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The preparation of -methyl ketone N,N,N-trimethylhy drazonium iodides (3) and fluoborates (4) is described. The pyrolysis of 4 affords predominately 2,6-diary lpyridines (5). The mechanism, which resembles the Hantzch synthesis, is proposed for the construction of the pyridine ring with the y carbon arising from the trimethylamine moiety; this proposed pathway is substantiated by the pyrolytic mass spectral, radiolabeling, and product analysis data.

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