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CAS No. : | 31775-67-4 | MDL No. : | MFCD02683551 |
Formula : | C5H12ClNO | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 137.61 | 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 |
---|---|---|
99% | To a solution of trans-2-azido-cyclopentanol (1.0 g, 7.87 mmol) in EtOAc, was added 10% Pd/C (0.5 g). The mixture was flushed with Ar, and then stirred on Parr apparatus at 40 psi for 2 h at 23. The mixture was filtered through celite and the celite was washed with EtOAc. The filtrate was acidified with 3 mL of 4N HCl in 1,4-dioxane, and a white solid was precipitated. The mixture was filtered and the solid was collected to give the desired product (0.76 g, 99%). 1H NMR (MeOD-d4): delta 4.09-4.04 (m, 1H), 3.29-3.25 (m, 1H), 2.18 (m, 1H), 2.03 (m, 1H), 1.83-1.80 (m, 2H), 1.65-1.58 (m, 2H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
84% | With N-ethyl-N,N-diisopropylamine; In dichloromethane; at 20℃; for 20h; | N,N-diisopropylethylamine (1.269 mL, 7.27 mmol) was added to a stirred suspension of 2-aminocyclopentanol hydrochloride (1.00 g, 7.27 mmol) and di-t-butyl dicarbonate (1.687 mL, 7.27 mmol) in dichloromethane (45 mL). After 20 h at room temperature, the clear solution was concentrated. Silica gelchromatography, eluting with 0 to 50% ethyl acetate in hexanes, gave tert-butyl trans- 2-hydroxycyclopentylcarbamate as white solid (1.23 g, 84% yield). XH NMR (400 MHz, chloroform-if) delta ppm 5.00 (1 H, br. s.), 3.99-4.29 (1 H, m), 3.81-3.93 (1 H, m), 3.53 (1 H, td, J=7.81, 5.72 Hz), 1.93-2.06 (1 H, m), 1.80-1.93 (1 H, m), 1.61-1.74 (1 H, m), 1.45-1.61 (2 H, m), 1.34 (9 H, s), 1.23-1.32 (1 H, m). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-ethyl-N,N-diisopropylamine; In N,N-dimethyl acetamide; at 80℃;Sealed tube; | Stepl[00186j To a solution of Intermediate 1 (150 mg, 0.73 mmol) in DMA (0.5 mL) was added <strong>[31775-67-4](±)-<strong>[31775-67-4]trans-2-aminocyclopentanol hydrochloride</strong></strong> (111 mg, 0.80 mmol) and iPr2NEt(0.286 mL, 1.61 mmol), the reaction vessel was sealed and heated to 80 C overnight.The reaction was diluted with ethyl acetate, washed with brine, dried and concentrated to give Intermediate 18 as the crude product (yield not determined). LC retention time 1.28 mm [L]. MS(E) m/z: 270 (MHj. |
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