Work

Emerging applications of the tropylium ion as reagent, catalyst, and chromophore

Year: 2026

Type: article

Abstract: The cycloheptatrienyl (tropylium) ion is a planar, fully conjugated seven‐membered carbocycle containing six π‐electrons. It features a delocalized positive charge, making it a one‐carbon homolog of benzene. Owing to its unique electronic structure and facile accessibility, the tropylium ion has recently attracted increasing attention as a versatile reagent in organic synthesis. It has been employed as a Lewis acid and an oxidant in various organic transformations. Furthermore, tropylium‐based compounds have emerged as functional materials, including organic dyes and stimuli‐responsive systems. This review summarizes recent developments in tropylium‐mediated organic synthesis and highlights the intriguing properties and potential applications of tropylium ion derivatives.

Source: Bulletin of the Korean Chemical Society

DOI: 10.1002/bkcs.70108

Authors: Soyoung Park, Hyo‐Jun Lee

Institutions: The University of Osaka, Kunsan National University

Language: English

Topic: Synthesis and Properties of Aromatic Compounds

Subfield: Organic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: bronze

Funders: National Research Foundation, National Research Foundation of Korea, Toyota Physical and Chemical Research Institute, Ministry of Science and ICT, South Korea

Awards: G1283578288, G2083744102