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CAS No. : | 734529-57-8 | MDL No. : | MFCD04113693 |
Formula : | C9H10N2O4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | SJBFILRQMRECCK-QMMMGPOBSA-N |
M.W : | 210.19 | Pubchem ID : | 706689 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-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 |
---|---|---|
With hydrogenchloride; In 1,4-dioxane; | 34A: (S)-ethyl 3-amino-3-(3-nitrophenyl)propanoate hydrochloride salt; [00367] (S)-3-Amino-3-(3-nitrophenyl)propanoic acid (500 mg, 2.4 mmol) was dissolved in 2.0 HCl in dioxane (2 mL) and concentrated in vacuo. In a separate flask thionyl chloride (0.21 mL, 2.8 mmol) was added to ethanol at -100C. The ethanolic solution was stirred for 20 min at -10 0C then added to the HCl salt of (S)-3~amino-3- (3-nitrophenyl)propanoic acid. The resulting solution was stirred at ambient temperature for 1 h and at 40 C for 3 h. The reaction mixture was concentrated in vacuo to yield 34A (600 mg, 92%) as a white solid. MS (ESI) m/z 239.09 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70 g | With hydrogenchloride; In ethyl acetate; at 5 - 20℃; for 2.0h; | The intermediate (V-1) (120 g) was added to ethyl acetate (200 mL).2N HCl in ethyl acetate (200 mL) was added dropwise at 5 C and stirred at room temperature for 2 h.TLC showed the reaction was complete.The organic phase was concentrated to 200 mL and then washed with water (100 ml* 2).After combining the aqueous phases, adjust the pH to 6 with 2N aqueous sodium hydroxide solution.There is a lot of solid precipitation,After filtration and drying, a pure product of the formula (I-1) is obtained.(70 g, total yield 40.3%). |
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