A Catalytic Asymmetric Strecker-Type Reaction: Interesting Reactivity Difference between TMSCN and HCN This work was supported by CREST and RFTF. We thank Professor Kobayashi and Dr. Ishitani at the University of Tokyo for kindly showing us their recent results and the procedure for the preparation of HCN. We also thank Professor Hoveyda in Boston College for kindly showing us his recent results.