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...

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...

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...

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

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...

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)...

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 Dewar included this isomer...

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

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

Phosphonium PH+4 Cyclopropenium C3H+3 Hydronium H3O+ Trifluoromethyl CF+3 Fluoronium H2F+ Triphenylguanidinium [(C6H5)NH]3C+ Pyrylium C5H5O+ Sulfonium H3S+...

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

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

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

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

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

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

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

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

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...

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

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...

germabenzene, stannabenzene, pyridine, phosphorine, arsabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium Ebrahimi, Arash Afshar;...

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

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,...

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...

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

A, Samanta.; and Ajayaghosh, Ayyappanpillai (2020). “A New Pentacyclic Pyrylium Fluorescent Probe that Responds to pH Imbalance During Apoptosis”. Chem...