A gold(I)-catalyzed intramolecular oxidation-cyclopropanation sequence of 1,6-enynes: a convenient access to [n.1.0]bicycloalkanes

A gold(I)-catalyzed tandem oxidation/cyclopropanation reaction of 1,6-enynes with an external oxidant has been developed. This quite simple and rapid strategy will provide a safe, mild and versatile avenue to numerous carbo-and hetero [n.1.0]bicyclic frameworks.