Process for the production of 3,5-dialkylpyridines

Details Process for the production of 3,5-dialkylpyridines Process for the production of 3,5-dialkylpyridines

1982-07-07

1984-01-31

Bond, Robert T.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

25218831, C07D21309

Patent

active

044291310

ABSTRACT:
Process for the production of 3,5-dialkylpyridines. An aldehyde having the formula R--CH.sub.2 --CHO, wherein R is a straight-chained or branched alkyl radical having 1 to 6 carbon atoms, and/or an acetal of such aldehyde is reacted with formaldehyde and/or hexamethylene tetramine and/or a formaldehyde acetal and/or a polymer of formaldehyde in liquid or aqueous phase at a temperature of 180.degree. to 280.degree. C. in a closed vessel in the presence of ammonia and/or ammonium ions and in the presence of anions of an inorganic and/or an organic acid, both of which at 20.degree. C. have an acid dissociation constant of 10.sup.6 to 10.sup.-12.

REFERENCES:
patent: 4337342 (1982-06-01), Dinkel

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