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CAS No. : | 1711-07-5 | MDL No. : | MFCD00000670 |
Formula : | C7H4ClFO | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | SYVNVEGIRVXRQH-UHFFFAOYSA-N |
M.W : | 158.56 | Pubchem ID : | 74376 |
Synonyms : |
|
Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P260-P264-P280-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P310-P321-P363-P405-P501 | UN#: | 3265 |
Hazard Statements: | H314 | Packing Group: | Ⅱ |
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 |
---|---|---|
86.5% | With triethylamine In dichloromethane at 0 - 20℃; Inert atmosphere | To a solution of Ν,Ο-dimethylhydroxylamine hydrochloride (138 g, 1.42 mol) in DCM (1.5 L) was added Et3N (383 g, 3.78 mol) at room temperature (RT). To the stirred mixture, 1-1 (150 g, 946 mmol) was added dropwise at 0 °C under N2 atmosphere. The solution was stirred at the same temperature for 1 h, and then slowly warmed to RT for 10 h. The mixture was added to water (~1L) and extracted with EtOAc (2 x 500 mL). The combined organic phases were dried with Na2S04, filtered and concentrated. The residue was purified by flash column chromatography (eluent: PE) to give 1-2 as a white solid (150 g, yield: 86.5percent). 1H NMR (400 MHz, CDC13): δ 7.49-7.43 (1 H, m), 7.41-7.32 (2 H, m), 7.18- 7.10 (1 H, m), 3.54 (3 H, s), 3.34 (3 H, s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86.5% | With triethylamine In dichloromethane at 0 - 20℃; for 11 h; Inert atmosphere | 10264] To a solution of N,O-dimethylhydroxylamine hydrochloride (138 g, 1.42 mol) in DCM (1.5 L) was addedEt3N (383 g, 3.78 mol) at RT. To the stirred mixture, G-1 (150 g, 946 mmol) was added dropwise at 00 C. under N2 atmosphere. The solution was stirred at the same temperature for 1h, and then slowly warmed to RT for 10 h. The mixture wasadded to water (.—1 L) and extracted with EtOAc (2x500 mE).The combined organic phases were dried with Na2504, filtered and concentrated. The residue was purified by flashcolunm chromatography (eluent: PE) to give G-2 as a white solid (150 g, yield: 86.5percent). ‘H NMR (400 MHz, CDC13): ? 7.49-7.43 (1H, m), 7.41-7.32 (2H, m), 7.18-7.10 (1H, m),3.54 (3H, s), 3.34 (3H, s). |