Intramolecular trapping of cyclobutadiene

  • Grubbs R
  • Pancoast T
  • Grey R
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The cyclobutadieneiron tricarbonyls I and II were prepd. from III by treatment with KR. Successive photolysis and Ce(IV) oxidn. of I gave 83% 5-methylisochroman. (IV) oxidn. of II gave 50% 4-methylphthalan. [on SciFinder(R)]

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  • Robert H. Grubbs

  • Taylor A. Pancoast

  • Roger A. Grey

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