The tropylium ion or cycloheptatrienyl cation is an aromatic species with a formula of [C 7 H 7] +. [4] Its name derives from the molecule tropine from which cycloheptatriene (tropylidene) was first synthesized in 1881.

Oct 14, 2021 · Tropylium | C7H7+ | CID 5224206 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

When 1,3,5-cycloheptatriene is reacted with a reagent that can remove a hydride ion (H:-), the 1,3,5-cycloheptatrienyl cation, which is commonly known as the tropylium cation, is formed with unexpected ease. Despite the presence of an electron deficient carbocation, the tropylium cation, is unusually stable and can be isolated as a salt.

May 15, 2023 · The tropylium ion is a cyclic, planar organic cation with the chemical formula C 7 H 7+. It is formed by the protonation of tropine, which is a bicyclic organic compound found in plants such as Atropa belladonna and Hyoscyamus niger. The tropylium ion has six π-electrons in its conjugated ring system, which gives it aromatic properties.

The tropylium ion is a non-benzenoid aromatic species that works as a catalyst. This chemical entity brings about a large number of organic transformations, such as hydroboration reactions, ring contraction, the trapping of enolates, oxidative ...

Dec 27, 2021 · When 1,3,5-cycloheptatriene is reacted with a reagent that can remove a hydride ion (H: -), the 1,3,5-cycloheptatrienyl cation, which is commonly known as the tropylium cation, is formed with unexpected ease. Despite the presence of an electron deficient carbocation, the tropylium cation, is unusually stable and can be isolated as a salt.

Jun 1, 2023 · The tropylium ion is a non-benzenoid aromatic species that works as a catalyst. This chemical entity brings about a large number of organic transformations, such as hydroboration reactions, ring contraction, the trapping of enolates, oxidative functionalization, metathesis, insertion, acetalization, and trans-acetalization reactions.

May 15, 2023 · The primary purpose of using tropylium ions in organic reactions is to replace transition metals in catalysis chemistry. It outperforms transition-metal catalysts in terms of its...

The cycloheptatrienyl cation, or aromatic tropylium ion, is one of the aromatic structures that exist only because they are electrically charged entities.

Jul 3, 2017 · The tropylium ion is a curious seven-membered aromatic ring (C7H7+) used in organic synthesis and as a ligand for metal complexes. Chemists led by T. Vinh Nguyen of the University of New South Wales Sydney have shown for the first time that tropylium salts can act as organic Lewis acid catalysts (Green Chem. 2017, DOI: 10.1039/c7gc01519d).