Results 141 to 150 of about 4,722 (253)

Nitrooxylation in Organic Synthesis: From Classical Nitrate Ester Formation to Modern Catalytic Strategies

Chemistry – A European Journal, EarlyView.
Nitrooxylation—the installation of nitrate esters (–ONO2) has evolved from classical mixed‐acid protocols to catalytic and mechano‐, flow‐, photo‐, and electrochemical strategies. This review delineates ionic and radical manifolds for C–ONO2 bond formation, emphasizing mechanistic control, selected substrate scope, and selectivity.
Jayanta Dey, Dmitry Katayev
wiley   +1 more source

Connecting Brown Carbon Composition and Physicochemical Properties of Aqueous Urban PM_2.5 to their Photosensitized Production of Singlet Oxygen and Organic Triplet Excited States. [PDF]

Environ Sci Technol
Lyu Y, Li Y, Ma R, Zhou T, Borduas-Dedekind N, Nah T.   +5 more
europepmc   +1 more source

Cyclopropylamine‐Derived Distonic Iminium Radicals: Photoinduced Strategies in Chemo‐ and Stereo‐Selective Synthesis

Chemistry – A European Journal, EarlyView.
Cyclopropylamines have emerged as powerful photocatalytic building blocks. Upon light‐induced single‐electron oxidation, they undergo strain‐release ring opening to generate distonic iminium radicals that enable diverse transformations, including ring‐opening functionalization, formal [3 + 2] cycloadditions, radical cascades, and asymmetric bond ...
Maria Chiara Cabua, Alberto Luridiana, Francesco Secci, Emanuele Cocco   +3 more
wiley   +1 more source

Photobleaching of Imidazole Brown Carbon in Single Levitated Aerosol Particles. [PDF]

J Phys Chem A
Zhang X, Meehan PE, Knight JW, Orr-Ewing AJ, Cotterell MI.   +4 more
europepmc   +1 more source

Hybrid Macrocyclic Peptides — Synthetic Strategies to Diversify and Cyclize Peptide Libraries in Phage Display Selections

Chemistry – A European Journal, EarlyView.
Hybrid macrocyclic peptides unite genetically encoded peptide libraries with the structural complexity of synthetic small molecules. This Review critically analyzes phage‐compatible cyclization and diversification chemistries, highlights emerging opportunities beyond traditional cysteine‐based approaches, and outlines how future advances may enable the
Titia Rixt Oppewal, Clemens Mayer
wiley   +1 more source

Photochemical synthesis of oxiranes using DABSO-activated sulfinates and allylic peroxides. [PDF]

Nat Commun
Li Z, Zheng H, Chen Z, Lin J, Zhu Z, Huang L, Cai X, Duan J, Sun Q, Shu C.   +9 more
europepmc   +1 more source

Efficient Light‐Driven Multi‐Electron Accumulation on Viologens by Molecular Control Over Photochemical Reaction Pathways

Chemistry – A European Journal, EarlyView.
Minimum structural changes, maximum output: By either utilizing a more oxidizing Ru(II) polypyridyl chromophore or by using a more reducing SED, the photocatalytic reduction of methyl viologen (MV2+) proceeds via a reductive quenching pathway. This not only significantly accelerates the overall photoreduction process but also allows accumulation of ...
Fatemeh Sousani, Georgina E. Shillito, Alexander K. Mengele, Martin D. Hager, Ulrich S. Schubert, Stefanie Gräfe, Stephan Kupfer, Sven Rau   +7 more
wiley   +1 more source

Green Light-Driven Hydroxylation of Boronic Acids Employing g-C₃N₄ as the Photocatalyst. [PDF]

Molecules
Troulos AE, Antonaki AM, Zografaki M, Binas V, Gkizis PL.   +4 more
europepmc   +1 more source

Well‐Defined Nickel Precatalysts: Form, Function, and Application

Chemistry – A European Journal, EarlyView.
This review provides guidance on which nickel precatalysts to choose for a given application or which properties to prioritize in reaction development. A summary of the ease of synthesis, stability, diversity, accessibility, modularity, and general applicability is provided along with a related infographic.
Morgan E. John, George A. Koutsantonis, Reto Dorta, Scott G. Stewart   +3 more
wiley   +1 more source

Nitroarene-Mediated Photo-oxidative Deconstruction and Upcycling of Unsaturated Rubber Waste. [PDF]

Macromolecules
Guo M, Wang Z, Obregon R, Fernando O, Wang J.   +4 more
europepmc   +1 more source