Biao Lu, Yuxue Li, Youliang Wang, Donald H. Aue, Yingdong Luo and Liming Zhang “[3,3]-Sigmatropic Rearrangement versus Carbene Formation in Gold-Catalyzed Transformations of Alkynyl Aryl Sulfoxides: Mechanistic Studies and Expanded Reaction Scope” J. Am. Chem. Soc., 2013, 135, 8512-8524 [Link]