Tetrahedron

Pyrrole studies: 31. The structures of potentially tautomeric 1, 2-dihydro-6H-pyrrolo [3, 4-d] pyridazine-1-ones and 1, 2, 3, 4-tetrahydro-6H-pyrrolo [3, 4-d] pyridazine-1, …

S Inel, RA Jones, C Ogretir

文献索引：Inel, Sermin; Jones, R. Alan; Ogretir, Cemil Tetrahedron, 1984 , vol. 40, # 20 p. 3979 - 3986

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被引用次数: 3

摘要

1, 2-Dihydro-6H-pyrrolo [3, 4-d] pyridazine-1-ones exist predominantly as such (104-47: 1) in equilibrium with the 1-hydroxypyridazine form, whereas 1, 2, 3, 4-tetrahydro-6H-pyrrolo-[3, 4-d] pyridazine-1, 4-diones in equilibrium with the monohydroxy-oxo tautomeric forms are preferred by a factor of only ca. 100: 1. It was not possible to determine the position of equilibrium between the 1-hydroxy-6H-pyrrolo [3, 4-d] pyridazine-4-one and the 1, 4- ...