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Cyclic quaternary ammonium salts Part VIII Imidazo12apyrazinium salts
Reactions of pyridine Noxides with 36dichloropyridazine
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acetic acetic acid acid action added addition afforded Amer amine aqueous atom azide base benzene bond bromide carbon carbon tetrachloride Chem Chemical chloride chloroform chromatographed chromatography column complex compound concentrated containing cooled corresponding crystallised crystals derivative described dissolved distilled dried elution ester ethanol ether evaporated extracted filtered followed formation formed Found fraction further gave give hydrochloric hydrogen hydroxide i.r. spectrum identical identified indicated isolated light petroleum mass material method methyl mixed mixture mmoles n.m.r. spectra needles observed obtained occurred oxidation peak phenol potassium precipitate prepared presence protons pyridine reaction reduced removed reported requires residue respectively ring room temperature salt sample Scheme separated showed shown signals similar sodium solid solution solvent stirred structure synthesis Table treated treatment washed yellow yield