Process for preparing quinoline bases
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United States of America Patent
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Dec 23, 1997
Grant Date -
N/A
app pub date -
Jul 11, 1996
filing date -
Jul 11, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There are provided processes for preparing quinolines by vapor phase reaction of a substituted or unsubstituted aniline base, formaldehyde and a C.sub.2 -C.sub.4 aldehyde wherein the aldehydes:aniline base molar ratio is at least 2:1. More preferred processes of the invention achieve high selectivities and yields of 8-methylquinoline, and high conversions of the aniline base.
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