Producing pyridines aromatically or heteroaromatically substituted in the 2 position
CA 1085850 A · Owner: Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler · Inventors: Beschke, Helmut; Friedrich, Heinz; Offermanns, Heribert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides 3 process for producing pyridines which are aromatically or heteroaromatically substituted in the 2 position, in which aliphatic-aromatic or aliphatichetero-aromatic ketones are reacted at temperatures from approximately 250 to 550°C with aliphatic oxo compounds which, have an unsaturated carbon bond adjacent to the oxo group in, the gas phase in the presence of ammonia and in the presence of a catalyst having dehydrating and dehydrogenating properties.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted September 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 16, 1997.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.