Relevant bibliographies by topics / Fluorenide salts

Academic literature on the topic 'Fluorenide salts'

Author: Grafiati
Published: 26 July 2024
Last updated: 26 July 2024

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Journal articles on the topic "Fluorenide salts"

1

Evans, Kieren J., and Stephen M. Mansell. "Synergic Deprotonation Generates Alkali‐Metal Salts of Tethered Fluorenide‐NHC Ligands Co‐Complexed to Alkali‐Metal Amides." Chemistry – A European Journal 25, no. 15 (February 19, 2019): 3766–69. http://dx.doi.org/10.1002/chem.201806278.

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2

Bader, Korinna, Carsten Müller, Yann Molard, Angelika Baro, Philipp Ehni, Jakob Knelles, and Sabine Laschat. "Fluorenone imidazolium salts as novel de Vries materials." RSC Advances 10, no. 40 (2020): 23999–4016. http://dx.doi.org/10.1039/d0ra04650g.

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3

Phipps, Robert, Paul Türtscher, and Holly Davis. "Palladium-Catalysed Cross-Coupling of Benzylammonium Salts with Boronic Acids under Mild Conditions." Synthesis 50, no. 04 (August 23, 2017): 793–802. http://dx.doi.org/10.1055/s-0036-1588548.

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Herein, we give a full account of the development of the palladium­-catalysed cross-coupling of benzylammonium salts with boronic acids. A range of benzylamine-derived quaternary ammonium salts can be coupled with boronic acids under relatively mild conditions. Our optimization has identified ligands that can be used to chemoselectively cross-couple at the ammonium in the presence of chlorides. We demonstrate that intramolecular palladium-catalysed C–H activation is also a viable pathway for the putative benzyl-Pd(II) intermediate obtained upon oxidative addition and have optimised this to obtain fluorene in good yield.
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4

Frey, Okko N., Timo Stalling, Florian Schlüter, Wolfgang Saak, Marc Schmidtmann, Detlev Haase, and Rüdiger Beckhaus. "Remarkable stability of tetrabenzo[a,c,g,i]fluorenyl ammonium salts in water: syntheses, reactions, and crystal structures." Dalton Transactions 45, no. 3 (2016): 1085–92. http://dx.doi.org/10.1039/c5dt04137f.

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Deprotonation of 8bH-tetrabenzo[a,c,g,i]fluorene (8bH-Tbf), a large benzannulated cyclopentadienyl derivative, by [NR3R′][OH] (R = nBu, Et; R′ = nBu, Et, Bn) leads to a series of Tbf ammonium salts of the type [NR3R′][Tbf].
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5

Żesławska, Ewa, Ewa Szymańska, Wojciech Nitek, and Jadwiga Handzlik. "Crystallographic studies of piperazine derivatives of 3-methyl-5-spirofluorenehydantoin in search of structural features of P-gp inhibitors." Acta Crystallographica Section C Structural Chemistry 77, no. 8 (July 8, 2021): 467–78. http://dx.doi.org/10.1107/s2053229621006756.

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5-Spirofluorenehydantoin derivatives show efflux modulating, cytotoxic and antiproliferative effects in sensitive and resistant mouse T-lymphoma cells. In order to extend the knowledge available about the pharmacophoric features responsible for the glycoprotein P (P-gp) inhibitory properties of arylpiperazine derivatives of 3-methyl-5-spirofluorenehydantoin, we have performed crystal structure analyses for 1-[3-(3′-methyl-2′,4′-dioxospiro[fluorene-9,5′-imidazolidin]-1′-yl)propyl]-4-phenylpiperazine-1,4-diium dichloride monohydrate, C29H32N4O2 2+·2Cl−·H2O (1), 3′-methyl-1′-{3-[4-(4-nitrophenyl)piperazin-1-yl]propyl}spiro[fluorene-9,5′-imidazolidine]-2′,4′-dione, C29H29N5O4·H2O (2), 3′-methyl-1′-{5-[4-(4-nitrophenyl)piperazin-1-yl]pentyl}spiro[fluorene-9,5′-imidazolidine]-2′,4′-dione, C31H33N5O4 (3), and 1-benzyl-4-[5-(3′-methyl-2′,4′-dioxospiro[fluorene-9,5′-imidazolidin]-1′-yl)pentyl]piperazine-1,4-diium dichloride 0.613-hydrate, C32H38N4O2 2+·2Cl−·0.613H2O (4). Structure 3 is anhydrous but the other three structures crystallize with water present. The investigated compounds crystallize in the monoclinic crystal system, with the space group P21/n for 1 and 3, and P21/c for 2 and 4. The cations of salts 1 and 4 are doubly protonated, with the protons located on the N atoms of the piperazine rings. The packing of 1 and 4 in the crystals is dominated by intermolecular N—H...Cl and O—H...Cl hydrogen bonds. In the crystal structure of 2, the intermolecular interactions are dominated by O—H...O and O—H...N hydrogen bonds, while in 3, which is lacking in classic hydrogen-bond donors, it is C—H...O contacts that dominate. Additionally, we have performed induced-fit docking studies for the investigated compounds docked to the P-gp human homology model.
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6

Abonia, Rodrigo, Luisa F. Gutiérrez, Braulio Insuasty, Jairo Quiroga, Kenneth K. Laali, Chunqing Zhao, Gabriela L. Borosky, Samantha M. Horwitz, and Scott D. Bunge. "Catalyst-free assembly of giant tris(heteroaryl)methanes: synthesis of novel pharmacophoric triads and model sterically crowded tris(heteroaryl/aryl)methyl cation salts." Beilstein Journal of Organic Chemistry 15 (March 12, 2019): 642–54. http://dx.doi.org/10.3762/bjoc.15.60.

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A series of giant tris(heteroaryl)methanes are easily assembled by one-pot three-component synthesis by simple reflux in ethanol without catalyst or additives. Diversely substituted indoles (Ar1) react with quinoline aldehydes, quinolone aldehydes, chromone aldehydes, and fluorene aldehydes (Ar2CHO) and coumarins (Ar3) in 1:1:1 ratio to form the corresponding tris(heteroaryl)methanes (Ar1Ar2Ar3)CH along with (Ar1Ar1Ar2)CH triads. A series of new 2:1 triads were also synthesized by coupling substituted indoles with Ar2CHO. The coupling reactions could also be carried out in water (at circa 80 °C) but with chemoselectivity favoring (Ar1Ar1Ar2)CH over (Ar1Ar2Ar3)CH. The molecular structure of a representative (Ar1Ar2Ar3)CH triad was confirmed by X-ray analysis. Model tris(heteroaryl/aryl)methylium salts were generated by reaction with DDQ/HPF6 and studied by NMR and by DFT and GIAO-DFT.
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7

Tsujimoto, Keijiro, Reiko Ogasawara, Yosuke Kishi, and Hideki Fujiwara. "TTF–fluorene dyads and their M(CN)2−(M = Ag, Au) salts designed for photoresponsive conducting materials." New J. Chem. 38, no. 1 (2014): 406–18. http://dx.doi.org/10.1039/c3nj00979c.

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8

Reinheimer, Eric W., J. R. Galán-Mascarós, and Kim R. Dunbar. "Synthesis and structure of charge transfer salts of tetrathiafulvalene (TTF) and tetramethyl-TTF with 2,4,7-trinitro and 2,4,5,7-tetranitro-9-fluorenone." Synthetic Metals 159, no. 1-2 (January 2009): 45–51. http://dx.doi.org/10.1016/j.synthmet.2008.07.017.

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9

FARHAN, A. N., L. SKULSKI, and A. KRYSKA. "ChemInform Abstract: 2- and 2,7-Substituted Iodonium/Diiodonium Salts Derived from Xanthene, Xanth-9-one, Fluorene, and Fluoren-9-one." ChemInform 28, no. 50 (August 2, 2010): no. http://dx.doi.org/10.1002/chin.199750144.

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10

Tongpim, Saowanit, and Michael A. Pickard. "Growth ofRhodococcusS1 on anthracene." Canadian Journal of Microbiology 42, no. 3 (March 1, 1996): 289–94. http://dx.doi.org/10.1139/m96-042.

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Three slow-growing bacteria were isolated from a mixed culture enriched for growth on anthracene, using creosote-contaminated soil as the inoculum. Organisms were shown to use anthracene by the production of a clear zone around the colony after a mineral salts agar plate was sprayed with anthracene. All three bacteria were nonmotile, nonsporulating, gram-positive rods and stained acid-fast. Physiological and biochemical tests, GC content, and cell wall lipid patterns of whole cell methanolysates indicated that they belonged to the Nocardia–Mycobacterium–Rhodococcus group. On the basis of these characteristics and pyrolysis gas chromatography, they were assigned to the genus Rhodococcus. Growth of the isolates was slow on crystalline anthracene, giving a doubling time of 1.5–3 days, and they grew mainly on the crystal surface. When anthracene was supplied by precipitation from a solvent, doubling time was reduced to 1 day. All three isolates mineralized anthracene but not phenanthrene or naphthalene, nor could they grow on naphthalene, phenanthrene, fluorene, fluoranthene, acenaphthene, pyrene, chrysene, or naphthacene as sole carbon source. One isolate, Rhodococcus S1, was able to use 2-methylanthracene or 2-chloroanthracene as carbon source but not 1- or 9-substituted analogs. These results suggest that the initial enzyme attacking anthracene in these isolates has a narrow substrate specificity.Key words: Rhodococcus, anthracene, polycyclic aromatic hydrocarbon, PAH.
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