Trimethylsilyl Trifluoromethanesulfonate as a Metal-Free, Homogeneous and Strong Lewis Acid Catalyst for Efficient One-Pot Synthesis of α-Aminonitriles and Their Fluorinated Analogues - Prakash, G K Surya; Panja, Chiradeep; Do, Clement; Mathew, Thomas; Olah, George A (Synlett, 2007)