Gold-Catalyzed Tandem Cycloisomerization and Dimerization of Chiral Homopropargyl Sulfonamides

We are grateful for the financial support from the National Natural Science Foundation of China (No. 21102119 and 21272191), the Natural Science Foundation of Fujian Province of China (No. 2012J01051), NFFTBS (No. J1210014), and PCSIRT. We also thank Professor Dr. Liming Zhang (University of California Santa Barbara) for the helpful discussions.