Sur l'acylation des méthylfluorènes IV. [1] Benzoylation du méthyl-4-fluorène

Benzoylation of 4-methylfluorene according to Friedel-Crafts in carbon disulfide with aluminium chloride yielded two benzoyl derivatives: 5-methyl-2-benzoyl-fluorene (II) (major product), and 4-methyl-2-benzoyl-fluorene (III). By oxidation II and III gave the corresponding 9-oxo-derivatives, the structure of the last compounds being proved by an independent way.