Results 11 to 20 of about 9,174 (269)

Pd-Catalyzed Asymmetric Dearomative Heck/Tsuji-Trost Difunctionalization of Naphthalenes. [PDF]

open access: yesAdv Sci (Weinh)
We have developed a palladium‐catalyzed asymmetric dearomative Heck/Tsuji‐Trost 1,4‐difunctionalization reaction of naphthalenes, affording 4‐aminospirocyclohexene oxindole products bearing two remote chiral centers. Through the effect of the newly designed chiral sulfinamide phosphine ligand with large steric hindrance, side reactions are inhibited ...
Ma LL, Xu B, Zhang J, Zhang ZM.
europepmc   +2 more sources

Synthesis and Characterisation of Eight Isomeric Bis(2-pyridyloxy)naphthalenes [PDF]

open access: yesMolecules, 2006
Eight isomeric bis(2-pyridyloxy)naphthalenes have been prepared from reactions of 2-bromopyridine with the appropriate dihydroxynaphthalene and the products fully characterised by 1- and 2-D NMR spectroscopy.
Peter J. Steel   +1 more
doaj   +4 more sources

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

Substituted Naphthalenes and Their Role as Potato Sprout Suppressants [PDF]

open access: yes, 1991
This thesis describes work relating to the substituted naphthalenes and their use as potato sprout suppressant chemicals. Sprout suppressants are used to control the sprouting of potatoes during extended storage.
O'Hagan, Noreen
core   +6 more sources

Perfluorohalogenated Naphthalenes: Synthesis, Crystal Structure, and Intermolecular Interaction [PDF]

open access: yes, 2023
Perfluorohalogenated naphthalenes (PFXNaPs) are unique small molecules with great potential to exhibit a new type of σ-hole and π-hole bonding, owing to the incorporation of multiple fluorine atoms onto the naphthalene ring.
Satoshi, SUGIURA   +6 more
core   +2 more sources

Spirodienone and Bis(spirodienone) Derivatives of Calix[4]naphthalenes

open access: yes, 2016
Calix[4]naphthalenes 11 and 12 in which hydroxyl groups are situated intraannularly can be oxidized with PTMATB and base to form the bis(spirodienone) 13, from 11, and bis(spirodienone) 20−21 and spirodienone 22, from 12.
Paris E. Georghiou (828618)   +3 more
core   +4 more sources

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