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CAS No. : | 29547-04-4 | MDL No. : | MFCD00130152 |
Formula : | C5H8Br2O2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | DQHIGEQXJBMKKY-UHFFFAOYSA-N |
M.W : | 259.92 | Pubchem ID : | 296716 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P301+P312-P302+P352-P304+P340-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
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* 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 |
---|---|---|
93% | With caesium carbonate; In N,N-dimethyl-formamide; at 20 - 50℃; for 3h; | <strong>[2105-96-6]4-<strong>[2105-96-6]fluoro-3-nitrophenol</strong></strong> (500 mg, 3.18 mmol) was dissolved in DMF (6365 mu) at room temperature. Cesium Carbonate (1244 mg, 3.82 mmol) was added followed by methyl 2,4-dibromobutanoate (910 mg, 3.50 mmol). The mixture was stirred at room temperature for 2 hours and then heated to 50 C for an additional hour. The reaction was diluted with 1/2 saturated NaCl solution (aq), extracted with EtOAc, dried with Na2S04, filtered and concentrated to give 93 A (tan oil, 0.99 g, 2.95 mmol, 93percent) NMR (400 MHz, chloroform-d) delta: 8.01 (s, 1H), 7.56-7.60 (m, 1H), 7.20-7.24 (m, 1H), 4.91 (dd, J=8.4, 4.4 Hz, 1H), 3.79 (s, 3H), 3.60 (dd, J=7.5, 5.3 Hz, 2H), 2.42-2.58 (m, 2H) |
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