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CAS No. : | 59718-84-2 | MDL No. : | MFCD03789583 |
Formula : | C8H9NO2 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | CCQFKEITVOTHIW-UHFFFAOYSA-N |
M.W : | 151.16 | Pubchem ID : | 12264487 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H315-H319-H335 | 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 |
---|---|---|
80.6% | With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile); In tetrachloromethane; at 90℃; for 16h;Inert atmosphere; | A mixture of methyl 3-methylpicolinate (4.1 g, 27.1 mmol), NBS (5.8 g, 32.5 mmol), and AIBN (100 mg, 0.61 mmol) in carbon tetrachloride (55 mL) was stuffed at 90 C for 16 h under nitrogen. The mixture was filtered and concentrated before being purified by column chromatography to give the desired product (5.0 g, 80.6%). ?H NMR (400 MHz, CDC13, ): 8.67 (dd, J= 1.6, 4.6 Hz, 1 H), 7.91 (dd, J= 1.5, 7.9 Hz, 1 H), 7.48 (dd, J= 4.6, 7.9 Hz, 1 H), 4.95 (s, 2 H), 4.07 - 4.03 (m, 3 H). LCMS (mlz): 229.9 (M+1). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydride; In 1,2-dimethoxyethane; for 4h;Heating / reflux; | 5 g quantity of methyl 3- [2- (3-benzyloxy-4-methoxy phenyl) oxazol-4-yl] propionate obtained in Reference Example 48 <n="118"/>and 3.2 g of <strong>[59718-84-2]methyl 3-methylpicolinate</strong> were dissolved in 150 ml of dimethoxyethane. While stirring the solution with ice cooling 1.2 g of sodium hydride was added thereto and further stirred. The reaction mixture was heated and refluxed for 4 hours. At the completion of the reaction, a saturated aqueous ammonium chloride solution was added to the mixture while stirring with ice cooling, and the mixture was further stirred. After stirring the reaction mixture for 30 minutes, water was added thereto and ethyl acetate extraction was performed. The organic layer was washed twice with water, and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (n- hexane: ethyl acetate = 2:1), thereby yielding 5.5 g of colorless oily substance methyl 2- [2- (3-benzyloxy-4-methoxyphenyl) oxazol-4- ylmethyl] -3- (3-methylpyridin-2-yl) -3-oxopropionate. 1H-NMR (CDCl3) δ: 8.49 (IH, dd, J = 4.8, 1.2 Hz), 7.59-7.28 (1OH, m), 6.91 (IH, d, J = 9.0 Hz), 5.23-5.16 (3H, m) , 3.91 (3H, s) , 3.65 (3H, s), 3.37-3.18 (2H,m,) 2.59 (3H, s) |
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