Results 211 to 220 of about 49,559 (307)

When Light Challenges Heat: Mechanistic Insights Into a Reaction Competing With Cadogan Cyclisation in Nitro‐Perylenediimides

open access: yesChemistry – A European Journal, Volume 32, Issue 24, 23 June 2026.
Visible‐light irradiation of nitro‐perylenediimide in the presence of triphenylphosphine reveals an unexpected pathway competing with the classical Cadogan cyclization. Mechanistic investigations uncover the rapid and selective formation of bay‐functionalized 1‐iminophosphorane‐12‐hydroxy perylenediimide derivatives.
Manuel Pedrón Laserna   +2 more
wiley   +1 more source

Photolytic oxidation of ammonium chloride as a source of Cl<sub>2</sub> in the atmosphere. [PDF]

open access: yesNat Commun
Li S   +14 more
europepmc   +1 more source

1,1‐Disubstituted Vinylbromides: Versatile Building Blocks for the Synthesis of Nitrogen‐Containing Heterocycles

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 23, 16 June 2026.
1,1‐Disubstituted vinylbromides are key intermediates for constructing nitrogen‐containing heterocycles. This review provides an overview of the synthetic applications of 1,1‐disubstituted vinylbromides and summarizes recent developments in reaction methodologies, mechanistic insights, and the structural diversity of N‐heterocyclic compounds accessible
Anne Westermeyer   +6 more
wiley   +1 more source

Methane Emission Reductions Slow Stratospheric Ozone Recovery by Amplifying the Potency of Ozone Depleting Substances

open access: yesGeophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Reducing methane emissions is important for restricting surface temperature increases. However, methane also influences stratospheric ozone, and its recovery, via chemical and radiative processes. Using the United Kingdom Earth System Model's state‐of‐the‐art methane emission‐driven capability, we examine the impact of methane emission ...
James Weber   +7 more
wiley   +1 more source

The Impact of Nocturnal Boundary Layer Height on Daytime Surface Particulate Nitrate Increases by Vertical Transport From the Residual Layer

open access: yesGeophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Particulate nitrate (pNO3−) has become a critical air‐quality issue, with pronounced morning increases in surface concentrations attributed to downward transport from upper layer. However, how the nocturnal boundary layer evolution modulates this process remains unclear.
Yujie Qin   +7 more
wiley   +1 more source

Mechanism of the Photodecomposition of Stable Triarylmethyl Radicals. [PDF]

open access: yesAngew Chem Int Ed Engl
Hackney HE   +3 more
europepmc   +1 more source

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