139617-64-4

Upstream product

• 108-24-7 acetic anhydride 
• 134828-44-7 6-(3-Bromo-phenylamino)-5-cyano-2-methyl-nicotinic acid ethyl ester 

Downstream Products

• 139617-81-5 1-(3-Bromo-phenyl)-7-methyl-4-oxo-2-(2-oxo-propyl)-1,4-dihydro-pyrido[2,3-d]pyrimidine-6-carboxylic acid ethyl ester 
• 139617-85-9 1-(3-bromophenyl)-2-acetonyl-7-methyl-4-oxo-1,4-dihydropyrido<2,3-d>pyrimidine-6-carboxylic acid 
• 139617-78-0 1-(3-Bromo-phenyl)-2,7-dimethyl-4-oxo-1,4-dihydro-pyrido[2,3-d]pyrimidine-6-carboxylic acid hydrazide 
• 139617-71-3 1-(3-Bromo-phenyl)-2,7-dimethyl-4-oxo-1,4-dihydro-pyrido[2,3-d]pyrimidine-6-carboxylic acid 
• 139617-67-7 1-(3-Bromo-phenyl)-2,7-dimethyl-4-oxo-1,4-dihydro-pyrido[2,3-d]pyrimidine-6-carboxylic acid ethyl ester 

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