General Characteristics Upon nucleophilic attack by secondary amines, 1-(2,4-dinitrophenyl)pyridinium chloride (the Zincke salt) opens up to give 5-aminopenta-2,4-dienal (the Zincke aldehyde). ...
General Characteristics Upon nucleophilic attack by secondary amines, 1-(2,4-dinitrophenyl)pyridinium chloride (the Zincke salt) opens up to give 5-aminopenta-2,4-dienal (the Zincke aldehyde). ...