Kosary, Judit published the artcileStudies of pyridazine-ring-containing compounds. 17. Synthesis of 6-methoxypyridazine-3-carboxaldehyde, HPLC of Formula: 89532-79-6, the publication is Magyar Kemiai Folyoirat (1983), 89(12), 567-8, database is CAplus.
The method of T. Nakagome (1962) for preparation of the title compound I was improved. 3-Methyl-6-chloropyridazine, purified on a Silica Gel 60 column, was oxidized with H2O2 to give 56% 3-methyl-6-chloropyridazine 2-oxide, which was methoxylated with NaOMe to give 90% 3-methyl-6-methoxypyridazine 2-oxide. Acetylation of the latter gave 78% (6-methoxy-3-pyridazinylmethyl)acetate which was heated with 10% HCl to give 87% 6-methoxypyridazine-6-methanol. Subsequent oxidation with MnO2 gave 63% I. Alternatively, the oxidation was carried out with SeO2 (65% yield). I was converted into 6-methoxy[1,2,3]triazolo[1,5-b]pyridazine (II) by the method of J. Kosari (1980).
Magyar Kemiai Folyoirat published new progress about 89532-79-6. 89532-79-6 belongs to pyridazine, auxiliary class Pyridazine,Alcohol,Ether, name is (6-Methoxypyridazin-3-yl)methanol, and the molecular formula is C6H8N2O2, HPLC of Formula: 89532-79-6.
Referemce:
https://en.wikipedia.org/wiki/Pyridazine,
Pyridazine | C4H4N2 – PubChem