Supporting Information : Kim, Kim, and Chang SI-1 Supporting Information Copper-Mediated Selective Cyanation of Indoles and 2-Phenylpyridines with Ammonium Iodide and DMF Jinho Kim, Hyunwoo Kim and Sukbok Chang * Department of Chemistry and Molecular-Level Interface Research Center, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea. 1. General SI-2 2. Optimization for the Cyanation of 1-Methyl-1H-indole SI-2 3. Preparation of Substrates SI-3 4. Cu-Mediated Cyanation of Indoles with NH 4 I and DMF SI-7 5. Reaction Profile of 1-Methyl-1H-indole SI-12 6. Intermediate Experiment with 3-Iodo-1-methyl-1H-indole SI-12 7. Cu-Mediated Cyanation of 2-Phenylpyridines with NH 4 I and DMF SI-13 8. References SI-13 9. Spectral data of new compounds SI-14