| 摘要 |
Process for the production of 3,5-dialkylpyridines. An aldehyde having the formula R-CH2-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 DEG to 280 DEG 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 DEG C. have an acid dissociation constant of 106 to 10-12.
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