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CAS No. : | 1194-87-2 | MDL No. : | MFCD00079617 |
Formula : | C6H7NO2S | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | BVGBBSAQOQTNGF-YFKPBYRVSA-N |
M.W : | 157.19 | Pubchem ID : | 16220058 |
Synonyms : |
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Chemical Name : | (S)-2-Amino-2-(thiophen-3-yl)acetic acid |
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 |
---|---|---|
Intermediate 5: (2S)-2-Amino-2-(3-thienyl)ethanamide; (2S)-Amino(3-thienyl)ethanoic acid (100mg) was dissolved in methanolic hydrochloric acid (1.25M, 5mL) and the solution left at room temperature for 3 days and then evaporated under a stream of nitrogen. The residue was treated with ammonium hydroxide (0.88d, 1 mL) in a sealed microwave vessel at 1000C for 10min and then cooled. Evaporation under a stream of nitrogen gave a residue which was <n="46"/>dissolved in methanol:dichloromethane (1 :1 ) and passed through a 1g aminopropyl cartridge. Evaporation of the eluent afforded impure title compound which was used without further purification.1H-NMR: (MeOD, 400 MHz) delta 7.68 (dd, 1 H), 7.54 (dd, 1 H), 7.24 (dd, 1 H)1 5.15 (s,1 H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; In 1,4-dioxane; at 0 - 20℃; | To respective amine compound (6.1 mmol) in dioxane (6 mL) and NaOH solution(0.5 M, 12 mL) was added slowly solution of di-tert-butyl dicarbonate (6.7 mmol) indioxane (6 mL) at 0C. The reaction mixture was warmed to RT and stirred overnight. The reaction mixture was then washed with hexanes (10 mL). The separated water layer was acidified using saturated solution of citric acid and extracted with ethyl acetate (3 x 15 mL). The organic layer was washed with brine, separated, dried over sodium sulfateand concentrated to give Boc protected amine compound as off-white solid (65-90%). |