8-BROMO-2H-1-BENZOPYRAN-2-ONE
- Product Name
- 8-BROMO-2H-1-BENZOPYRAN-2-ONE
- CAS No.
- 33491-30-4
- Chemical Name
- 8-BROMO-2H-1-BENZOPYRAN-2-ONE
- Synonyms
- 8-bromocoumarin;8-Bromochromen-2-one;8-BroMo-2H-chroMen-2-one;8-BROMO-2H-1-BENZOPYRAN-2-ONE;2H-1-Benzopyran-2-one, 8-bromo-
- CBNumber
- CB62453781
- Molecular Formula
- C9H5BrO2
- Formula Weight
- 225.04
- MOL File
- 33491-30-4.mol
8-BROMO-2H-1-BENZOPYRAN-2-ONE Property
- Melting point:
- 135-136 °C(Solv: methanol (67-56-1))
- Boiling point:
- 352.2±37.0 °C(Predicted)
- Density
- 1.688±0.06 g/cm3(Predicted)
- storage temp.
- Sealed in dry,Room Temperature
N-Bromosuccinimide Price
- Product number
- B694958
- Product name
- 8-Bromo-2h-1-benzopyran-2-one
- Packaging
- 25mg
- Price
- $45
- Updated
- 2021/12/16
- Product number
- FB144206
- Product name
- 8-Bromo-2H-1-benzopyran-2-one
- Packaging
- 100mg
- Price
- $52
- Updated
- 2021/12/16
- Product number
- FB144206
- Product name
- 8-Bromo-2H-1-benzopyran-2-one
- Packaging
- 250mg
- Price
- $105
- Updated
- 2021/12/16
- Product number
- W5516
- Product name
- 8-Bromo-2H-1-benzopyran-2-one
- Packaging
- 100mg
- Price
- $120
- Updated
- 2021/12/16
- Product number
- FB144206
- Product name
- 8-Bromo-2H-1-benzopyran-2-one
- Packaging
- 500mg
- Price
- $180
- Updated
- 2021/12/16
8-BROMO-2H-1-BENZOPYRAN-2-ONE Chemical Properties,Usage,Production
Synthesis
1829-34-1
33491-30-4
3-Bromo-2-hydroxybenzaldehyde (402 mg, 2.0 mmol) was used as starting material and dissolved in N-methylpyrrolidone (NMP, 5 mL). Subsequently, ethoxymethylene triphenylphosphine (765 mg, 2.2 mmol) was added to this solution. The reaction mixture was heated at 210 °C for 3 hours. Upon completion of the reaction, the mixture was cooled to room temperature and subsequently partitioned between water and ethyl acetate. The organic and aqueous layers were separated and the organic layer was dried with anhydrous magnesium sulfate (MgSO?). The product was purified by rapid column chromatography on silica gel (eluent ratio 2:1 hexane/ethyl acetate), resulting in 8-bromo-2H-1-benzopyran-2-one (116 mg, 26% yield) as a light beige solid. The mass spectrum (electrospray ionization, ES) showed m/e of 227.0 ([M + H]+).
References
[1] Patent: WO2007/118130, 2007, A2. Location in patent: Page/Page column 28-29
[2] Heterocycles, 2003, vol. 59, # 1, p. 217 - 224
8-BROMO-2H-1-BENZOPYRAN-2-ONE Preparation Products And Raw materials
Raw materials
Preparation Products
8-BROMO-2H-1-BENZOPYRAN-2-ONE Suppliers
- Tel
- 021-31261262/ 49 (0)17662837245
- Fax
- (0)21-33250524
- sales@novochemy.com
- Country
- Germany
- ProdList
- 6328
- Advantage
- 58
View Lastest Price from 8-BROMO-2H-1-BENZOPYRAN-2-ONE manufacturers
- Product
- 8-BROMO-2H-1-BENZOPYRAN-2-ONE 33491-30-4
- Price
- US $1.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 20T
- Release date
- 2024-08-14
- Product
- 8-BROMO-2H-1-BENZOPYRAN-2-ONE 33491-30-4
- Price
- US $1.00/g
- Min. Order
- 1g
- Purity
- 99.0%
- Supply Ability
- 100kg
- Release date
- 2020-01-09