Results 21 to 30 of about 9,174 (269)

Antioxidant Activities of Hydroxylated Naphthalenes: The Role of Aryloxyl Radicals

open access: yes, 2023
Herein is delineated a first systematic framework for the definition of structure-antioxidant property relationships in the dihydroxynaphthalene (DHN) series.
d'Ischia, Marco   +7 more
core   +1 more source

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

Sequential Carbon–Carbon/Carbon–Selenium Bond Formation Mediated by Iron(III) Chloride and Diorganyl Diselenides: Synthesis and Reactivity of 2‑Organoselenyl-Naphthalenes

open access: yes, 2017
In this paper, we report an intramolecular cyclization of benzylic-substituted propargyl alcohols promoted by iron­(III) chloride and diorganyl diselenides to give 2-organoselenyl-naphthalenes via a sequential carbon–carbon/carbon–selenium bond formation.
Gilson Zeni (1457287)   +2 more
core   +2 more sources

Synthesis of Substituted Naphthalenes via a Catalytic Ring-Expansion Rearrangement

open access: yes, 2016
A new methodology for the preparation of substituted naphthalenes starting from readily available indenones, organometal reagents, and trimethylsilyldiazomethane via a catalytic rearrangement process is described.
Benjamin B. Morris (2411014)   +3 more
core   +3 more sources

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

Distributions of Polychlorinated Naphthalenes in Sediments of the Yangtze River, China

open access: yesMolecules, 2021
The pollution status of polychlorinated naphthalenes (PCNs) in the sediment of the Yangtze River Basin, Asia’s largest river basin, was estimated. The total concentrations of PCNs (mono- to octa-CNs) ranged from 0.103 to 1.631 ng/g.
Zhitong Liu   +5 more
doaj   +1 more source

Towards a Synthesis of Naphthalene Derived Natural Products

open access: yesMolecules, 2005
Dieckmann-type cyclization reactions have been employed in the synthesis of the alkyl substituted naphthoquinone 11 and the naphthalenes 10 and 12.
R. Barrow, M. McCulloch
doaj   +1 more source

Isolation and Ionization of 1,1-Dihalogeno-1H-cyclopropa[a]-naphthalene

open access: yesCHIMIA, 1985
1,1-Difluoro- and 1,1-dichloro-1H-cyclopropa[a]naphthalenes (1a and 1b) are prepared via dehydrohalogenation of the appropriate brominated carbene adducts (2a and 2b, respectively) of 4-bromo-1,2-dihydronaphthalene.
Paul Müller, Huong Can Nguyen Thi
doaj   +1 more source

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