Results 51 to 60 of about 14,631 (192)
Alcohol‐Directed Carboamination of Conjugated Enynes
Angewandte Chemie, Volume 138, Issue 24, 8 June 2026.The first general three‐component intermolecular Pd‐catalyzed carboamination of conjugated enynes enables the coupling of anilines and aryl triflates to produce functionalized allenic amines, utilizing a native alcohol directing group to control regioselectivity.
Helena Solé‐Àvila +3 more
wiley +2 more sources
Chemistry of Pyrones, Part 3: New Podands of 4H-Pyran-4-ones
Molecules, 2000 New derivatives of 3,5-disubstituted 4H-Pyran-4-one podands (9-15) were prepared by transesterification reaction of dimethyl or diethyl 2,6-dimethyl-4H-pyran-4-one-3,5-dicarboxylate with some glycol, glycol ethers or by nucleophilic substitution of some ...
Aziz Shahrisa, Alireza Banaei
doaj +1 more source
Energy Transfer in Nanodroplet‐Based Luminescent Solar Concentrators
Small, EarlyView.We present novel luminescent solar concentrators (LSCs) featuring polymer composites with fluorescent dye‐doped oil nanodroplets. This liquid environment ensures high dye solubility and preserves fluorescence quantum yields, even at high local dye concentrations.
Lorenzo Vallan +7 more
wiley +1 more source
Molecules, 2001 New podand and crown ether derivatives of 3,5-disubstituted 4H-pyran-4-one (8-11) were prepared by the nucleophilic substitution reaction of 3,5-bis(bromomethyl)-2,6-diphenyl-4H-pyran-4-one with o-nitrophenol, 8-hydroxyquinoline, 2-hydroxymethyl pyridine
Alireza Banaei, Aziz Shahrisa
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Zeitschrift für anorganische und allgemeine Chemie, EarlyView.One‐dimensional coordination polymers of Cu(II) and Co(II) with kojic acid show distinct chain connectivities revealed by X ray crystallography and exhibit extremely weak magnetic interactions, as supported by magnetic measurements and molecular orbital calculations. The crystal structures and magnetic properties of coordination complexes [Cu(C6H5O4)2]
Wataru Fujita, Tomoko Yamaguchi
wiley +1 more source
Green Chemistry Letters and Reviews, 2018 In the present work, a new magnetically recyclable nanocomposite catalyst was designed, prepared, and characterized by Fourier transform infrared (FT-IR) spectroscopy, field-emission scanning electron microscopy (FE-SEM) images, X-ray diffraction (XRD ...
Ali Maleki, Mojtaba Azizi, Zeynab Emdadi
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9-(2,4-Dinitrophenyl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione
Acta Crystallographica Section E, 2013 In the title compound, C23H24N2O7, the central 4H-pyran ring adopts a flattened boat conformation, whereas both cyclohexenone rings adopt envelope conformations, the C atom bearing the dimethyl substituent being the flap atom in each case.
N. Sureshbabu, V. Sughanya
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Resilience of floral scent emission after florivory
Plant Biology, EarlyView.Florivory is thought to affect floral traits, impacting pollination. However, our data suggest a stability in post‐florivory scent emission, which may guarantee the maintenance of pollinator visitation regardless of florivory, indicating a resilience of natural systems with multiple and simultaneous interactions. Created in BioRender. Tunes, P.
P. Tunes +4 more
wiley +1 more source
5-Acetyl-2-amino-4-(2-fluorophenyl)-6-methyl-4H-pyran-3-carbonitrile dichlomethane hemisolvate
IUCrDataThe title compound, 2C15H13FN2O2·CH2Cl2, crystallizes with two main molecules in the asymmetric unit with a disordered dichloromethane solvent molecule.
Carren Nyapola +3 more
doaj +1 more source
Rapid Communications in Mass Spectrometry, Volume 40, Issue 16, 30 August 2026.ABSTRACT Rationale Cannabinoids comprise a chemically diverse group of meroterpenoids whose extensive isomerism, variable side‐chain length, and frequent oxidative or rearranged derivatives lead to strongly overlapping yet characteristic MS/MS fragmentation patterns. In untargeted LC–MS/MS datasets, this combination of structural diversity and spectral
Julia Maia Galvão de Queiroz +4 more
wiley +1 more source