127019-06-1

Upstream product

• 127019-03-8 3-amino-1,2,3,4,6,7,8,9-octahydropyrimido<4,5-b>quinoline-2,4-dione 
• 100-52-7 benzaldehyde 
• 127018-99-9 2-(3-Phenyl-ureido)-5,6,7,8-tetrahydro-quinoline-3-carboxylic acid phenylamide 
• 2318-25-4 ethyl 3-ethoxy-3-iminopropanoate hydrochloride 
• 127018-93-3 ethyl 2-<(N-phenylcarbamoyl)amino>-5,6,7,8-tetrahydroquinoline-3-carboxylate 
• 127018-94-4 3-phenyl-1,2,3,4,6,7,8,9-octahydropyrimido<4,5-b>quinoline-2,4-dione 
• 127018-96-6 2-amino-5,6,7,8-tetrahydroquinoline-3-carboxanilide 
• 67960-36-5 ethyl 2-amino-5,6,7,8-tetrahydroquinoline-3-carboxylate 

Relevant academic research and scientific papers

SYNTHESIS OF 1,2,3,4,6,7,8,9-OCTAHYDROPYRIMIDOQUINOLINE-2,4-DIONE

In the presence of hydrazine hydrate or sodium ethylate, ethyl 2--5,6,7,8-tetrahydroquinoline-3-carboxylate is converted to 3-amino- or 3-phenyl-1,2,3,4,6,7,8,9-octahydropyrimidoquinoline-2,4-dione.Compounds analogous to the latter are also obtained during heating of 2-amino-5,6,7,8-tetrahydroquinoline-3-carboxylic arylamides with phenyl isocyanate of from their N-phenylcarbamoyl derivatives.