1,1-Dimethyl-1-phenacylhydrazinium bromide decomposes in n-pentyl alcohol under reflux to form dimethylamine hydrobromide (100%) and 2-benzoyl-4-phenylimidazole (65%)via initial rearrangement to 1,1-dimethyl-2-phenacylhydrazine followed by disproportionation of the latter; possible mechanisms for these transformations are discussed.
M. Koga and J.-P. Anselme, J. Chem. Soc., Chem. Commun., 1973, 53 DOI: 10.1039/C39730000053
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