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CAS No. : | 6940-80-3 | MDL No. : | MFCD03840382 |
Formula : | C10H15NO | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | PJXWCRXOPLGFLX-VIFPVBQESA-N |
M.W : | 165.23 | Pubchem ID : | 5356540 |
Synonyms : |
|
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 |
---|---|---|
60% | Step 1: (S)-Alininol (17.5 g, 233 mmol), PhCHO (26 g), and MgSO4 (70 g) were taken up in DCM and stirred at 25 0C for 19 h. The solution was filtered and concentrated which furnished a yellow solid. The residue was taken up in MeOH and cooled to O 0C. Sodium borohydride (11 g, 288 mmol) was added in portions to the solution at 0 0C (gas evolution). After the addition, the solution was stirred at 25 0C for 18 h. The solution was concentrated, and the residue was quenched carefully with 3 M HCI (aq.) (gas evolution/exotherm). The aqueous acidic layer was extracted with Et2O (4 X 200 ml_). The aqueous layer was cooled to 0 0C and made basic via addition of NaOH pellets (pH = 11 -12). The aqueous layer was extracted with DCM. The combined DCM layers were dried (MgSO4). Filtration and concentration gave 23.2 g (60percent) of the amino-alcohol as a white solid. | |
Preparation 11; Sodium triacetoxyborohydride (36.7 g) was added portion wisely to a mixture of (2S)-2-amino-1-propanol (10.0 g) and benzaldehyde (13.53 ml) in a mixture of dichloromethane (140 ml) and acetic acid (8.38 ml) at 0° C. and the whole was stirred at room temperature overnight. The mixture was washed successively with 2N sodium hydroxide and brine, and dried over sodium sulfate. The solution was evaporated under reduced pressure and the resulting residue was purified by column chromatography on silica gel using a mixed solvent of dichloromethane and methanol (30:1). The fractions containing the objective compound were collected and evaporated under reduced pressure to give (2S)-2-benzylamino-1-propanol (15.96 g). IR (KBr): 2843, 1496, 1454, 1377, 1340, 1065 cm-1 NMR (CDCl3, delta): 1.10 (3H, d, J=6.4 Hz), 2.77-2.93 (1H, m), 3.28 (1H, dd, J=10.6 and 6.9 Hz), 3.61 (1H, dd, J=10.6 and 4.0 Hz), 3.75, 3.87 (2H, ABq, J=13 Hz), 7.21-7.34 (5H, m) MASS (API-ES): 166 (M+H)+ | ||
With hydrogen;5% Pd(II)/C(eggshell); In ethanol; at 20℃; for 8h; | [Preparation 6]: Synthesis of Compound 6(1) Optically-Active Compound of 2-benzylaminopropan-1-olTo a solution of (S)-(+)-2-aminopropan-1-ol (50.0 g) and benzaldehyde (74 ml) in ethanol (500 ml) was added 5percent palladium carbon (5.0 g), and the mixture was hydrogenated at room temperature under ordinary pressure for 8 hours. The reaction mixture was filtered through Celite, and concentrated under reduced pressure to give the titled compound (111.2 g).1H-NMR (DMSO-D6) delta: 7.34-7.27 (4H, m), 7.23-7.18 (1H, m), 4.53-4.47 (1H, m), 3.76 (1H, d, J=13.5 Hz), 3.66 (1H, d, J=13.5 Hz), 3.29-3.24 (2H, m), 2.65-2.55 (1H, m), 1.99 (1H, br s), 0.93 (3H, d, J=6.4 Hz). |
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