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Synlett 1999; 1999(5): 587-589
DOI: 10.1055/s-1999-2691
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An Effective Synthesis of Angular Tricyclic Compounds Having Two Contiguous Quaternary Centers by Intramolecular Pauson-Khand reaction of Exocyclic Enynes

Miyuki Ishizaki* , Kazuhiko Iwahara, Kumiko Kyoumura, Osamu Hoshino
  • *Faculty of Pharmaceutical Sciences, Science University of Tokyo, 12, Ichigaya Funagawara-machi, Shinjuku-ku, Tokyo 162, Japan; Fax 81-3-32 68-30 45; E-mail: hoshino@ps.kagu.sut.ac.jp
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Publication Date:
31 December 1999 (online)

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Intramolecular Pauson-Khand reaction of various alkynyl exo-alkylidene-cyclohexanes and pentane gave angular type 6-5-5 and 5-5-5 tricyclic compounds bearing two contiguous quaternary centers in moderate to high yield.

Pauson-Khand reaction - exocyclic enynes - angular tricyclic compounds - quaternary centers