Results 111 to 120 of about 3,487 (237)

Synthesis and application of novel heterocyclic dyes based on 11-amino-13H-acenaphtho[1,2-e]pyridazino[3,2-b]quinazolin-13-one [PDF]

open access: yesJournal of the Serbian Chemical Society, 2002
A new fused heterocyclic compound, 11-amino-13H-acenaphtho[1,2-e]pyridazino [3,2-b]quinazolin-13-one was synthesized and used to prepare a novel series of heterocyclic mono azo dyes by coupling with various naphthols.
RANJAN G. PATEL   +2 more
doaj  

Alkoxyallenes in Modern Synthesis: Reactivity, Catalysis, and Complexity Generation

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 17, 1 September 2026.
The last decade has witnessed a remarkable transformation in alkoxyallene chemistry. Although historically employed as synthetic equivalents of acrolein or as versatile 3C synthons, alkoxyallenes are now increasingly recognized as highly adaptable platforms for synthetic design.
A. Lanfranco   +5 more
wiley   +1 more source

Pd-Catalyzed Ring Opening of Oxa- and Azabicyclic Alkenes with Aryl and Vinyl Halides:  Efficient Entry to 2-Substituted 1,2-Dihydro-1-naphthols and 2-Substituted 1-Naphthols

open access: yes, 2016
An efficient syntheses of 2-substituted 1,2-dihydro-1-naphthols and 2-substituted 1-naphthols has been developed that involves the sequential palladium-catalyzed ring opening of oxabicyclic alkenes with aryl and vinyl halides followed by oxidation of ...
Chi-Li Chen (1585348)   +1 more
core   +1 more source

A 3D Human Bone and Bone Marrow‐on‐a‐Chip Model for In Vitro Bone Remodeling and Immune Cell Maintenance

open access: yesAdvanced Science, Volume 13, Issue 51, 14 September 2026.
This study presents a human Bone (and Bone Marrow)‐on‐a‐Chip model based on native human bone scaffolds and autologous cells. Dynamic perfusion and sequential cell seeding replicate the physiological bone remodeling process in vitro, enabling the long‐term culture of functional, mature bone marrow immune subpopulations.
Nina Stelzer   +17 more
wiley   +1 more source

Palladium-Catalyzed Domino Synthesis of 4‑Amino-3-acyl-2- naphthols via Isocyanide Chemoselective Insertion

open access: yes, 2015
A novel and efficient strategy for the synthesis of sterically hindered 4-amino-3-acyl-2-naphthols through a palladium-catalyzed coupling reaction involving isocyanide chemselective insertion and domino isomerization has been developed.
Hua-Qing Duan (1545841)   +5 more
core   +1 more source

Naphthol and lens.

open access: yesIndian journal of medical sciences, 1992
Alpha and beta naphthols, the metabolites of naphthalene, a cataractogenic agent, was tested for it's effect on sheep lens proteases and their inhibitors. It reduced protease activities, not that of inhibitor activities of lens proteins. It also increased the efflux of free amino acid from lenses which was retarded by a high concentration of tissue ...
openaire   +1 more source

Palladium(II)-Catalyzed Oxidative Dearomatization of Free Naphthols with Two Alkyne Units

open access: yes, 2016
Readily available 2-naphthols undergo [2 + 2 + 1] spiroannulation reactions with alkynes in the presence of a PdII catalyst and an oxidant. This process relies on C–H functionalization and naphthyl ring dearomatization at the 1-position of 2-naphthols to
Yaoyu Wang (178722)   +6 more
core   +1 more source

Excited‐State Antiaromaticity Relief‐Guided Discovery of 7‐Hydroxycoumarins as Photoacid Catalysts

open access: yesChemCatChem, Volume 18, Issue 17, 14 September 2026.
DFT and NICS studies are presented, in order to elucidate the relation of photoacidity with antiaromaticity relief of the excited state of 4‐substituted umbelliferone derivatives, leading to the experimentally optimum selection of photoacid catalysts for the acetalization reaction.
E. Alexandros Routsi   +5 more
wiley   +1 more source

C-Glycosylation of naphthols using glucosyl donors

open access: yes, 2001
Attempts to effect direct C-glycosylation of naphthols 6, 7, and 8 using glucosyl donors 9 and 10 were unsuccessful. O-Glycosides 11, 12 and 15 were obtained under Mitsunobu conditions, however, these failed to undergo rearrangement to the C-glycosides ...
Brimble, MA, Brenstrum, Timothy
core  

Organocatalyzed Intermolecular Asymmetric Allylic Dearomatization of Both α- and β‑Naphthols

open access: yes, 2018
The first highly stereoselective intermolecular catalytic asymmetric dearomatization (CADA) of α-naphthols through C–C formation and the first asymmetric allylic dearomatization of naphthols by chiral organocatalysis have been achieved.
Binmiao Yang (6155915)   +5 more
core   +1 more source

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