The reaction of α,β-unsaturated ketones with cerium (IV) sulfate tetrahydrate [Ce(SO 4 ) 2 ·4H 2 O, CS] in acetic acid gave the corresponding β-acetoxy ketones. In the case of 2-cyclohexen-1-one with CS in acetic acid, benzobicyclo[2.2.2]octen-2-one was obtained. The reaction mechanism also was proposed. Moreover, we report the aromatization and esterification of (R)-(−)-carvone by CS in acetic acid.
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