Results 61 to 70 of about 20,183 (213)

Advances in Unconventional and Sustainable Synthetic Approaches to Benzopyran Scaffolds

The Chemical Record, EarlyView.
This review provides a comprehensive and critical analysis of low‐impact synthetic methodologies reported in the last 8 years (2018–2026) for the construction of benzopyran‐derived scaffolds, such as coumarins, flavones, chromones, chromenes, and chromanes. The benzopyran scaffold is a versatile family of heterocycles found in a wide range of bioactive
Nathalia B. Sá, Patrick C. Nobre, Isabelly O. Ferreira, Juliano B. Azeredo, Vanessa Nascimento   +4 more
wiley   +1 more source

HY zeolite catalyzes the ortho–methylation of 1–naphthol

Applied Surface Science Advances
The selective ortho–alkylation of 1–naphthol with methanol is carried out over various commercially available acid solid catalysts under relatively mild reaction conditions (
Matea Bačić, Maria Tejeda–Serrano, Yongkun Zheng, Judit Oliver–Meseguer, Antonio Leyva–Pérez   +4 more
doaj   +1 more source

Oxaziridines: Versatile Reagents in Modern Organic Synthesis

The Chemical Record, EarlyView.
Being capable of transferring an O atom and N‐group/atom, oxaziridines are considered multitasking agents. These are employed for diverse organic transformations, such as epoxidation of olefins, α‐ and γ‐hydroxylation/amination of carbonyl compounds, oxidation of sulfides, [3+2]cycloaddition with unsaturated systems.
Ajeet Chandra, Subba Rao Cheekatla, Keshaba Nanda Parida   +2 more
wiley   +1 more source

Development of an imidazole salt catalytic system for the preparation of bis(indolyl)methanes and bis(naphthyl)methane.

PLoS ONE, 2019
Imidazolium salts are shown to catalyze the rapid room temperature reaction of indoles or naphthol with aldehydes to provide bis(indolyl)methanes or bis(naphthol)methane in excellent yields and the reaction proceeds optimally in dichloromethane with no ...
Xu Wang, Courtney C Aldrich
doaj   +1 more source

Pilot-scale steam explosion pretreatment with 2-naphthol to overcome high softwood recalcitrance

Biotechnology for Biofuels, 2017
Background Steam explosion pretreatment has been examined in many studies for enhancing the enzymatic digestibility of lignocellulosic biomass and is currently the most common pretreatment method in commercial biorefineries.
Thomas Pielhop, Janick Amgarten, Michael H. Studer, Philipp Rudolf von Rohr   +3 more
doaj   +1 more source

Assessment of Content and Release of Nickel, Cobalt and Lead in Metallic and Rhinestone Nail Charms in the United States

Contact Dermatitis, EarlyView.
Nail charms are increasingly popular additions to traditional nail treatments. Nickel release was detected in 38.5% of nail charm products by DMG spot test and 67.5% of products by XRF. Nail charms may represent an underrecognized source of consumer exposure in the United States.
Emily Ames, Tarah Schaffer, Brianna C. Peacock, David Cotter, Dathan Hamann, Carsten R. Hamann   +5 more
wiley   +1 more source

Efficient Cleavage of pUC19 DNA by Tetraaminonaphthols

ChemistryOpen
In an attempt to create models of phosphodiesterases, we previously investigated bis(guanidinium) naphthols. Such metal‐free anion receptors cleaved aryl phosphates and also plasmid DNA.
Catharina Kost, Ute Scheffer, Elisabeth Kalden, Michael Wilhelm Göbel   +3 more
doaj   +1 more source

One-Pot Synthesis of 2′-Aminobenzothiazolo-Arylmethyl-2-Naphthols Catalyzed by NBS under Solvent-Free Conditions

The Scientific World Journal, 2013
To develop a new facile protocol for the synthesis of 2′-aminobenzothiazolo-arylmethyl-2-naphthol derivatives, N-bromosuccinimide (NBS) was used as an efficient catalyst for the one-pot synthesis of 2′-aminobenzothiazolo-arylmethyl-2-naphthols in ...
Wei Lin Li, Li Li Wang, Qiu Yan Luo
doaj   +1 more source

Rearrangements of Cycloalkenyl Aryl Ethers

Molecules, 2016
Rearrangement reactions of cycloalkenyl phenol and naphthyl ethers and the acid-catalyzed cyclization of the resulting product were investigated. Claisen rearrangement afforded 2-substituted phenol and naphthol derivatives.
Mercedesz Törincsi, Melinda Nagy, Tamás Bihari, András Stirling, Pál Kolonits, Lajos Novak   +5 more
doaj   +1 more source

Isolation and Identification of Erysipelothrix sp. in Hybrid Grouper (Epinephelus fuscoguttatus × E. lanceolatus) in Taiwan

Journal of Fish Diseases, EarlyView.
ABSTRACT In February 2025, a mortality event of unknown aetiology occurred at a hybrid grouper (Epinephelus fuscoguttatus × Epinephelus lanceolatus) aquaculture farm in southern Taiwan, with sporadic daily deaths persisting for a month. Four moribund groupers were collected over three sampling intervals for diagnostic investigation.
Shang‐Ting Wu, Yu‐Siang Lin, Chia‐Yu Hsieh   +2 more
wiley   +1 more source