1638273-90-1

Basic information

• Product Name: 3-[(Z)-(4-BROMOANILINO)METHYLIDENE]-2H-CHROMENE-2,4-DIONE
• Synonyms: 3-[(Z)-(4-BROMOANILINO)METHYLIDENE]-2H-CHROMENE-2,4-DIONE;2H-1-Benzopyran-2,4(3H)-dione, 3-[[(4-bromophenyl)amino]methylene]-, (3Z)-;(3Z)-3-{[(4-bromophenyl)amino]methylidene}-3,4-dihydro-2H-1-benzopyran-2,4-dione
• CAS NO: 1638273-90-1
• Molecular Formula: C16H10BrNO3
• Molecular Weight: 344.16
• Mol File: 1638273-90-1.mol
• Article Data: 2

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 3-[(Z)-(4-BROMOANILINO)METHYLIDENE]-2H-CHROMENE-2,4-DIONE(CAS DataBase Reference)
• NIST Chemistry Reference: 3-[(Z)-(4-BROMOANILINO)METHYLIDENE]-2H-CHROMENE-2,4-DIONE(1638273-90-1)
• EPA Substance Registry System: 3-[(Z)-(4-BROMOANILINO)METHYLIDENE]-2H-CHROMENE-2,4-DIONE(1638273-90-1)

Safety Data

• Hazardous Substances Data: 1638273-90-1(Hazardous Substances Data)

Upstream product

• 52817-14-8 4-oxo-4H-chromene-3-carboxamide 
• 106-40-1 4-bromo-aniline 
• 51751-34-9 4-hydroxycoumarin-3-carboxaldehyde 

Relevant articles and documents

Ring transformation of chromone-3-carboxamide under nucleophilic conditions

The chemical reactivity of chromone-3-carboxamide was studied towards a series of nitrogen and carbon nucleophiles. Treatment of carboxamide with some primary amines gave chromane-2,4-diones. Condensation of carboxamide with hydrazine hydrate, phenyl hydrazine and hydroxylamine hydrochloride afforded chromenopyrazoles and chromenoisoxazole, respectively. Reaction of carboxamide with guanidine hydrochloride, cyanoguanidine and thiourea resulted in ring transformation producing chromenopyridines. The chemical behavior of carboxamide was also studied towards ethylenediamine, o-phenylenediamine, 2-aminophenol and 2-aminothiophenol. A variety of products were isolated from the reaction of carboxamide with some carbon nucleophiles.