A New Method for the Synthesis of Pyridine and Pyrido[3,4-<i>d</i>]Pyridazine Derivatives
作者:José Barluenga、María José Iglesias、Vicente Gotor
DOI:10.1055/s-1987-28043
日期:——
The reaction of equimolecular amounts of N′-(3-imino-1-alkenyl)hydrazones and dimethyl acetylenedicarboxylate affords functionalized 2(1H)-pyridinones. Treatment of these compounds with mineral acid or base yields the new 1,7-dioxo-1,2,6, 7-tetrahydropyrido[3,4-d]pyridazines.