939-18-4

Basic information

• Product Name: 2H-1-Benzopyran-2-one, 3-bromo-
• Synonyms: 2H-1-Benzopyran-2-one, 3-bromo-;3-BROMO-2-CHROMENONE;3-Bromo-chromen-2-one;3-Bromo-2H-chromen-2-one
• CAS NO: 939-18-4
• Molecular Formula: C₉H₅BrO₂
• Molecular Weight: 225.0388
• Mol File: 939-18-4.mol
• Article Data: 1

Chemical Properties

• Melting Point: 250 °C
• Boiling Point: 344.3±30.0 °C(Predicted)
• Appearance: /
• Density: 1.738±0.06 g/cm3(Predicted)
• Storage Temp.: 2-8°C
• CAS DataBase Reference: 2H-1-Benzopyran-2-one, 3-bromo-(CAS DataBase Reference)
• NIST Chemistry Reference: 2H-1-Benzopyran-2-one, 3-bromo-(939-18-4)
• EPA Substance Registry System: 2H-1-Benzopyran-2-one, 3-bromo-(939-18-4)

Safety Data

• Hazardous Substances Data: 939-18-4(Hazardous Substances Data)

Usage

Uses

3-Bromo-2H-chromen-2-one is a derivative of Coumarin (C755380) and can be used to sensitize the inactivation of viruses.

Upstream product

• 42974-18-5 3,4-dibromo-3,4-dihydrocoumarin 

Downstream Products

• 10147-11-2 propargyl benzene 
• 955-10-2 3-phenylcumarin 
• 42189-35-5 3-(naphthalen-1-yl)-2H-chromen-2-one 
• 23000-33-1 3-(4-methoxyphenyl)coumarin 
• 14071-69-3 3-(4-methylphenyl)-2H-chromen-2-one 
• 364-58-9 3-(4-fluorophenyl)-2H-chromen-2-one 
• 125155-08-0 3-[(E)-2-phenylvinyl]-2H-chromen-2-one 
• 5415-73-6 3-bromo-6-nitro-2H-chromen-2-one 
• 496-41-3 Benzofuran-2-carboxylic acid 
• 133380-30-0 (E)-2-bromo-3-(o-hydroxyphenyl)-1-phenylprop-2-en-1-ol 

Relevant articles and documents

Dimethyl sulfoxide mediated elimination reactions in 3-aryl 2,3-dihalopropanoates: Scope and mechanistic insights

(Chemical Equation Presented) Dimethyl sulfoxide (DMSO) efficiently causes the reductive elimination of 3-aryl 2,3-dibromopropanoates to cinnamates with good yield. With 3-phenyl 2,3-dihalopropanoates, debromination is the major pathway providing 3-phenylacrylate derivatives in high yields, whereas dehydrobromination is a competing pathway with thiophene derivatives. 1H NMR, 81Br NMR, and MS techniques indicated the formation of brominated-DMSO, MeBr, and HBr as byproducts in this transformation with no evidence for the formation of Br2. The dual role of DMSO as a nucleophile and bromine scavenger accounts for the products formed in this reaction.