Synthesis, Structure, and Fluorescent Properties of [2.1.2.1]Metacyclophane Containing 2-(9-Anthryl)imidazoles

Abstract

The Albright-Goldman oxidation of [2.1.2.1]metacyclophane ([2.1.2.1]MCP, 2) containing hydroxy groups at the bridge yielded [2.1.2.1]MCP tetraone 3. The subsequent condensation reaction of 9-anthraldehyde afforded 2-(9-anthryl)imidazole-annulated [2.1.2.1]MCP 3. The UV and fluorescence spectra and their influence of sodium and lithium ion of the [2.1.2.1]MCP 2-(9-anthryl)imidazole adduct 4 were reported.