Results 151 to 160 of about 252,458 (275)

Cycloaddition of nitrile oxides to cyclic and acyclic alpha,beta-unsaturated amides. Frontier orbital interactions and an unexpected steric drift determine regiochemistry

, 1999
The regiochemistry of the cycloadditions of nitrile oxides to amides has been investigated experimentally and through DFT ...
CARAMELLA, PIERLUIGI, Falzoni, Mario, Reami, Daniela, QUADRELLI, PAOLO   +3 more
core  

Synthesis of Large‐ and Medium‐Sized Heterobiaryl Atropisomeric Rings and Atropopeptides by Catalytic Intramolecular SNAr

Angewandte Chemie, EarlyView.
Catalytic, intramolecular N‐heterocycle arylation by nucleophilic aromatic substitution (SNAr) is now available for synthesis of highly strained macrocycles and medium‐sized heterobiaryl atropisomeric rings, including atropopeptides. Key to the approach is the ability to generate a strong base catalytically, taking advantage of base‐embedding ...
Alireza Abbasi Kejani, Paritosh Dey, Nicholas H. Stillman, Daniel M. Andrade, Michal Šimek, Martin Dračínský, Daniel Bím, Paulo H. S. Paioti   +7 more
wiley   +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 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

Redox‐Modulated σ‐Bond Reactivity in a Radical‐Anion Dimer

Angewandte Chemie International Edition, Volume 65, Issue 44, 26 October 2026.
A radialene‐based radical anion σ‐dimer comprising an elongated C‐C bond exhibits orthogonal stimuli responsiveness. Homolytic cleavage of the dimer to the radical state is triggered by mechanical strain and high temperature. Dimer scission is also achieved via oxidation, resulting in formation of neutral radialenes.
Sushil Ranjan Bhatta, Jonathan H. Gillen, Amaya T. Jayaweera, Fuead Hasan, Diana P. Merenkov, Hai Zhao, Sepideh Asgari, Arthur H. Winter, Christopher M. Bejger   +8 more
wiley   +1 more source

Gold Single‐Atom Catalysts Enable Selective Shuttle Hydrochlorination of Alkynes

Angewandte Chemie International Edition, EarlyView.
Gold single‐atom catalysts on activated carbon enable heterogeneous shuttle hydrochlorination of terminal alkynes to vinyl chlorides with high chemo‐ and stereo‐selectivity thanks to cooperation between Au(I) sites and the support. The catalytic system combines broad substrate compatibility, simplified separation, and recoverability, paving the way for
Marc‐Eduard Usteri, Eva J. Meeus, Christian Zachau, Seung‐Eun Choi, Aram Bugaev, Milivoj Plodinec, Sharon Mitchell, Bill Morandi, Javier Pérez‐Ramírez   +8 more
wiley   +1 more source

Activation of Metal Complexes With Ultrasound Waves for Targeted Anticancer Therapy

Angewandte Chemie International Edition, EarlyView.
Ultrasound enables non‐invasive activation of metal‐based therapeutics deep within tumors. Acoustic cavitation can drive sonodynamic reactive oxygen species generation or mechanochemical metal–ligand bond dissociation, enabling controlled release of bioactive payloads.
Félix Grosjean, Nicolás Montesdeoca, Gilles Berger, Johannes Karges   +3 more
wiley   +1 more source

Hydrogen-Tolerant CuO/TiO₂ Catalysts Enabled by Oxygen Anchoring for Nitrile Hydrogenation. [PDF]

Angew Chem Int Ed Engl
Fan T, Zhao H, Zhang X, Li J, Li T, Shen H, Gao S, Li J, Long Y, Ma J.   +9 more
europepmc   +1 more source

Ruthenium-catalyzed cycloadditions of 1-haloalkynes with nitrile oxides and organic azides: synthesis of 4-haloisoxazoles and 5-halotriazoles. [PDF]

Chemistry, 2014
Oakdale JS, Sit RK, Fokin VV.
europepmc   +1 more source

Biocatalytic Synthesis of Isoxazolines Enabled by Cryptic Nitrile Oxide Formation by a Vanadium-Dependent Chloroperoxidase. [PDF]

Angew Chem Int Ed Engl
Sharma M, Biegasiewicz KF.
europepmc   +1 more source