Results 71 to 80 of about 1,721 (198)

Metallkomplexe mit biologisch wichtigen Liganden, LXX [PDF]

, 1994
Metal Complexes of Biologically Important Ligands, LXX[1].- Synthesis, Stereochemistry and Reactions of Ruthenium(II) and Osmium(II) Complexes with -Amino Carboxylates[Note ][Herrn Professor Helmut Werner zum 60.
Ahmad, Alcock, Brunner, Clarke, Coffey, Deshpande, Freeman, Fuhlhage, Hiraki, Hiraki, Horino, Ito, Joseph, Kolomnikov, Krämer, Lampeka, Levison, Nakagawara, Natarajan, Purcell, Robinson, Robinson, Robinson, Roy, Sanchez-Delgado, Sheldrick, Sheldrick, Sheldrick, Sun, Vol'pin, Wagner, Watanabe, Werner, Zelechonok   +33 more
core   +1 more source

Development of a Copper‐Free Click Reaction for Asymmetric Rh Diene Catalysis Under Confinement

Advanced Synthesis &Catalysis, Volume 368, Issue 1, January 2026.
A copper‐free amino–yne click reaction enables the selective functionalization of chiral diene ligands with both soluble and immobilized amines. Substituent‐controlled stereoselectivity affords (E)‐ and (Z)‐enaminone ligands, which are converted into Rh complexes for asymmetric catalysis under homogeneous and heterogeneous conditions.
Manuel Kirchhof, Sanja Krause, Liam Rautenbach, Jakoba Wacker, Ann‐Katrin Beurer, Hoang‐Huy Nguyen, Wolfgang Frey, Yvonne Traa, Deven P. Estes, Anna Zens, Sabine Laschat   +10 more
wiley   +1 more source

Synthesis of 2-Aminonicotinonitriles via Photodecarboxylation of Azirine-2-Carboxylic Acids

Molbank
2-Aminonicotinonitriles represent an important class of heterocycles with diverse biological activities. Herein, we report an unexpected photochemical transformation of azirine-2-carboxylic acids leading to the formation of 2-aminonicotinonitrile ...
Julia I. Pavlenko, Mikhail S. Novikov, Anastasiya V. Agafonova   +2 more
doaj   +1 more source

Synthetic Strategies to Access Fluorinated Azoles

European Journal of Organic Chemistry, Volume 28, Issue 47, December 15, 2025.
This review highlights recent synthetic strategies for introducing fluorine groups (mono‐, di‐, and trifluoromethylation) into 11 major azole classes, identifying research gaps to inform future innovations in materials science, medicinal chemistry, and biomedical research.
Mohammed K. Abd El‐Gaber, Mario Djugovski, Tzu‐Yu Huang, Sweta Adhikari, Sudeshna Roy   +4 more
wiley   +1 more source

2H-Pyrrole und Pyrrole aus 3-Phenyl-2H-azirinen

CHIMIA, 1976
Vinyl-phosphonium salts [2] and phenyl-vinyl-sulfone or divinylsulfone react with benzonitril-methylides a (which are photochemically generated from 3-phenyl-2H-azirines 1 and 2) to give, via the nonisolated intermediates of type b, 2H-pyrrole 4 and the
Ulrich Widmer, Nikolas Gakis, Bruno Arnet, Heinz Heimgartner, Hans Schmid   +4 more
doaj   +1 more source

Von Sauerstoff zu Tellur: Der Einfluss des Chalkogenatoms auf die Nucleophilie und Basizität von Isochalkogenharnstoff‐basierten Katalysatoren

Angewandte Chemie, Volume 137, Issue 48, November 24, 2025.
Der Einbau verschiedener Chalkogenatome (O, S, Se oder Te) in häufig verwendete Isochalkogenharnstoff‐Organokatalysatoren ermöglicht die Feinabstimmung ihrer Nucleophilie und Basizität. Kinetische und thermodynamische Deskriptoren für die molekularen Eigenschaften der Katalysatoren werden als Werkzeuge zur Vorhersage ihrer Effizienz eingeführt und in ...
Lotte Stockhammer, Kevin Kasten, Andreas Eitzinger, Lukas S. Vogl, Magdalena Piringer, David Weinzierl, Armin R. Ofial, Andrew D. Smith, Mario Waser   +8 more
wiley   +1 more source

From Oxygen to Tellurium: The Impact of the Chalcogen on Nucleophilicities and Basicities of Isochalcogenourea Catalysts

Angewandte Chemie International Edition, Volume 64, Issue 48, November 24, 2025.
Incorporation of different chalcogen atoms allows for the fine‐tuning of nucleophilicity and basicity of commonly used isochalcogenourea organocatalyst scaffolds. Kinetic and thermodynamic descriptors for the molecular properties of the catalysts are introduced as tools to predict their efficiency and tested in acyl transfer and allenoate activation ...
Lotte Stockhammer, Kevin Kasten, Andreas Eitzinger, Lukas S. Vogl, Magdalena Piringer, David Weinzierl, Armin R. Ofial, Andrew D. Smith, Mario Waser   +8 more
wiley   +1 more source

Intermolecular alkyl radical addition to methyl 2-(2,6-Dichlorophenyl)-2H-azirine-3-carboxylate [PDF]

, 2012
The 2H-azirine 1 acts as an effective radical acceptor for secondary and tertiary alkyl iodides mediated by triethylborane.
Alves, Maria José Chão, Fortes, Gil, Guimaraes, Emanuel, Lemos, A.   +3 more
core  

Aziridine and azirine carboxylic esters [PDF]

Pure and Applied Chemistry, 1996
Abstract
Binne Zwandenburg, L. Thijs
openaire   +1 more source

Marine pharmacology in 2009-2011: marine compounds with antibacterial, antidiabetic, antifungal, anti-inflammatory, antiprotozoal, antituberculosis, and antiviral activities; affecting the immune and nervous systems, and other miscellaneous mechanisms of action. [PDF]

, 2013
The peer-reviewed marine pharmacology literature from 2009 to 2011 is presented in this review, following the format used in the 1998–2008 reviews of this series.
A. D. Rodriguez, A. M. S. Mayer, N. Fusetani, TAGLIALATELA SCAFATI, ORAZIO   +3 more
core   +2 more sources