Formation of cyclooctatetraenes from zirconacyclopentadienes

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Tamotsu Takahashi, Wen-Hua Sun and Kiyohiko Nakajima


Abstract

Treatment of zirconacyclopentadienes with 2 equiv. of CuCl at room temperature and with 1 equiv. of NBS at –78 °C selectively afforded cyclooctatetraene derivatives in good yields.


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