Premium
Pyridazines. LXV. Reactions of some I‐phenacylazolopyridazinium halides with 2,3‐diphenylcyclopropenone, ‐thione, or hydrazine
Author(s) -
Koren B.,
Stanovnik B.,
Tišler M.
Publication year - 1974
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570110404
Subject(s) - chemistry , hydrazine (antidepressant) , azine , ring (chemistry) , medicinal chemistry , imidazole , halide , organic chemistry , polymer chemistry , chromatography
I‐Phenacylazolopyridazinium bromides reacted with 2,3‐diphenylcyclopropenone or ‐thione in the presence of triethylaminc to give 3,4,6‐triphenyl‐2‐pyrone or ‐2‐thiopyrone and the corresponding azolopyridazine. Quaternized azolopyridazines reacted with hydrazine to give either 3,6‐diphenylpyridazine and the corresponding azoloazine or hy ring opening of the azine part to give 1‐methyl‐2‐(pyrazolyl‐5′)imidazole.