Further observations on the catalytic transformation of benzoic anhydrides into fluorenones and biphenyls

Jochanan Blum, David Milstein, Yoel Sasson

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The catalytic conversion of benzole anhydrides into fluorenones and biphenyls by several rhodium compounds has been studied. Mixtures of aromatic anhydrides react generally as if they were mixed anhydrides, leading to the formation of asymmetrically substituted products. Equimolar amounts of the isolated phenyl-rhodium complex PhRhCl(PPh3)2 (7) and chlorocarbonylbis(triphenylphosphine)rhodium (2) react at 250° to give fluorenone and biphenyl. Both these compounds are assumed to be formed via the same rhodium intermediate.

Original languageEnglish
Pages (from-to)3233-3237
Number of pages5
JournalJournal of Organic Chemistry
Issue number10
Publication statusPublished - 1970


ASJC Scopus subject areas

  • Organic Chemistry

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