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Keywords:

  • C[BOND]H insertion;
  • cyclizations;
  • gold;
  • heterocycles;
  • synthetic methods
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Golden tendencies: The title reaction for synthesizing cyclopentenone derivatives utilizes a gold complex and 8-methylquinoline oxide as the catalyst system (see scheme; IPr=1,3-bis(diisopropylphenyl)imidazol-2-ylidene). Such products are not attainable using diazocarbonyl reagents, as the gold carbenoids tend to react with C[BOND]H bonds.