Gold-Catalyzed Oxidative Cyclizations of cis-3-En-1-ynes to Form Cyclopentenone Derivatives - Bhunia - 2012 - Angewandte Chemie International Edition - Wiley Online Library

Golden tendencies: The title reaction for synthesizing cyclopentenone derivatives utilizes a gold complex and 8-methylquinoline oxide as catalytic system (see scheme; IPr=1,3-bis(diisopropylphenyl)imidazol-2-ylidene). Such products are not attainable using diazocarbonyl reagents as the gold carbenoids tend towards reacting with C-H bonds.

DOI: 10.1002/anie.201108027