87930-55-0

Basic information

• Product Name: ethyl 3-phenylamino-4-oxochromen-2-carboxylate hydrobromide
• CAS NO: 87930-55-0
• Molecular Weight: 390.233
• Mol File: 87930-55-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: ethyl 3-phenylamino-4-oxochromen-2-carboxylate hydrobromide(CAS DataBase Reference)
• NIST Chemistry Reference: ethyl 3-phenylamino-4-oxochromen-2-carboxylate hydrobromide(87930-55-0)
• EPA Substance Registry System: ethyl 3-phenylamino-4-oxochromen-2-carboxylate hydrobromide(87930-55-0)

Safety Data

• Hazardous Substances Data: 87930-55-0(Hazardous Substances Data)

Upstream product

• 344439-88-9 ethyl 3-bromo-2-hydroxy-4-oxochroman-2-carboxylate 
• 65950-31-4 ethyl 2-hydroxy-4-oxochroman-2-carboxylate 
• 7250-94-4 o-acetoxyacetophenone 
• 87930-53-8 ethyl 3-bromo-4-oxochromene-2-carboxylate 
• 62-53-3 aniline 

Relevant articles and documents

Benzopyrones. Part 19. Synthesis and some Reactions of Ethyl 3-Bromo-4-oxochromen-2-carboxylate

The product of the condensation of o-hydroxyacetophenone and diethyl oxalate, ethyl 2-hydroxy-4-oxochroman-2-carboxylate (13), slowly and partially isomerises in solution to the phenolic ketone (16), but in the presence of mineral acid, it is rapidly dehydrated directly to ethyl 4-oxochromen-2-carboxylate (2; R = Et).Bromination of the oxochroman (13) gave a 72:28 mixture of epimeric 3-bromo-esters.The major isomer (trans-OH,H) was readily dehydrated to give the title compound which contains a reactive bromine atom.