4H-1-BENZOPYRAN-4-ONE
- Product Name
- 4H-1-BENZOPYRAN-4-ONE
- CAS No.
- 15485-80-0
- Chemical Name
- 4H-1-BENZOPYRAN-4-ONE
- Synonyms
- 7-Hydroxy-4’-nitroisoflavone;7-Hydroxy-4'-nitroisoflavone;7-Hydroxy-4'-nitroisoflavone,98%;4H-1-Benzopyran-4-one, 7-hydroxy-3-(4-nitrophenyl)-
- CBNumber
- CB61013384
- Molecular Formula
- C15H9NO5
- Formula Weight
- 283.24
- MOL File
- 15485-80-0.mol
4H-1-BENZOPYRAN-4-ONE Property
- Melting point:
- 290-292℃
- Boiling point:
- 530.8±50.0 °C(Predicted)
- Density
- 1.494±0.06 g/cm3(Predicted)
- storage temp.
- 2-8°C
- pka
- 6.68±0.20(Predicted)
- form
- Powder
- color
- Pale yellow
- Water Solubility
- Slightly soluble in water.
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405Store locked up.
N-Bromosuccinimide Price
- Product number
- 7782AA
- Product name
- 7-Hydroxy-4'-nitroisoflavone
- Packaging
- 5g
- Price
- $107
- Updated
- 2021/12/16
- Product number
- PXT0001170
- Product name
- 7-HYDROXY-4'-NITROISOFLAVONE
- Purity
- 95.00%
- Packaging
- 5G
- Price
- $139.8
- Updated
- 2021/12/16
- Product number
- CM162532
- Product name
- 7-hydroxy-3-(4-nitrophenyl)-4H-chromen-4-one
- Purity
- 95%
- Packaging
- 25g
- Price
- $173
- Updated
- 2021/12/16
- Product number
- A152233
- Product name
- 7-Hydroxy-4'-nitroisoflavone
- Purity
- 97%
- Packaging
- 25g
- Price
- $182
- Updated
- 2021/12/16
- Product number
- A152233
- Product name
- 7-Hydroxy-4'-nitroisoflavone
- Purity
- 97%
- Packaging
- 5g
- Price
- $43
- Updated
- 2021/12/16
4H-1-BENZOPYRAN-4-ONE Chemical Properties,Usage,Production
Uses
7-Hydroxy-4'-nitroisoflavone is used in the synthesis of iso flavones, Synthesis of daidzin, soflavone amide derivatives.
Synthesis
104-03-0
108-46-3
15485-80-0
In the first reaction flask, resorcinol (0.72 g, 6.5 mmol), p-nitrophenylacetic acid (1.0 g, 6.0 mmol), and BF3/Et2O (10 mL) were added and the reaction was stirred for 90 min at 75 °C. Upon completion of the reaction, the reaction mixture was cooled to below 10 °C and DMF (10 mL) was slowly added under stirring. In a second reaction flask, DMF (20 mL) was added, cooled to below 10 °C, PCl5 (2.0 g, 9 mmol) was added in batches and stirred at 55 °C for 30 min. After the reaction was completed, cooled to below 10 °C, the mixture in the first reaction flask was added slowly and the reaction was continued for 1 h at room temperature. Upon completion of the reaction, the reaction solution was poured into hot dilute hydrochloric acid (0.1 N) with stirring, the solid was precipitated, filtered, washed with water and dried. The crude product was recrystallized from methanol to give 0.36 g of product in 16.4% yield.MS (ESI): m/z = 284 [M + H]+.
References
[1] Patent: CN104672192, 2017, B. Location in patent: Paragraph 0050; 0051; 0052; 0053
4H-1-BENZOPYRAN-4-ONE Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 4H-1-BENZOPYRAN-4-ONE manufacturers
- Product
- 4H-1-BENZOPYRAN-4-ONE 15485-80-0
- Price
- US $8.80/KG
- Min. Order
- 1KG
- Purity
- 97%-99%
- Supply Ability
- 100kg
- Release date
- 2019-07-09