Diethyl ketone and methyl ethyl ketone combine with ammonia in the gas phase on a platinum-silica catalyst at elevated temperatures, yielding 2,6-diethyl-3-methylpyridine and a mixture of 2,3,6-trimethylpyridine and 2-methyl-6-ethylpyridine, respectively; in the absence of ammonia 1,3-dimethyl-4-ethylbenzene and a mixture of o- and p-xylene are formed.
R. Hamilton, M. A. McKervey and J. J. Rooney, J. Chem. Soc., Chem. Commun., 1976, 1038 DOI: 10.1039/C39760001038
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