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CAS No. : | 67927-44-0 | MDL No. : | MFCD00694789 |
Formula : | C8H6BrNO2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | OASANCDKMGODJO-UHFFFAOYSA-N |
M.W : | 228.04 | Pubchem ID : | 379590 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H332-H335 | Packing Group: | N/A |
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 |
---|---|---|
79% | With potassium carbonate; In acetone; at 20℃; for 4h; | Example 3: Scheme B2; To a solution of B2.1 (1 equiv., 23 mmol, 5.0 g) in acetone (230 ml) were successively added potassium carbonate (1.5 equiv., 35 mmol, 5.0 g) and iodomethane (1.2 equiv., <n="37"/>28 mmol, 4.0 g); the mixture was stirred at room temperature for 4 h. The acetone solvent was partially concentrated under reduced pressure; this mixture was poured on a IN aqueous HCl solution, filtered and successively washed with water, isopropanol and isopropyl ether, affording a pink powder B2.2 (4.22 g, yield = 79%, purity (LC) = 99%). |
With potassium carbonate; In acetone; at 80℃; for 3h; | Step 1: 6-bromo-3-methyl-1, 3-benzoxazol-2(3H)-one A mixture of <strong>[19932-85-5]6-bromo-1,3-benzoxazol-2(3H)-one</strong> (Aldrich, catNo.697036: 0.32 g, 1.5 mmol), methyl iodide (0.28 mL, 4.5 mmol) and potassium carbonate (210 mg, 1.5 mmol) in acetone (3 mL) was heated to 80 C. and stirred for 3 h. The reaction mixture was cooled to room temperature then diluted with water and extracted with EtOAc. The combined extracts were dried over Na2SO4, filtered and concentrated. The residue was used in the next step without further purification. LC-MS calculated for C8H7BrNO2 (M+H)+: m/z=228.0. found 227.9. |
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