Results 51 to 60 of about 1,772 (162)

Magnetic Layered Double Hydroxide Nanocomposites: Synthesis, Catalytic Performances, Environmental and Biological Applications

ENERGY &ENVIRONMENTAL MATERIALS, Volume 8, Issue 5, September 2025.
This review involves a comprehensive study on the diverse applications of the magnetic layered double hydroxides (LDHs) including their catalytic performances, as well as, environmental and biological functions. Moreover, different strategies utilized for the synthesis of LDH‐based composites are described.
Mohammad Mavvaji, Ahmed M. Senan, Senem Akkoc   +2 more
wiley   +1 more source

Sulfur‐Mediated Ring‐Opening Cyclization of Spirocyclopropanes for the Construction of Benzo[b]thiophene Skeleton

Chemistry – An Asian Journal, Volume 20, Issue 16, August 14, 2025.
Regioselective ring‐opening cyclization of spirocyclopropanes with NaSH proceeded smoothly, and subsequent addition of an acid afforded tetrahydrobenzo[b]thiophen‐4‐ones that could be converted into the 4‐hydroxybenzo[b]thiophenes. This protocol provides an alternative synthetic method to access benzo[b]thiophenes without using multisubstituted ...
Hisanori Nambu, Yuki Seto, Yuta Onuki, Koga Yamazaki, Keisuke Tomohara, Takayuki Yakura   +5 more
wiley   +1 more source

An efficient synthesis of imidazo[2,1-b][1,3]thiazins via a one-pot, three-component and solvent-free reaction

Green Chemistry Letters and Reviews, 2016
A simple and eco-friendly method for the synthesis of novel imidazo[2,1-b][1,3]thiazin derivatives has been developed via the one-pot, three-component and solvent-free reaction of thiohydantoins, aromatic aldehyde and 5,5-dimethylcyclohexane-1,3-dione in
Mohammad Mehdi Ghanbari
doaj   +1 more source

Crystal structure, Hirshfeld surface and frontier molecular orbital analysis of 10-benzyl-9-(3-ethoxy-4-hydroxyphenyl)-3,3,6,6-tetramethyl-3,4,6,7,9,10-hexahydroacridine-1,8(2H,5H)-dione

Acta Crystallographica Section E: Crystallographic Communications, 2020
In the fused ring system of the title compound, C32H37NO4, the central dihydropyridine ring adopts a flattened boat conformation, the mean and maximum deviations of the dihydropyridine ring being 0.1429 (2) and 0.2621 (2) Å, respectively.
N. Suresh Babu, V. Sughanya, A. Dhandapani, R. Kalaivanan   +3 more
doaj   +1 more source

Applications of Dimedone in the Synthesis of Heterocycles: An Update [PDF]

Current Organic Chemistry, 2016
Dimedone (5,5-dimethylcyclohexane-1,3-dione) is an alicyclic diketone, occasionally considered as building blocks in design and synthesis of a wide variety of heterocycles. The synthetic efficacy of dimedone as a synthon has been presented as a chapter in Advances in Heterocyclic Chemistry in 2009.
Mommahed Heravi, Majid, Zadsirjan, Vahideh, Fattahi, Bahareh, Nazari, Niousha   +3 more
openaire   +1 more source

Advances in Ligand‐Driven Pd‐Catalyzed C─H Functionalizations: Recent Insights and Updates

ChemCatChem, Volume 17, Issue 15, August 7, 2025.
The most significant advances in ligand‐driven Pd‐catalyzed organic synthesis over the past two years are presented. Processes involving C─H activation of substrates, avoiding their prefunctionalization are illustrated. Both the activity and selectivity of the catalyst depend on the design of the ligands (pyridones, pyridines, amino acids, phosphines ...
Jesús Moradell, Cosmina Bohan, Alexandra Pop, Esteban P. Urriolabeitia   +3 more
wiley   +1 more source

Reactivity of δ‐Functionalized Para‐Quinone Methides in Nucleophilic Addition Reactions

Chemistry – A European Journal, Volume 31, Issue 40, July 17, 2025.
The reactivities of δ‐functionalized para‐quinone methides (pQMs) were characterized by kinetic studies of their reactions with carbanions in DMSO. Evaluating the second‐order rate constants (k2) by the Mayr‐Patz equation gave the electrophilicities E of pQMs.
Christoph Gross, Andreas Eitzinger, Peter Mayer, Armin R. Ofial   +3 more
wiley   +1 more source

Synthetic Study on Bicyclic Pyranonaphthoquinone Natural Products: Construction of the Dioxabicyclo[3.3.1]nonene Motif

ChemistryEurope, Volume 3, Issue 4, July 14, 2025.
The method for the stereoselective formation of dioxabicyclo[3.3.1]nonene structure has been developed. The intriguing bicyclic skeleton is embedded in hybrid‐type pyranonaphthoquinone natural products, e.g., glenthamine Treatment of nanaomycin D and naphthol with Na2HPO4 in DMSO and water affords the bicyclic compound in good yield.
Yoshio Ando, Sota Ajima, Ken Ohmori
wiley   +1 more source

9-(4-Hydroxybutyl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione

Molbank, 2016
The title compound 9-(4-hydroxybutyl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione was synthesized in 72% yield through a simple, convenient and environmentally friendly one-pot reaction between dimedone and 3,4-dihydro-2H-pyran in
Camilo A. Navarro, Cesar Sierra, Cristian Ochoa-Puentes   +2 more
doaj   +1 more source

9-(4-Formylphenyl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione

IUCrData, 2018
In the title compound, C24H26O4, the central 4H-pyran ring adopts a flattened boat conformation, with the mean and maximum deviations of the ring being 0.0582 (6) and 0.1012 (3) Å, respectively.
R. Kalaivanan, V. Sughanya, N. Sureshbabu   +2 more
doaj   +1 more source