Abstract:Die Dialkylamino‐ bzw. Alkoxyalkenine (I) reagieren mit β‐Amino‐crotonsäure‐ äthylester (IIa) (bei 50‐60°C) bzw. Acetylacetoimin (IIb) (bei 100°C) in Gegenwart von NH4‐acetat in Eisessig zu Gemischen (Ausbeute 20‐45%) der isomeren Pyridine (III) (Anteil etwa 90%) und (IV).
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