129116-97-8Relevant articles and documents
A Convenient Synthesis of Pyridazine-3,4-dicarboxylic Acid by a Hetero Diels-Alder Reaction
Vors, Jean-Pierre
, p. 579 - 582 (2007/10/02)
A convenient route to prepare unsubstituted pyridazine-3,4-dicarboxylic acid on a preparative scale is described.The synthesis involves a hetero Diels-Alder reaction between a new 1,2-diaza-1,3-diene and ethyl vinyl ether and oxidation of the intermediate 1,4,5,6-tetrahydropyridazine as the key step.