207)

Mesoionische N‐Heterocyclische Olefine, Imine, Thione, Phosphinidene und ihre Anwendung in der Katalyse

Angewandte Chemie, Volume 138, Issue 3, 16 January 2026.
Dieser Mini‐Review behandelt die neuesten Fortschritte bei der Synthese, Reaktivität und metallfreien katalytischen Verwendung von mesoionischen N‐heterocyclischen Olefinen (mNHOs), Iminen (mNHIs), Thionen (mNHTs) und Phosphinidenen (mNHPs). Kurzzusammenfassung Übergangsmetallverbindungen sind allgemein für ihre Fähigkeit bekannt, kleine Moleküle zu ...
Subir Maji, Sreejyothi P., Max M. Hansmann, Swadhin K. Mandal   +3 more
wiley   +1 more source

Asymmetric Aziridination of Allylic Carbamates Using Ion‐Paired Rhodium Complexes and Extrapolation to C─H Amination of Phenethyl Carbamates

Angewandte Chemie, Volume 137, Issue 29, July 14, 2025.
Aziridination of alkenes is an important route to chiral nitrogen‐containing building blocks. We report that carbamate‐functionalized allylic alcohols undergo highly enantioselective aziridination using achiral dimeric Rh complexes ion‐paired with cinchona alkaloid‐derived chiral cations.
Arthur R. Lit, Shotaro Takano, Christian Zachau, Ioana Băltărețu, Robert J. Phipps   +4 more
wiley   +2 more sources

Mesoionic N‐Heterocyclic Olefins, Imines, Thiones, Phosphinidenes and Their Application in Catalysis

Angewandte Chemie International Edition, Volume 65, Issue 3, 16 January 2026.
This minireview covers recent advances in the synthesis, reactivity, and metal‐free catalytic uses of mesoionic N‐heterocyclic olefins (mNHOs), imines (mNHIs), thiones (mNHTs), and phosphinidenes (mNHPs). Abstract Transition metal compounds are widely known for their ability to activate small molecules and are excellent catalysts for a wide range of ...
Subir Maji, Sreejyothi P, Max M. Hansmann, Swadhin K. Mandal   +3 more
wiley   +1 more source

Experimental and Analytical Tools for the Chemical Recycling of Engineering Plastics – A Multi‐Scale Pyrolysis Study on Polydicyclopentadiene

Macromolecular Rapid Communications, Volume 46, Issue 23, December 5, 2025.
The presented work demonstrates the importance of a comprehensive assessment of engineering plastics pyrolysis on the example of Polydicyclopentadiene. Analyses in µg‐, mg‐, and lab‐scale provide insight into mechanisms, yields, and products. An analytical and experimental toolset is showcased, by which the foundation for the assessment of pyrolysis as
Michael Zeller, Salar Tavakkol, Dieter Stapf   +2 more
wiley   +1 more source

Quantitative and Stereoisomeric Determination of Light Biomarkers in Crude Oil and Coal Samples [PDF]

, 1998
Indans and tetralins are considered biological markers (biomarkers). These C9-C11 hydrocarbons are present in small amounts in organic geological samples. Methyl substituted indans or tetralins may possess a stereogenic center (carbon).
Armstrong, Daniel W., Berthod, Alain, Gahm, Kyung H., Wang, Xiande   +3 more
core   +2 more sources

Remarks on the Tithonian- Berriasian ammonite biostratigraphy of west central Argentina [PDF]

, 2015
Fil: Riccardi, Alberto Carlos. División Paleozoología Invertebrados. Facultad de Ciencias Naturales y Museo.
Riccardi, Alberto Carlos
core   +2 more sources

LRRC8A Regulates Outer Hair Cell Volume and Electromotility and is Required for Hearing

Advanced Science, Volume 12, Issue 41, November 6, 2025.
This study identifies LRRC8A‐dependent volume‐regulated anion channels (VRACs) as essential for cochlear outer hair cells' electromotility and auditory signal amplification. LRRC8A deficiency disrupts cell volume control, impairs auditory sensitivity, and causes deafness, while targeted LRRC8A re‐expression restores auditory function.
Shengnan Wang, Yuehui Xi, Qiaojun Fang, Sai Shi, Fei Wang, Fuyu Xian, Zhongyang Zhang, Yuxin Yang, Xishuo Jin, Xiaomin Wang, Chen Cao, Hailin Zhang, Nikita Gamper, Zhigang Xu, Haitao Shen, Ping Lv   +15 more
wiley   +1 more source

Bioactive Indanes: Design, synthesis and bioactivity investigation of 2,2-substituted Indane derivatives, a new bioactive Indane scaffold

Bioorganic Chemistry
The indane scaffold, prevalent in bioactive natural products, underpins numerous therapeutics. Our group developed a series of 1,2-indane dimers, including PH46A (9), for inflammatory and autoimmune diseases. This study details the design, synthesis and characterisation of 21 compounds, including 2,2-disubstituted indanones (16a-16h), indanols (17a-17h)
Tao, Zhang, Kit, Chan, Abdulilah, Ece, Robin, Daly, Aoife, Cannon, Gaia A, Scalabrino, Neil, Frankish, Jacintha, O'Sullivan, Padraig, Fallon, Helen, Sheridan   +9 more
openaire   +2 more sources

3‐Dicyanomethylene‐Substituted Thienothiophenes as the Terminal Units in Non‐Fullerene Electron Acceptor Molecules for Organic Photovoltaics

Chemistry – An Asian Journal, Volume 20, Issue 16, August 14, 2025.
3‐Dicyanomethylene thienothiophenes (CNTTs), a new series of electron acceptor units, were developed and incorporated into non‐fullerene acceptors (NFAs). The CNTT‐based NFAs exhibited favorable electronic structures and packing structures and thus enabled organic photovoltaic devices to achieve a power conversion efficiency of 10% when blended with ...
Kensuke Shibahashi, Masato Nakamura, Kohsuke Kawabata, Kazuo Takimiya   +3 more
wiley   +1 more source

Marines Tertiär (Ober-Miozän) als Höhlenfüllung im Zechstein des Hüggels bei Osnabrück (West-Niedersachsen) : mit 7 Tabellen [PDF]

, 2012
An der Basis einer Brekzie aus zechsteinzeitlichen Karbonatgesteinen konnten auf dem Hüggel-Horst Sedimente mit mariner Fauna (Ober-Miozän: Langenfelde-Gram) beobachtet werden. Ihre Fossilführung und Petrographie wird beschrieben. Sie sind in Höhlen, die
Harms, Franz-Jürgen
core