S-1 Heptane-Soluble Ring-Closing Metathesis Catalysts Chayanant Hongfa, Jianhua Tian, Hassan S. Bazzi,* and David E. Bergbreiter* Supporting Information Table of Contents General Experimental S2 Synthesis of PIB Supported Grubbs-Hoveyda 2 nd Generation Catalyst S3-S6 Catalytic Reactions S7-S9 ICP-MS Digestion Procedure S10 Spectra S11-S21 References S22