Pyrylium is a cation (positive ion) with formula C5H5O+, consisting of a six-membered ring of five carbon atoms, each with one hydrogen atom, and one positively...
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Pyrylium-1 (Py-1) is a fluorogenic salt of a pyrylium derivative and tetrafluoroborate. It is an amine-labeling dye that is not fluorescent itself, but...
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and chromenylium (also called benzopyrylium) is a bicyclic version of pyrylium. The positive charge can move around the molecule. At least 31 monomeric...
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synthesized by Gottfried Märkl in 1966 by condensation of the corresponding pyrylium salt and phosphine or its equivalent ( P(CH2OH)3 and P(SiMe3)3). The (unsubstituted)...
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analogous to the pyrylium cation with the oxygen atom replaced by a sulfur atom. Thiopyrylium salts are less reactive than the analogous pyrylium salts due to...
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4H-pyran easily disproportionates to the corresponding dihydropyran and the pyrylium ion, which is easily hydrolyzed in aqueous medium. Although the pyrans...
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carbon atom, but actually selenium is substituted for the oxygen atom in pyrylium. In the Hantzsch-Widman system of nomenclature, it is called seleninium...
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germabenzene, stannabenzene, pyridine, phosphorine, arsabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Borazine Yuan, Yuanyuan;...
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the DPDB ligand Another synthesis route starts from the of pyridinium or pyrylium salts with cyclopentadienyl anion: Azulene can also be synthesized via...
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Triphenylcarbenium (C6H5)3C+ Dihydrogen H+2 Phosphonium PH+4 Cyclopropenium C3H+3 Hydronium H3O+ Trifluoromethyl CF+3 Fluoronium H2F+ Pyrylium C5H5O+ Sulfonium H3S+...
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stannabenzene, pyridine, phosphorine, arsabenzene, stibabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Borazine Boese, Roland;...
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germabenzene, stannabenzene, pyridine, phosphorine, arsabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Critics pointed out a problem...
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borabenzene, silabenzene, germanabenzene, stannabenzene, phosphorine or pyrylium salts the aromaticity is still retained. Aromaticity also occurs in compounds...
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(Azine not used) Pyridinium cation Oxygen Oxane Pyran (2H-Oxine not used) Pyrylium cation Phosphorus Phosphinane Phosphinine Selenium Selenane Selenopyran...
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stannabenzene, pyridine, phosphorine, arsabenzene, stibabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium 6-membered rings with two...
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cations where oxygen is a member of a ring, RO+R (the ring may be aromatic) pyrylium, C5H5O+ tertiary sulfonium cations having one triple-bonded substitution...
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nitrite Nitrate esters 1 RONO2 Isopropyl nitrate Carbamate esters 1 & 2 ROCONR2 Carbaryl Furans 1.5 R4C4O Furfural Pyrylium salts 1.5 R5C5O+ X− Anthocyanins...
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+1 cation derived by protonation of a hydride (includes oxonium ions) Pyrylium, a subtype of oxonium ion Sulfonium, a sulfur analog that can be chiral...
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germabenzene, stannabenzene, pyridine, phosphorine, arsabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Ebrahimi, A. A.; Ghiasi...
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tautomers depending on pH and hydration, several of these bare the distinctive pyrylium core. Asahina, Yasuhiko; Inubuse, Mototaro (1928). "Über die Reduktion...
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6-triphenylphosphabenzene. This is achieved by treating 2,4,6-trisubstituted pyrylium salt with phosphanes. The first derivative of arsabenzene was 9-arsaanthracene...
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Sammes, P. G.; Street, L. J. Intra molecular Cyclo additions with Oxido pyrylium Ylides J. Chem. Soc., Chem. Commun. 1982, 1056. Garst, M. E.; McBride,...
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germabenzene, stannabenzene, pyridine, phosphorine, arsabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Nomenclature of Organic...
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investigating the synthesis and properties of pyrylium salts. He discovered with co-workers a new way of synthesis of pyrylium salts by diacylation of alkenes. This...
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them to oxatriquinane. Triethyloxonium tetrafluoroborate Brookhart's acid Pyrylium salt Mark Mascal; Nema Hafezi; Nabin K. Meher & James C. Fettinger (2008)...
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hydroxyl-terminated atomic defects that participate in a Grotthuss-type relay, while pyrylium-like ether terminations did not. Recently, Paul and co-workers at IISER...
136 KB (15,287 words) - 04:41, 31 July 2024
stannabenzene, pyridine, phosphorine, arsabenzene, stibabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Ashe, Arthur J. (December...
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acid and chromic oxychloride. He found new methods for the synthesis of pyrylium salts (Balaban–Nenitzescu–Praill synthesis), of carbenes, tryptamine, serotonin...
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germabenzene, stannabenzene, pyridine, phosphorine, arsabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Ebrahimi, Arash Afshar;...
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(This was measured in the crystal structure of tetraphenyl telluropyrylium-pyrylium monomethine fluoroborate. When the ring of telluropyrylium is fused with...
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