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Gold-Catalyzed Oxidative Cyclizations of cis-3-En-1-ynes To Form Cyclopentenone Derivatives

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  • We thank the National Science Council, Taiwan, for financial support of this work.

Abstract

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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.

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