Effect of Metal Ions in Organic Synthesis; Part XXV. Simple Direct Synthesis of 1-Arylsulfonylamino-3-aminocarbonylpyrroles by Reaction of Arylsulfonylazoalkenes with 3-Oxoalkanamides under Copper(II) Chloride Catalysis - Attanasi, Orazio; Perrulli, Francesca R (Synthesis, 1984)