Synthesis of pyridine and alkylpyridines

Details Synthesis of pyridine and alkylpyridines Synthesis of pyridine and alkylpyridines

1979-05-09

1980-09-02

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546254, C07D21308, C07D21310

Patent

active

042207835

ABSTRACT:
A method is provided for synthesizing pyridine or alkylpyridines by reacting ammonia and a carbonyl reactant which is an aldehyde containing 2 to 4 carbon atoms, a ketone containing 3 to 5 carbon atoms or mixtures of said aldehydes and/or ketones under effective conditions in the presence of a catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index within the approximate range of 1 to 12 and recovering from the resulting reaction mixture, a product containing at least one compound of pyridine or an alkylpyridine. Addition of methanol and/or formaldehyde to the feed improves selectivity to unsubstituted pyridine.

REFERENCES:
patent: 2807618 (1957-09-01), Cislak et al.
patent: 3728408 (1973-04-01), Tobias
patent: 3946020 (1976-03-01), Minato et al.
patent: 4147874 (1979-04-01), Beschke et al.
patent: 4149002 (1979-04-01), Beschke et al.

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