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CAS No. : | 36239-09-5 | MDL No. : | MFCD00000736 |
Formula : | C5H7ClO3 | Boiling Point : | No data available |
Linear Structure Formula : | C2H5O2CCH2C(O)Cl | InChI Key : | KWFADUNOPOSMIJ-UHFFFAOYSA-N |
M.W : | 150.56 | Pubchem ID : | 118931 |
Synonyms : |
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Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P210-P264-P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338+P310-P363-P370+P378-P403+P235-P405-P501 | UN#: | 3265 |
Hazard Statements: | H227-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 |
---|---|---|
18.6% | With potassium hydroxide; In tetrahydrofuran; at 0 - 20℃; | To a solution of methanamine hydrochloride (2.24 g, 33.2 mmol) in THF (50 mL) was added KOH (4.09 g, 73.1 mmol). The reaction was cooled to 0 C and added ethyl 3-chloro- 3-oxo-propanoate (5.00 g, 33.2 mmol) slowly. The reaction was warmed to rt and stirred overnight. The reaction was quenched with water (20 mL), then extracted with EtOAc (100 mL x 4). The combined organic layers were washed with brine, dried over anhydrous Na2S04, filtered and concentrated in vacuo. The residue was purified by a silica gel column chromatography (EtO Ac/PE (v/v) = 1/2) to give the title compound as yellow liquid (0.89 g, 18.6%).MS (ESI, pos. ion) m/z: 146.1 [M+H]+;1H NMR (400 MHz, DMSO-76) d (ppm): 7.98 (s, 1H), 4.07 (q, j = 7.1 Hz, 2H), 3.19 (s, 2H), 2.59 (d, J= 4.6 Hz, 3H), 1.18 (t, J= 7.1 Hz, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
18.6% | With potassium hydroxide; In tetrahydrofuran; at 0 - 20℃; | To methylamine hydrochloride (2.24 g, 33.2 mmol)KOH (4.09 g, 73.1 mmol) was added to a solution of THF (50 mL).The reaction was cooled to 0 C.Ethyl 3-chloro-3-oxo-propionate (5.00 g, 33.2 mmol) was added slowly.The reaction was allowed to warm to room temperature and stirred overnight.The reaction was then quenched with water (20 mL).It was extracted with EtOAc (100 mL×4).The combined organic phases were washed with saturated brine.Dry over anhydrous sodium sulfate,Filter and concentrate under reduced pressure.The residue was purified by silica gel column chromatography (EtOAc /EtOAcThe title compound was obtained as a yellow oil (0.89 g, 18.6%). |