Indium Trichloride Catalyzed Synthesis of 2-Aryl-3-aminobenzofuran Derivatives by a Three-Component Reaction of Phenols, Arylglyoxal Monohydrates and para-Toluenesulfonamide - Chen, Cong-Xi; Liu, Li; Yang, Dong-Peng; Wang, Dong; Chen, Yong-Jun (Synlett, 2005)