67438-96-4

Upstream product

• 1118-61-2 3-Aminocrotononitrile 
• 555-16-8 4-nitrobenzaldehdye 
• 763-33-7 (E)-3-aminocrotononitrile 
• 140429-25-0 N-pyridinium chloride 

Downstream Products

• 111564-29-5 1,2,6-Trimethyl-4-(4-nitro-phenyl)-1,4-dihydro-pyridine-3,5-dicarbonitrile 
• 119559-33-0 4-(4'-hydroxyaminophenyl)-2,6-dimethyl-3,5-dicyano-1,4-dihydropyridine 
• 111512-77-7 3,5-dicyano-2,6-dimethyl-4-(p-nitrophenyl)pyridine 
• 1068639-55-3 N-(2,4-dicyano-1,5-dimethyl-3-(4'-nitrophenyl)cyclopenta-2,4-dienyl)-2',2',2'-trifluoroacetamide 
• 111564-35-3 1,2,6-Trimethyl-4-(4-nitro-phenyl)-1,2-dihydro-pyridine-3,5-dicarbonitrile 
• 111512-82-4 2,6-Dimethyl-4-(4-nitro-phenyl)-1,2-dihydro-pyridine-3,5-dicarbonitrile 

Relevant academic research and scientific papers

Novel syntheses of heterocycles with N-(1-haloalkyl)azinium halides. Part 2. Preparation of N-unsubstituted 1,4-dihydropyridines

N-(1-Chloroalkyl)pyridinium chlorides, prepared from thionyl chloride, pyridine, and aldehydes, readily react with enaminocarbonyl derivatives to yield 1,4-dihydropyridines under mild and neutral conditions.