139617-69-9

Upstream product

• 139617-87-1 5-Cyano-6-(2,4-dimethyl-phenylamino)-2-methyl-nicotinic acid ethyl ester 
• 139617-65-5 6-[Acetyl-(2,4-dimethyl-phenyl)-amino]-5-cyano-2-methyl-nicotinic acid ethyl ester 

Downstream Products

• 139617-83-7 1-(2,4-Dimethyl-phenyl)-7-methyl-4-oxo-2-(2-oxo-propyl)-1,4-dihydro-pyrido[2,3-d]pyrimidine-6-carboxylic acid ethyl ester 
• 139617-73-5 1-(2,4-Dimethyl-phenyl)-2,7-dimethyl-4-oxo-1,4-dihydro-pyrido[2,3-d]pyrimidine-6-carboxylic acid 
• 139617-76-8 1-(2,4-Dimethyl-phenyl)-2,7-dimethyl-4-oxo-1,4-dihydro-pyrido[2,3-d]pyrimidine-6-carboxylic acid hydroxyamide 
• 139617-80-4 1-(2,4-Dimethyl-phenyl)-2,7-dimethyl-4-oxo-1,4-dihydro-pyrido[2,3-d]pyrimidine-6-carboxylic acid hydrazide 

Relevant academic research and scientific papers

SYNTHESIS AND PROPERTIES OF 2-SUBSTITUTED 1-ARYL-7-METHYL-4-OXO-1,4-DIHYDROPYRIDOPYRIMIDINE-6-CARBOXYLIC ACIDS AND THEIR DERIVATIVES

Under the influence of hydrogen chloride 2-(N-acylarylamino)-6-methyl-5-ethoxycarbonylnicotinoitriles undergo cyclization to 2-substituted 1-aryl-7-methyl-4-oxo-6-ethoxycarbonyl-1,4-dihydropyridopyrimidines, which are converted by the action of alk