Process for preparing alkenyl-substituted heterocycles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 22, 2003
Grant Date -
Sep 5, 2002
app pub date -
Oct 22, 2001
filing date -
Oct 20, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Described are preferred processes for preparing alkenyl-substituted nitrogenous heterocycles such as vinylpyridines, which comprise reacting a corresponding methyl-substituted heterocycle with a C.sub.1 compound such as formadehyde in the vapor phase over a zeolite catalyst having acidic and basic catalytic sites. The preferred zeolite is a medium-pore zeolite, for example having a constraint index of about 0.5 to about 12. Processes of the invention can be conducted as facile, one-step syntheses utilizing relatively low ratios of alkyl-substituted starting heterocycle (e.g. .alpha.-picoline or .gamma.-picoline) to formaldehyde while nonetheless achieving high selectivities and yields of the corresponding alkenyl compound.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully