Single pot process for preparing metal nicotinates from beta-picoline
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United States of America Patent
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Apr 4, 2006
Grant Date -
Jun 19, 2003
app pub date -
Oct 29, 2002
filing date -
Oct 26, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a single-pot process for the preparation of metal nicotinates, useful as a dietary supplement, from beta picoline as a source of the starting material, said process comprising the steps hydrosulfonation of beta picoline with sulfuric acid, heating the reaction mixture thus obtained to a temperature of about 150°-210° C. followed by oxidation with a suitable oxidizing agent to obtain nicotinic acid sulfate, reacting the nicotinic acid sulfate with a water soluble zinc and/or chromium salt to produce a solid metal nicotinate and separating it to thereby recover the corresponding metal nicotinates of high purity.
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