Production of pyridyl ketones

Details Production of pyridyl ketones Production of pyridyl ketones

1974-12-11

1976-09-07

Randolph, John D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D21350

Patent

active

039794008

ABSTRACT:
Pyridyl ketones are produced from substituted pyridines containing at least one lower alkyl group or aryl-methylene group connected to a carbon of the pyridine nucleus by a methylene radical of such group, by air oxidizing the pyridine in the liquid phase at elevated temperature, e.g., 200.degree. C., and pressure, e.g., 400 psig. The reaction is preferably carried out in the presence of an inorganic oxidation catalyst, such as a heavy metal or oxide or hydrated oxide or inorganic salt thereof, but with some pyridines, especially 2-substituted and 4-substituted pyridines, reaction occurs without a catalyst. The reaction mixture is fractionated to recover the pyridyl ketone and unreacted starting material.

REFERENCES:
patent: 3075989 (1963-01-01), Godin et al.
patent: 3118899 (1964-01-01), Cislak
Klingsberg, Pyridine and Its Derivatives, Part Four, frontispage and p. 145, Interscience Publishers (1964).

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