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CAS No. : | 51677-09-9 | MDL No. : | MFCD02159553 |
Formula : | C11H9NO3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | XMPLCJOQBDGMKT-UHFFFAOYSA-N |
M.W : | 203.19 | Pubchem ID : | 905953 |
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 |
---|---|---|
81% | With silver tetrafluoroborate; phenol In tetrahydrofuran for 12 h; Reflux | General procedure: To a solution of alkynyl oxime ether 1 (0.15 mmol) in THF (5 mL) were added phenol (28 mg, 0.3 mmol) and AgBF4 (5.8 mg, 0.03 mmol), with a drying tube filled with silica gel at room temperature. After being stirred at reflux for 1-12 h (TLC monitoring), the reaction mixture was concentrated under reduced pressure. The residue was purified by preparative TLC (hexane/AcOEt=3-10:1) to afford isoxazole 3. The physical and spectroscopic data of 3a5 and 3j12h were in accord with those reported in the literature. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
31% | With triethylamine In diethyl ether at 20℃; for 9.5 h; Inert atmosphere | To a stirred solution of methyl chlorooximidoacetate (235 mg, 1.71 mmol) and phenylacetylene (0.38 mL, 3.42 mmol) in Et2O (8.55 mL) was added Et3N (0.47 mL, 3.42 mmol) at rt under N2 and the resultingsolution was stirred for 9.5 h. Sat. NH4Cl aq. was added to the reaction mixture and the resultingsolution was extracted with AcOEt. The combined organic layer was dried over Na2SO4 andconcentrated in vacuo. The crude product was purified by flash column chromatography on silica gel(hexane/AcOEt = 5/1). The product was obtained as pale yellow oil (108 mg, 31percent); |
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