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CAS No. : | 14794-31-1 | MDL No. : | MFCD00000751 |
Formula : | C6H9ClO3 | Boiling Point : | No data available |
Linear Structure Formula : | C2H5OOC(CH2)2COCl | InChI Key : | IXZFDJXHLQQSGQ-UHFFFAOYSA-N |
M.W : | 164.59 | Pubchem ID : | 84648 |
Synonyms : |
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Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P280-P305+P351+P338-P310 | UN#: | 3265 |
Hazard Statements: | H314 | Packing Group: | Ⅱ |
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 |
---|---|---|
6% | With boron trifluoride diethyl etherate; In dichloromethane; at 20℃; for 4h; | To a suspension of compound 3 (15 g, 0.11 mol) and compound 4 (21 g, 0.13 mol) in Dichloroethane (300 mL) was added BF3C2H6O (15 g, 0.11 mol) in one portion. The mixture was stirred at RT for 4 h. After standing overnight, the reaction mixture was heated to reflux for 4 h, then cooled to RT. The formed precipitate was filtered and washed with water and EA, dried to afford the crude ethyl 4-(2,4-dihydroxy-5-methoxyphenyl)-4-oxobutanoate (20 g, 69% yield) as yellow oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With pyridine; In tetrahydrofuran; for 16h; | A solution of 2-amino-3-methyl benzamide (8) (200 mg, 1.33 mmol) in anhydrous THF (20mL) was treated with pyridine (136 mg, 1.73 mmol) and 4-ethoxy-4- oxobutanoyl chloride (240 mg, 1.46 mmol). The mixture was stirred for 16 h. Evaporation and chromatography (EtOAc) gave (10) (342 mg, 92%) as a white solid: mp 181-183C; NMR ((CD3)2SO) delta 1.17 (3 H, t, / = 7.0 Hz), 2.14 (3 H, s), 2.56 (4 H, m), 4.05 (2 H, q, / = 7.0 Hz), 7.09 (1 H, t, / = 8.0 Hz), 7.30-7.34 (3 H, m), 7.52 (1 H, brs), 9.53 (1 H, s); 13CNMR ((CD3)2SO) delta 14.13, 18.17, 29.02, 30.29, 59.92, 125.74, 125.85, 131.81, 133.61, 133.91, 135.87, 169.48, 169.89, 172.26; MS (ES) m/z 279.1261 (M + H)+ (Ci4Hi9N204 requires 279.1267). |