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CAS No. : | 162102-79-6 | MDL No. : | MFCD09910266 |
Formula : | C9H8BrNO4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | WYROXHCDUWIUMW-UHFFFAOYSA-N |
M.W : | 274.07 | Pubchem ID : | 11953411 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P280-P305+P351+P338-P310 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H332-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 |
---|---|---|
59% | With tetrakis(triphenylphosphine) palladium(0); sodium hydrogencarbonate; In methanol; water; toluene; at 70℃; for 19h;Inert atmosphere; | A mixture of 4-bromopyridine-2,6-dicarboxylic acid dimethyl ester (548 mg, 2.00 mmol), 1-methylindole-2-boronic acid (402 mg, 2.30 mmol), sodium bicarbonate (342 mg, 4.07 mmol), and tetrakis(triphenylphosphine)palladium (68 mg, 0.08 mmol) was placed in a 100 mL-flask and dried under vacuum for 2.5 h. In a separate flask, a mixture of toluene (30 mL), methanol (7.5 mL) and water (7.5 mL) was degassed by bubbling argon gas for 2.5 h. The degassed solvent mixture was added to the dried reagents and the combined ingredients were stirred under argon atmosphere at 70 C. After stirring for 19 h, the mixture was cooled to room temperature, diluted with dichloromethane, washed with brine and dried over sodium sulfate. After rotary evaporation, the residue was purified using silica gel chromatography (40% ethyl acetate in hexanes) to provide 5 (420 mg, 59% yield) as a light yellow solid. 1H NMR (400 MHz, CDCl3) δ 8.47 (s, 2H), 7.69 (td, J = 1.00, 7.60 Hz, 1H), 7.42 (dd, J = 0.80, 8.40 Hz, 1H), 7.35 (dt, J = 1.20, 8.40 Hz, 1H), 7.20 (ddd, J = 1.20, 7.20, 8.00 Hz, 1H), 6.91 (d, J = 0.80 Hz, 1H), 4.07 (s, 6H), 3.88 (s, 3H). 13C NMR (101 MHz, CDCl3) δ 165.26, 148.76, 143.28, 139.89, 136.60, 127.66, 127.00, 123.88, 121.62, 120.86, 110.23, 105.73, 53.54, 31.97. |
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