Title:
C-SUBSTITUTED PYRIDINE AND/OR HYDROGENATED C-SUBSTITUTED PYRIDINE MANUFACTURE
Document Type and Number:
Japanese Patent JPS57114571
Kind Code:
A
Abstract:
An improved process for the preparation of pyridines and/or hydrogened 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 over a first catalyst in a reaction zone to form a reaction mixture containing substituted pyridines and/or hydrogenated pyridines and hydrogen. A hydrogen-containing gas is separated from the reaction mixture and, prior to being recycled, is subjected to a two-step catalytic treatment. In the first catalytic treatment step, the hydrogen-containing gas is passed over an iron, nickel, cobalt, or platinum-containing catalyst at a temperature of between about 250 DEG and 550 DEG C. In the second catalytic treatment step, the hydrogen-containing gas is passed over an iron, nickel, or cobalt catalyst at a temperature of between about 550 DEG and 800 DEG C.
Inventors:
DE GURAAFU TEODOORASU FURANSHI
HEERUSHIYUBERUSU SHIYARURESU H
HEERUSHIYUBERUSU SHIYARURESU H
Application Number:
JP17954681A
Publication Date:
July 16, 1982
Filing Date:
November 09, 1981
Export Citation:
Assignee:
STAMICARBON
International Classes:
C07D215/00; B01J23/00; C07B61/00; C07D211/12; C07D213/08; C07D213/09; C07D215/04; C07D215/06; C07D295/027; C07D295/02; (IPC1-7): B01J23/40; B01J23/74; C07D211/12; C07D213/09; C07D215/00
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