3-Phenacylpyridinium and 3-phenacylquinolinium methiodides are shown to react with hydrazine–potassium hydroxide and hydrazine respectively to give 4-alkyl-6-phenylpyridazines and 4-(2-aminobenzyl)-6-phenylpyridazines respectively. 3-Benzoylpyridinium methiodide gives 3-phenyl-4-propylpyrazole with hydrazine–potassium hydroxide, then catalytic reduction.
M. M. Baradarani and J. A. Joule, J. Chem. Soc., Perkin Trans. 1, 1980, 72 DOI: 10.1039/P19800000072
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