Results 11 to 20 of about 6,069 (245)

Chemical structure drives developmental toxicity of alkyl-substituted naphthalenes in zebrafish [PDF]

open access: yesEnvironment International
Naphthalene and its alkyl-substituted derivatives are among the most abundant polycyclic aromatic hydrocarbons (PAHs) in environmental and human exposure studies, yet their developmental toxicity and mode of action remain poorly understood due to ...
Mackenzie L. Morshead   +5 more
doaj   +2 more sources

Enantioselective aza-electrophilic dearomatization of naphthalene derivatives [PDF]

open access: yesNature Communications
The catalytic asymmetric dearomatization of naphthalenes is a pivotal strategy for generating enantioenriched three-dimensional aliphatic polycycles from flat aromatic precursors.
Jun Liu   +5 more
doaj   +2 more sources

Photoinduced polarity-mismatched transformations of isoquinolines into naphthalenes [PDF]

open access: yesNature Communications
Isosteric replacement is an important strategy for lead optimization in drug-development paradigms. However, it is usually restricted to cost- and labor-intensive de novo syntheses.
Congcong Zhang   +6 more
doaj   +2 more sources

Biomimetic Mn(III) porphyrin-catalyzed aromaticity-breaking epoxidation of electron-deficient naphthalene [PDF]

open access: yesNature Communications
Selective catalytic aromaticity-breaking epoxidation of arenes remains an ongoing research challenge, attributed to the stability of aromatic systems, the occurrence of over-oxidation, and the instability of epoxides.
Hongli Wu   +7 more
doaj   +2 more sources

Unveiling the Photodegradation Mechanism of Monochlorinated Naphthalenes under UV-C Irradiation: Affecting Factors Analysis, the Roles of Hydroxyl Radicals, and DFT Calculation [PDF]

open access: yesMolecules
Polychlorinated naphthalenes (PCNs) are a new type of persistent organic pollutant (POP) characterized by persistence, bioaccumulation, dioxin-like toxicity, and long-range atmospheric transport. Focusing on one type of PCN, monochlorinated naphthalenes (
Yingtan Yu   +6 more
doaj   +2 more sources

Global emissions of polychlorinated naphthalenes from 1912 to 2050 [PDF]

open access: yesNature Communications
Polychlorinated naphthalenes (PCNs) are persistent organic compounds that are regulated by the Stockholm Convention. Here, we estimate historical emissions from PCN production and use (1912-1987) and unintentional emissions from 20 categories (2000-2020).
Yuyan Luo   +3 more
doaj   +2 more sources

Mono- and Dinitro-BN-Naphthalenes: Formation and Characterization

open access: yesMolecules, 2021
Mono- and dinitro-BN-naphthalenes, i.e., 1-nitro-, 3-nitro-, 1,6-dinitro-, 3,6-dinitro-, and 1,8-dinitro-BNN, were generated in the nitration of 9,10-BN-naphthalene (BNN), a boron–nitrogen (BN) bond-embedded naphthalene, with AcONO2 and NO2BF4 in ...
Mao-Xi Zhang   +6 more
doaj   +1 more source

Source rock geochemistry of central and northwestern Niger Delta: Inference from aromatic hydrocarbons content

open access: yesEnergy Geoscience, 2023
The influence of origin, depositional environment and thermal maturity of organic matter on the occurrence of aromatic hydrocarbons in source rocks from the central and northwestern Niger Delta was investigated.
Akinsehinwa Akinlua   +3 more
doaj   +1 more source

Contamination and sources of polychlorinated naphthalenes in the surface sediments of Chaobai River, China

open access: yesEcotoxicology and Environmental Safety, 2022
In aquatic systems, sediment is both a sink for persistent organic pollutants (POPs) and a potential source of POPs release. Consequently, it is important to understand the pollution characteristics and sources of polychlorinated naphthalenes (PCNs) as ...
Yanjun Du   +4 more
doaj   +1 more source

Electrode material promoted dehydrogenative homo-/cross-coupling of weakly activated naphthalenes

open access: yesGreen Synthesis and Catalysis, 2023
Herein, we reported an electrochemical dehydrogenative homo-/cross-coupling of weakly activated naphthalene in the exogenous transition metal- and oxidants-free manner.
Siyuan Liu   +7 more
doaj   +1 more source

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