Synthesis of 2-Aminoindole-3-carboxylic Acid Derivatives by the Copper(I) Iodide Catalyzed Reaction of N-(2-Iodophenyl)formamides with Malononitrile or Cyanoacetates - Kobayashi, Kazuhiro; Komatsu, Toshihide; Yokoi, Yuki; Konishi, Hisatoshi (Synthesis, 2011)