Supporting Information A Palladium-Catalyzed Approach to Polycyclic Sulfur Heterocycles Andrew Martins and Mark Lautens* Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S 3H6 Canada. mlautens@chem.utoronto.ca Table of Contents General Information………………………………..……...…………………………….S2 General Procedure……………………………………..…………….…………………..S3 Experimental Data………………………………….……………………………………S4 Representative Spectra (in numerical order)…………………………………...………S16