69932-31-6

Basic information

• Product Name: 4H-1-Benzopyran-4-one, 3-bromo-2-methyl-
• CAS NO: 69932-31-6
• Molecular Formula: C10H7BrO2
• Molecular Weight: 239.068
• Mol File: 69932-31-6.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: 4H-1-Benzopyran-4-one, 3-bromo-2-methyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 4H-1-Benzopyran-4-one, 3-bromo-2-methyl-(69932-31-6)
• EPA Substance Registry System: 4H-1-Benzopyran-4-one, 3-bromo-2-methyl-(69932-31-6)

Safety Data

• Hazardous Substances Data: 69932-31-6(Hazardous Substances Data)

Upstream product

• 16636-62-7 1-(2'-hydroxyphenyl)butane-1,3-dione 
• 5751-48-4 2-methylchromone 

Downstream Products

• 90-47-1 xanth-9-one 
• 1172141-15-9 (E)-3-[2-(3,4-dimethoxyphenyl)vinyl]-2-methyl-4H-chromen-4-one 
• 1172141-11-5 (E)-3',4'-dibenzyloxy-3-bromo-2-styryl-4H-chromen-4-one 
• 1172141-14-8 (E)-3-[2-(4-methoxyphenyl)vinyl]-2-methyl-4H-chromen-4-one 
• 1172141-13-7 (E)-2-methyl-3-(2-phenylvinyl)-4H-chromen-4-one 
• 882303-12-0 2-(3,4-dimethoxyphenyl)-3-phenyl-9H-xanthen-9-one 
• 882303-11-9 3-phenyl-2-(4-methoxyphenyl)xanthone 
• 752233-11-7 (E)-3-bromo-2-(2-phenylvinyl)-4H-chromen-4-one 
• 882303-09-5 (E)-4'-benzyloxy-3-bromo-2-(2-phenylvinyl)-4H-chromen-4-one 
• 69932-39-4 2-methyl-3-morpholin-4-yl-chromen-4-one 
• 69932-38-3 2-methyl-3-piperidino-chromen-4-one 

Relevant articles and documents

Cooperativity within the catalyst: alkoxyamide as a catalyst for bromocyclization and bromination of (hetero)aromatics

Alkoxyamide has been reported as a catalyst for the activation ofN-bromosuccinimide to perform bromocyclization and bromination of a wide range of substrates in a lipophilic solvent, where adequate suppression of the background reactions was observed. The key feature of the active site is the alkoxy group attached to the sulfonamide moiety, which facilitates the acceptance as well as the delivery of bromonium species from the bromine source to the substrates.

Efficient synthesis of chromones with alkenyl functionalities by the heck reaction

The usefulness of the Heck reaction in the field of chromones has been demonstrated. Bromochromones with the halogen atom in their rings A and B were reacted with various terminal alkenes to give hitherto unknown alkenyl-substituted chromones. Reactivity of the substrates was found to markedly depend on the position of the bromine atom. Under phosphine-free conditions using a phase-transfer catalyst additive (tetrabutylammonium bromide), shorter reaction periods and usually higher yields were obtained.

Electrohalomethoxylation of Chromone Derivatives

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