Synthesis of 5-Amino-1,10b-dihydro-2H-chromeno[3,4-c]pyridine-2,4(3H)-diones from Coumarins and Cyanoacetamides under Basic Conditions - Rosati, Ornelio; Curini, Massimo; Marcotullio, Maria Carla; Oball-Mond, Gildas; Pelucchini, Caroline; Procopio, Antonio (Synthesis, 2010)