# Action of hot alkaline KMnO4 on tert butyl benzene

Side chain oxidation of aryl alkanes takes place if there is at least one alpha hydrogen present by all accounts I presumed that there would be no reaction. However the answer given was trimethyl acetic acid. Is the answer key wrong?

$\large{•}$ Chromium Oxidations in Organic Chemistry; By G. Cainelli, G. Cardillo