Preparation of pyridine

Details Preparation of pyridine Preparation of pyridine

1974-07-29

1976-07-20

Moatz, Harry I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D21310

Patent

active

039706559

ABSTRACT:
Pyridine is prepared by reacting acetaldehyde, ammonia and oxygen at elevated temperatures and in the presence of a condensation catalyst, the oxygen (or air) oxidatively demethylating, in situ, the picolines and/or higher condensation products produced along with pyridine. A second embodiment includes incorporating methanol in the above reaction mixture. A third embodiment includes incorporating isobutyraldehyde in the above reaction mixture. These processes obviate the need for formaldehyde as a reactant.

REFERENCES:
patent: 3829428 (1974-08-01), Hargis
Ishiguro et al., Chem. Abst., vol. 46, col. 504 e-f (1952).
Leitis et al., Chem. Abst., vol. 61, col, 4304f (1965).

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