Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1979-09-19
1981-06-30
Rollins, Alton D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
546195, 546166, 546249, 546251, 546185, 546184, 546181, C07D21104, C07D21106, C07D21506, C07D29502
Patent
active
042764190
ABSTRACT:
An improved process for the preparation of pyridines and/or hydrogenated pyridines that have been substituted with a hydrocarbon group at one or more carbon atoms, .gamma.-cyanoketone, in a gaseous phase and in the presence of hydrogen, is passed in a reaction zone over a first catalyst containing a catalytically active metal or compound of a metal selected from the group copper, silver, gold, iron, nickel, cobalt, ruthenium, rhodium, palladium, osmium, iridium and platinum to form a reaction mixture. A hydrogen-containing gas is separated from the reaction mixture, passed over a second catalyst containing a catalytically active metal or compound of a metal selected from the group iron, nickel and cobalt at a temperature of between 300.degree. and 800.degree. C., and the hydrogen-containing gas so treated is recycled to the reaction zone.
REFERENCES:
patent: 3007931 (1961-11-01), Simpson et al.
patent: 3247209 (1966-04-01), Schmerling
Geersheuvels Charles H.
Verheijen Egidius J. M.
Rollins Alton D.
Springer D. B.
Stamicarbon B.V.
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