Fluorene has been acylated with phthalic anhydride and with homophthalic anhydride; the products have been briefly studied. Reaction of fluorenoyl chloride with methyl homoveratrate gave methyl-4,5-dimethoxy-2(2-fluorenoyl)phenylacetate which was converted, in several stages, into a dihydrodibenzanthrazulene. The latter underwent oxidation to carbonyl compounds rather than dehydrogenation.