Canadian Journal of Chemistry

Photolysis of heptamethylbenzenonium cation in aqueous acids. Preparation of pentamethylcyclopentadiene

RF Childs, M Zeya, RP Dain

Index: Childs, Ronald F.; Zeya, Maung; Dain, Robert P. Canadian Journal of Chemistry, 1981 , vol. 59, p. 76 - 79

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Citation Number: 6

Abstract

Irradiation of heptamethylbenzenium ion in a variety of aqueous acids using light of wavelength greater than 350 nm leads to the formation of pentamethylcyclopentadiene and acetone. In 50% HBF4 and 70% HClO4 this photolysis is very clean and can be used as a convenient preparation of pentamethylcyclopentadiene. A mechanism is proposed for the reaction.