Rearrangement of 1,1-dimethyl-1-phenacylhydrazinium bromide
Abstract
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.