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CAS No. : | 49705-98-8 | MDL No. : | MFCD00038587 |
Formula : | C12H16N2O4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 252.27 | Pubchem ID : | - |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
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* 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 |
---|---|---|
93.5% | N-Cbz-ThrNH2 (504 g, 2 mol) was dissolved in methanol, followed by addition of 10percent of Pd/C(50.4 g, 10 wt percent), and the resulting suspension was stirred at room temperature under hydrogen(1.0 MPa) for 12 h. Pd/C was filtered and the filtrate was evaporated in vacuum to furnish the crudeproduct as yellowish oily liquid, which was redissolved in 3 L of acetone, followed by slow addition ofa solution of HCl in iPrOH (500 mL) at 0?5 °C under stirring. The precipitated white solid was filteredand dried under high vacuum (45 °C, 0.1 MPa) to afford 1b 289 g (93.5percent yield). 1H-NMR (400 MHz,D2O) delta 4.15 (p, J = 6.1 Hz, 1H), 3.86 (d, J = 5.2 Hz, 1H), 1.25 (d, J = 6.5 Hz, 3H). 13C-NMR (101 MHz,D2O) delta170.25, 66.04, 58.40, 18.80. HRMS (ESI-TOF+) m/z ([M + H]+), calcd. for C4H11N2O2 + H+:119.0815, found 119.0817. |
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