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CAS No. : | 68-95-1 | MDL No. : | MFCD00020837 |
Formula : | C7H11NO3 | Boiling Point : | No data available |
Linear Structure Formula : | CH3C(O)NCH(C3H6)CO2H | InChI Key : | GNMSLDIYJOSUSW-LURJTMIESA-N |
M.W : | 157.17 | Pubchem ID : | 66141 |
Synonyms : |
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Chemical Name : | Ac-Pro-OH |
Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H302-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 |
---|---|---|
79% | To a solution of compound 1 (3.18 mmol, 500 mg) in dichloromethane was slowly added a solution of dicyclohexylcarbodiimide (6.37 mmol, 656 mg) in dichloromethane at 10-15 C (duration 5.0 min) and the mixture was stirred at room temperature for 1 h. To this, ammonium bicarbonate (3.18 mmol, 305 mg) was added and the mixture was stirred for 1 h. The reaction was monitored by TLC. After completion of the reaction, the mixture was filtered and the residue was washed with dichloromethane. The filtrates were collected, combined, and concentrated under vacuum. The resulting gummy mass was suspended in tetrahydrofuran under stirring and diisopropyl ether was slowly added dropwise over 15 min. The mixture was then cooled to 0 C and allowed to stand at this temperature for 1 h. The resulting crystalline white solid was filtered, washed with diisopropyl ether, and dried under vacuum to afford the crude product 2. This was then purified by column chromatography to obtain (S)-1-acetylpyrrolidine-2-carboxamide 2. White solid (392 mg, 79%), mp 115 to 117 C, 1H NMR (300 MHz, CDCl3): δ 8.18 (s, 2H NH), 4.16 (t, 1H, J = 9.5 Hz, 6.1 Hz), 3.63 (t, 2H, J = 9.5 Hz, 6.0 Hz), 3.24 (q, 2H, J = 11.1 Hz, 7.1 Hz, 6.4 Hz), 2.48 (s, 3H), 2.19-2.26 (m, 2H); 13C NMR (300 MHz, CDCl3): δ 179.12, 175.54, 61.87, 50.07, 29.93, 24.32, 21.12; GC-MS m/z 156.20 (M+); Elemental Analysis: Calcd C7H12N2O2: C, 53.83; H, 7.74; N, 17.94; O, 20.49. Found C, 53.82; H, 7.76; N, 17.91; O, 20.48. |
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