Abstract
A microscale procedure is described for the formation of the industrially-important compound α-tetralone. This is an example of an intramolecular Friedel–Crafts acylation, utilizing 4-phenylbutanoic acid and a proton source. The title reaction demonstrates the concept of ring-forming reactions and highlights the use of carboxylic acids as an electrophile precursor in electrophilic aromatic substitution reactions.
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