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CAS No. : | 61348-47-8 | MDL No. : | MFCD00218653 |
Formula : | C9H7NO2 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | DBDXTIAEVFSDNN-UHFFFAOYSA-N |
M.W : | 161.16 | Pubchem ID : | 578506 |
Synonyms : |
|
Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H315-H319-H335 | Packing Group: | |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
5.22 g | With hydroxylamine hydrochloride; In ethanol; at 78℃; for 1h; | To a 100 mL flask was added 15 mL N-methylpyrrolidone, 1-(2-hydroxyphenyl) ethanone (5.03 g, 36.87mmol) and dimethoxy-N,N-dimethylmethanamine (6.21 g, 52.15 mmol) at room temperature. Thereaction mixture was heated to 90 C, stirred at 90 C for 40 min, then cooled to room temperature.Ethanol (50 mL) and hydroxylamine hydrochloride (3.84 g, 55.19 mmol) were added, then the solutionwas heated to 78 C and stirred for 1 h. The reaction mixture was concentrated. The residue washeated to 45 C, then, 125 mL water was added dropwise over 0.5 h. The solution was stirred at 45 Cfor 30 min, then cooled to room temperature and stirred overnight before the solid was collected byfiltration, washed with 20 mL water and dried in an evaporator at 50 C for 4 h to afford 2-(isoxazol-5-yl)phenol as a white solid 5.22 g, (87.7%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87.3% | With potassium carbonate; In ethanol; water; at 75℃; for 19h; | To a 250 mL flask was added 2-(isoxazol-5-yl)-3-methoxyphenol (5.02 g, 31.15 mmol), potassiumcarbonate (6.03 g, 43.63 mmol), ethanol (50 mL), and water (25 mL) at room temperature. Thereaction mixture was heated to 90 oC (oil bath temperature) and stirred for 19 h. The solution wasconcentrated, then, dichloromethane (50 mL) was added. The solution was stirred at roomtemperature for 1 h, then, filtered. The solid product was washed with water (2.5 mL) anddichloromethane (25 mL) then dried in an evaporator at 50 C to afford 2-amino-5-methoxy-4Hchromen-4-one (4.38 g, 87.3% yield) as a light yellow solid. |
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