Indium(III) Chloride/Silica Gel-Promoted Facile and Rapid Cyclization of 2-Aminochalcones to 2-Aryl-2,3-dihydroquinolin-4(1H)-ones under Solvent-Free Conditions - Kumar, K Hemanth; Muralidharan, D; Perumal, P T (Synthesis, 2004)