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...

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...

and chromenylium (also called benzopyrylium) is a bicyclic version of pyrylium. The positive charge can move around the molecule. At least 31 monomeric...

4H-pyran easily disproportionates to the corresponding dihydropyran and the pyrylium ion, which is easily hydrolyzed in aqueous medium. Although the pyrans...

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)...

germabenzene, stannabenzene, pyridine, phosphorine, arsabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Borazine Yuan, Yuanyuan;...

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...

stannabenzene, pyridine, phosphorine, arsabenzene, stibabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Borazine Boese, Roland;...

the DPDB ligand Another synthesis route starts from the of pyridinium or pyrylium salts with cyclopentadienyl anion: Azulene can also be synthesized via...

carbon atom, but actually selenium is substituted for the oxygen atom in pyrylium. In the Hantzsch-Widman system of nomenclature, it is called seleninium...

Triphenylcarbenium (C6H5)3C+ Dihydrogen H+2 Phosphonium PH+4 Cyclopropenium C3H+3 Hydronium H3O+ Trifluoromethyl CF+3 Fluoronium H2F+ Pyrylium C5H5O+ Sulfonium H3S+...

stannabenzene, pyridine, phosphorine, arsabenzene, stibabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium 6-membered rings with two...

esters Isocyanates 2 RNCO Phenyl isocyanate Many analogous compounds Oxonium ions 1 & 1 & 1 R3O+ Anthocyanins includes Pyrylium salts Acylium ions 3 RCO+...

borabenzene, silabenzene, germanabenzene, stannabenzene, phosphorine or pyrylium salts the aromaticity is still retained. Aromaticity also occurs in compounds...

germabenzene, stannabenzene, pyridine, phosphorine, arsabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Critics pointed out a problem...

(Azine not used) Pyridinium cation Oxygen Oxane Pyran (Oxine not used) Pyrylium cation Phosphorus Phosphinane Phosphinine Phosphatabenzene cation Selenium...

+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...

6-triphenylphosphabenzene. This is achieved by treating 2,4,6-trisubstituted pyrylium salt with phosphanes. The first derivative of arsabenzene was 9-arsaanthracene...

tautomers depending on pH and hydration, several of these bare the distinctive pyrylium core. Asahina, Yasuhiko; Inubuse, Mototaro (1928). "Über die Reduktion...

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...

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,...

germabenzene, stannabenzene, pyridine, phosphorine, arsabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Nomenclature of Organic...

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...

germabenzene, stannabenzene, pyridine, phosphorine, arsabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Ebrahimi, A. A.; Ghiasi...

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...

(This was measured in the crystal structure of tetraphenyl telluropyrylium-pyrylium monomethine fluoroborate. When the ring of telluropyrylium is fused with...

acid and chromic oxychloride. He found new methods for the synthesis of pyrylium salts (Balaban–Nenitzescu–Praill synthesis), of carbenes, tryptamine, serotonin...

stannabenzene, pyridine, phosphorine, arsabenzene, stibabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Ashe, Arthur J. (December...

南 nán 'south' bǐnán to transliterate '-ran'. Transliteration. 吡喃鎓/吡喃𬭩 pyrylium 比 bǐ 'compare', 南 nán 'south', and 翁 wēng 'old man': bǐnánwēng Combination...

them to oxatriquinane. Triethyloxonium tetrafluoroborate Brookhart's acid Pyrylium salt Mark Mascal; Nema Hafezi; Nabin K. Meher & James C. Fettinger (2008)...