Dehydroaromatization with V₂O₅

Abstract

Vanadium pentoxide is evaluated as a dehydroaromatization reagent. Tetrahydrocarbazole is readily aromatized by V₂O₅ in refluxing acetic acid under both stoichiometric and catalytic conditions. Indoline, tetrahydroquinoline, and tetrahydroquinoxaline are effectively aromatized by V₂O₅/silica in refluxing toluene.

Key words

oxidation - arenes - heterocycles - vanadium pentoxide - carbazoles

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