Results 131 to 140 of about 4,461 (274)

Stabilizing the Hexacyanotrimethylenecyclopropane Electron Acceptor—Structural and Photophysical Characterization

Angewandte Chemie International Edition, EarlyView.
An improved low‐temperature synthesis enables the first comprehensive structural and spectroscopic characterisation of neutral hexacyanotrimethylenecyclopropane (CN6CP). Combined IR/Raman, UV–Vis and ssNMR analyses reveal a deeper understanding of its oxidation‐state‐dependent charge redistribution, σ‐aromaticity of the cyclopropane core, and redox ...
Jan P. Soyka, Alok Mahata, Anja Wiesner, Jennifer Hartfiel, Christian E. Halbig, Katharina J. Franke, Ute Resch‐Genger, Biprajit Sarkar, Siegfried Eigler   +8 more
wiley   +1 more source

Preparation and reactivity of some stable nitrile oxides and nitrones

ARKIVOC, 2000
Paul W. Groundwater, Miklós Nyerges, Imre Fejes, David E. Hibbs, David Bendell, Rosaleen J. Anderson, Alexander McKillop, Toqir Sharif, Weimin Zhang   +8 more
doaj   +1 more source

Intramolecular 1,3-dipolar cycloaddition reaction of novel 2-azetidinone-tethered alkenyl nitrile oxides

ARKIVOC, 2004
Benito Alcaide, Pedro Almendros, Elena Sáez   +2 more
doaj   +1 more source

Correction: Novel valdecoxib derivatives by ruthenium(ii)-promoted 1,3-dipolar cycloaddition of nitrile oxides with alkynes - synthesis and COX-2 inhibition activity. [PDF]

Medchemcomm, 2018
Roscales S, Bechmann N, Weiss DH, Köckerling M, Pietzsch J, Kniess T.   +5 more
europepmc   +1 more source

Geminal Difunctionalization of Ketones via C─S Bond Insertion of Photogenerated Donor–Donor Diazo Compounds

Angewandte Chemie International Edition, EarlyView.
Geminal difunctionalization of readily available building blocks provides rapid access to molecular complexity. This work introduces a strategy for installing two distinct functional groups on a carbonyl carbon by transforming it into a donor–donor diazo compound, enabling both batch and flow applications with broad solvent compatibility.
Vincent George, Aryaman Pattanaik, Daniel Maddox, Lukas M. Sigmund, Giovanna Mejia, Sara Pahlén, Simon O. Angerer, Maria Schmoll, Lisa Marie Schneider, Nidhal Selmi, Mikhail Kabeshov, Giulia Bergonzini, Julia Rehbein, Burkhard König   +13 more
wiley   +1 more source

Synthesis of spiroisoxazolines through cycloadditions of nitrile oxides with 3-methylenequinuclidine

ARKIVOC, 2005
Connie K. Y. Lee, Christopher J. Easton, G. Paul Savage, Gregory W. Simpson   +3 more
doaj   +1 more source

Cycloaddition reactions of nitrosoalkenes, azoalkenes and nitrile oxides mediated by hydrotalcite

ARKIVOC, 2010
Americo Lemos, João Paulo Lourenço
doaj   +1 more source

1,3-Dipolar Cycloaddition of Nitrile Imines and Nitrile Oxides to Exocyclic C=N Bonds-An Approach to <i>Spiro</i>-N-Heterocycles. [PDF]

Int J Mol Sci
Petrova JV, Kukushkin ME, Beloglazkina EK.   +2 more
europepmc   +1 more source

Forcing the Side‐on π‐Coordination of a C≡C Triple Bond to Technetium Using the As,CC,As Alkyne Pincer Ligand 1,2‐Bis(2‐(diisopropylarsaneyl)‐4‐(trifluoromethyl)phenyl)Ethyne

Angewandte Chemie International Edition, EarlyView.
Technetium alkyne complexes have eluded isolation for decades with the only indicators for their existence being the isolation of vinylidene carbenes or their follow‐up reaction products despite plentiful of reports for neighboring elements. Stable, crystalline Tc(III) and Tc(V) alkyne complexes (and their Re analogs) have now been prepared and fully ...
Maximilian Roca Jungfer, Moritz Johannes Ernst, Lukas Eberle, Marius Kesselring, Guilhem Claude, Joachim Ballmann   +5 more
wiley   +1 more source

1,3-Dipolar Cycloaddition of Nitrile Oxides and Nitrilimines to (-)-β-Caryophyllene: Stereoselective Synthesis of Polycyclic Derivatives and Their Biological Testing. [PDF]

Int J Mol Sci
Shybanov DE, Kukushkin ME, Grishin YK, Roznyatovsky VA, Tafeenko VA, Abo Qoura L, Pokrovsky VS, Yarovaya OI, Belyaevskaya SV, Volobueva AS, Esaulkova IL, Zarubaev VV, Zarubaev VV, Beloglazkina EK.   +13 more
europepmc   +1 more source