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Synthesis 1993; 1993(6): 575-576
DOI: 10.1055/s-1993-25908
short paper
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A New and Simple Synthesis of Fluoren-9-ones

M. M. V. Ramana* , P. V. Potnis
  • *Department of Chemistry, University of Bombay, Vidyanagari, Santacruz (East), Bombay 400098, India
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Publication Date:
17 September 2002 (online)

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Ethyl cyclohexene-1-carboxylate (1) undergoes reaction with various aromatic substrates in presence of concentrated sulfuric acid to give cis-1,2,3, 4,4a,9a-hexahydrofluoren-9-ones 3a-f which on dehydrogenation afforded the corresponding fluoren-9-ones 4a-f in good yield. Fluorenones with an alkoxy group in the meta-orientation with respect to carbonyl group have also been prepared.