Results 191 to 200 of about 15,609 (285)

1‐Azabicyclo[1.1.0]butanes (ABBs) on the Map: Mechanistic Pathways for Catalytic Ring Opening and Functionalizations

Angewandte Chemie, EarlyView.
Catalytic strain‐release ring opening and functionalizations of 1‐azabicyclo[1.1.0]butanes (ABBs) represent a promising strategy for accessing diverse azetidine products. These transformations proceed via polar pathways, radical pathways, and hybrid mechanisms that combine both.
James Shao‐Jiun Yang, Hsuan‐Hung Liao   +1 more
wiley   +1 more source

Synthesis and Reactivity of Heteroleptic U⁴⁺ Alkyl, Benzyl, and Hydride Imidophosphorane Complexes. [PDF]

Inorg Chem
Tateyama H, Bernbeck MG, Nero TR, Wilkinson GR, Engle KS, Betts GM, La Pierre HS.   +6 more
europepmc   +1 more source

Counterion Dynamics in Chiral Supramolecular Polymerization

Angewandte Chemie, EarlyView.
A single counterion acts as a dynamic structural element directing pathway‐dependent supramolecular polymerization. Subtle counterion repositioning governs molecular packing, aggregate morphology, supramolecular chirality, and asymmetry amplification. ABSTRACT Counterions have been studied in a broad range of chemical and biological systems, and their ...
Camila Montañez‐Moyano, Timo Krüger, Alejandro Martínez‐Manjarrés, Gustavo Fernández   +3 more
wiley   +1 more source

Base-Promoted <i>N</i>-Heteroaryl C-H Oxidative Coupling With Alcohols for <i>N</i>-heteroaryl Ether Synthesis. [PDF]

Organic Synth
Graf SL, Bandar JS, Hazra PS, Brown MK.
europepmc   +1 more source

A Mechanical Planar Chiral Rotaxane Induces Single‐Handed Helicity in a Twisted Perylene Diimide

Angewandte Chemie, EarlyView.
A mechanical planar chiral rotaxane (Rmp) is used to induce single‐handed helical chirality (M) in a perylene diimide chromophore, resulting in persistent circular dichroism (CD) and circularly polarised luminescence (CPL). ABSTRACT The twisting of chromophores such as perylene diimides (PDIs) into helical structures affords chiroptical properties from
Thomas E. Lawson, Denis Hartmann, Artemijs Krimovs, Qilong Sun, Robert Pal, Timothy A. Barendt   +5 more
wiley   +1 more source

Synthesis of Substituted Chromanes and Tetrahydroquinolines via Tandem 1,2-Silyl Shift-Friedel-Crafts Cyclization. [PDF]

J Org Chem
Ubaidullajevs A, Kroṇkalne R, Mishnev A, Turks M.   +3 more
europepmc   +1 more source

A de‐novo Approach Towards Divergent [3+2π/σ] Photocycloadditions of Nitrones via Assembly‐Controlled Kinetic Electron Transfer Gating

Angewandte Chemie, EarlyView.
A metal‐free photocatalytic platform converts nitrones into 4‐isoxazolines and oxa–aza–bicycloheptanes through divergent [3+2π/σ] cycloadditions. Assembly‐controlled kinetic electron transfer gating dictates substrate activation, enabling selective reactivity beyond thermodynamic expectations.
Nayan Saha, Rajesh Kancherla, Jorge Escorihuela, Shana Chandran, Mrinal K. Bera, Magnus Rueping, Burkhard König   +6 more
wiley   +1 more source

Electrochemical Phosphorochalcogenations for the Synthesis of Phosphorochalcogenothioates. [PDF]

J Org Chem
Karmakar I, Huang XW, Chen YH, Cheng CA, Kuo PC, Lee CF.   +5 more
europepmc   +1 more source

A Mesoionic Platform for Persistent Anionic Nitrogen‐Centered Radicals

Angewandte Chemie, EarlyView.
Charge did not meet spin: Mesoionic 1,2,3‐triazines undergo reversible one‐electron reduction to persistent anionic nitrogen‐centered radicals. Electron paramagnetic resonance, single‐crystal x‐ray diffraction, and calculations reveal nitrogen‐localized spin and structural reorganization, while crystalline salts show clean redox cycling.
Deepak Ranolia, Aleksandr Koronatov, Yogendra Kumar, Mamta Sham Lal, Boris Tumansky, Alexander Kaushansky, Natalia Fridman, Malachi Noked, Mark Gandelman   +8 more
wiley   +1 more source

Mechanistische Diversität in der photoangeregten Radikal‐Redoxchemie: Eine kritische Evaluierung

Angewandte Chemie, EarlyView.
Für viele prominente Beispiele der Photoredox‐Katalyse wird angenommen, dass sie über die Anregung einer offenschaligen („open‐shell“) Zwischenform des Katalysators ablaufen. Es wird jedoch intensiv darüber diskutiert, ob solche Mechanismen realistisch sind und, falls ja, wie genau sie ablaufen können.
Samuel J. Horsewill, Ryan Phelps, Joshua P. Barham, Daniel J. Scott   +3 more
wiley   +1 more source