Preparation of pyridines

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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546250, C07D21314

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active

043841201

ABSTRACT:
Pyridines are prepared by reacting a 2-alkoxy-2,3-dihydro-4H-pyran or a glutaraldehyde with ammonium nitrate in the presence of an aliphatic carboxylic acid and a catalytic amount of nitric acid.
The pyridines which can be prepared by the process according to the invention are useful starting materials for the preparation of dyes, drugs and pest control agents and are useful solvents.

REFERENCES:
patent: 3428034 (1969-11-01), Campbell et al.
patent: 3461127 (1969-08-01), Colchester
patent: 3492305 (1970-01-01), Colchester
patent: 3624090 (1971-11-01), Clark et al.

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