Process for the preparation of 2,3,5-collidine and 2-ethyl-5-methylpyridine
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United States of America Patent
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Aug 29, 2000
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N/A
app pub date -
Jun 12, 1998
filing date -
Jun 16, 1997
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Expired
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Abstract
2,3,5-Collidine and 2-ethyl-5-methylpyridine are prepared in high yields at the same time by reacting methacrolein and methyl ethyl ketone with ammonia in a gas phase in the presence of a catalyst which comprises silica-alumina containing at least one element selected from the group consisting of cobalt, zinc, cadmium, thallium and lead.
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