55982-08-6

Upstream product

• 20280-81-3 4-methoxycoumarin 
• 1670-14-0 benzamidine monohydrochloride 
• 76853-96-8 bromo-3 phenylcarbonimidoylamino-4 coumarine 
• 76853-92-4 chloro-3 phenylcarbonimidoylamino-4 coumarine 
• 42974-18-5 3,4-dibromo-3,4-dihydrocoumarin 
• 57753-09-0 3-bromo-4-methoxy-2H-chromen-2-one 
• 76853-89-9 3-chloro-4-methoxy-2H-chromen-2-one 
• 76853-98-0 bromo-5 (hydroxy-2 phenyl)-6 oxo-4 phenyl-2 dihydro-3,4 pyrimidine 
• 76853-94-6 chloro-5 (hydroxy-2 phenyl)-6 oxo-4 phenyl-2 dihydro-3,4 pyrimidine 

Relevant academic research and scientific papers

Sur les possibilites de formation de pyrimidines a partir d'halogeno-3 methoxy-4 coumarines

3-chloro and 3-bromo-4-methoxycoumarins are tranformed by guanidine into 2-amino-5-halo-6-(2-hydroxyphenyl)-4-oxo-3,4-dihydropyrimidines.However, by treatment with benzamidine and acetamidine they lead, not only to the expected pyrimidines, but also to th