Inexpensive Phthalic Acid Promoted Domino Povarov Reaction between Anilines and N-Vinylamides: An Efficient Preparation of Privileged 4-Substituted 2-Methyl-1,2,3,4-tetrahydroquinoline Scaffolds - Kouznetsov, Vladimir V.; Merchan Arenas, Diego R.; Ortiz Areniz, César J.; Meléndez Gómez, Carlos M. (Synthesis, 2011)