Process for the production of substituted pyridine (B)

Details Process for the production of substituted pyridine (B) Process for the production of substituted pyridine (B)

1977-09-06

1979-10-02

Randolph, John D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546251, 546252, C07D21302, C07D21308

Patent

active

041699513

ABSTRACT:
Pyridines substituted in the 2- and 3-positions by aromatic or heteroaromatic groups are prepared by reacting an aromatic or heteroaromatic substituted ketone which has at least one reactive methylene group adjacent to the keto group with an aliphatic oxo compound having a carbon to carbon ethylenic double bond on the carbon atom adjacent to the oxo group and ammonia in the presence of a dehydrating and dehydrogenating catalyst at a temperature of about 250.degree. to 550.degree. C.

REFERENCES:
patent: 2877228 (1959-03-01), Mahan
patent: 2926074 (1960-02-01), Berger
patent: 3898177 (1975-08-01), Beschke et al.
patent: 3917542 (1975-11-01), Beschke et al.
patent: 3932421 (1976-01-01), Minato et al.
patent: 3960766 (1976-06-01), Beschke et al.
Vereschagin et al., Russian Chemical Reviews, vol. 30, pp. 426 to 429 (1961).
Tschitschibabin, J. Prakt. Chem., vol. 107, pp. 122 to 126, (1924).
Parcell et al., J. Org. Chem., vol. 28, pp. 3468 to 3473 (1963).

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