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CAS No. : | 13073-25-1 | MDL No. : | MFCD02683216 |
Formula : | C6H4BrNO3 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | VEJSIOPQKQXJAT-UHFFFAOYSA-N |
M.W : | 218.00 | Pubchem ID : | 13545453 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P501-P270-P264-P280-P337+P313-P301+P312+P330 | UN#: | |
Hazard Statements: | H302-H315-H319 | 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 |
---|---|---|
With oxalic acid; silica gel; sodium nitrite; In dichloromethane; water; at 20℃; for 0.5h; | 2-bromophenol (20 g, 0.116 mol), sodium nitrite (48 g, 0.696 mol)Oxalic acid (43.7 g, 0.347 mol) was dissolved in 500 ml of dichloromethane,Add SiO211.5g under stirring, and then slowly add the water 11.5ml,After stirring, continue stirring at room temperature for 30 min. The reaction solution is directly filtered,The filter cake was washed twice with dichloromethane and 200 ml / time. The organic layer was dried over anhydrous sodium sulfate,Filtered and evaporated to dryness under reduced pressure to give 27.8 g of crude product,By petroleum ether column chromatography can get the main product 7.2g (TLC a main point, with a small amount of bit impurity). |