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Chemical Structure| 158414-69-8 Chemical Structure| 158414-69-8

Structure of 158414-69-8

Chemical Structure| 158414-69-8

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Product Details of [ 158414-69-8 ]

CAS No. :158414-69-8
Formula : C7H11NO3
M.W : 157.17
SMILES Code : O=C([C@H](CCC1)NC1=O)OC

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Application In Synthesis of [ 158414-69-8 ]

* 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.

  • Downstream synthetic route of [ 158414-69-8 ]

[ 158414-69-8 ] Synthesis Path-Downstream   1~2

  • 2
  • [ 67-56-1 ]
  • [ 34622-39-4 ]
  • [ 158414-69-8 ]
YieldReaction ConditionsOperation in experiment
70% With thionyl chloride; triethylamine; at 0 - 20℃; Methyl (2S)-6-oxopiperidine-2-carboxylate (Enantiomer) To an initial charge of methanol (15 ml) at 0 C. were added thionyl dichloride (560 mul, 7.7 mmol) and then, in portions, <strong>[34622-39-4](2S)-6-oxopiperidine-2-carboxylic acid</strong> (1.00 g, 6.99 mmol). After stirring at room temperature overnight, the solvent was removed under reduced pressure, and the residue was admixed with toluene and triethylamine (1.9 ml, 14 mmol). The mixture was stirred at room temperature for 30 minutes, then filtered, and the filtrate was concentrated. 805 mg (70% of theory) of the title compound were obtained. LC-MS (Method 4): Rt=0.26 min; MS (ESIpos): m/z=158 [M+H]+ 1H-NMR (400 MHz, DMSO-d6) delta[ppm]: -0.008 (1.70), 0.008 (1.69), 1.541 (0.78), 1.550 (1.05), 1.560 (1.24), 1.566 (1.90), 1.575 (2.78), 1.584 (3.48), 1.591 (3.19), 1.594 (3.57), 1.600 (4.36), 1.610 (3.31), 1.619 (4.16), 1.628 (3.71), 1.636 (3.43), 1.644 (5.02), 1.652 (4.23), 1.660 (4.33), 1.668 (4.60), 1.676 (2.96), 1.684 (2.78), 1.693 (1.99), 1.702 (1.75), 1.708 (1.01), 1.717 (0.85), 1.745 (1.91), 1.754 (2.09), 1.759 (2.49), 1.768 (2.39), 1.778 (3.46), 1.787 (3.35), 1.793 (3.60), 1.802 (3.22), 1.810 (2.52), 1.819 (1.83), 1.901 (2.92), 1.910 (3.42), 1.916 (3.20), 1.925 (4.72), 1.935 (4.50), 1.941 (3.46), 1.949 (4.49), 1.959 (3.35), 1.968 (1.78), 1.974 (1.91), 1.983 (1.62), 2.097 (0.90), 2.113 (0.85), 2.128 (11.31), 2.141 (16.00), 2.148 (10.19), 2.156 (7.22), 2.164 (7.72), 2.188 (0.61), 2.192 (0.69), 2.208 (0.70), 2.289 (0.72), 2.306 (1.34), 2.324 (0.85), 2.523 (0.72), 3.168 (4.31), 3.311 (4.19), 3.409 (0.45), 3.480 (0.73), 3.581 (8.47), 3.635 (7.91), 3.849 (0.72), 4.049 (4.37), 4.055 (4.73), 4.063 (8.78), 4.069 (8.78), 4.077 (4.66), 4.083 (4.33), 7.542 (6.15).
46% With thionyl chloride; at 0 - 20℃; [0870] Thionyl chloride (8.3 g, 69.77 mmol, 10.00 equiv) was added to a solution of (25)-6- oxopiperidine-2-carboxylic acid (1 g, 6.986 mmol, 1.000 equiv) in methanol (20 mL) dropwise at 0C. The resulting solution was stirred overnight at room temperature and concentrated under vacuum. The pH value of the solution was adjusted to 8 with saturated sodium bicarbonate. The mixture was extracted with 3x50 mL of ethyl acetate, dried over anhydrous sodium sulfate, and concentrated under vacuum. This resulted in the title compound (0.5 g ,46%) as colorless oil. LCMS [M+H] 158.
With thionyl chloride; at 20℃;Inert atmosphere; (b) (S)-6-Hydroxymethyl-piperidin-2-one To a solution of <strong>[34622-39-4](S)-6-oxopiperidine-2-carboxylic acid</strong> (17 g, 120 mmol) in methanol (200 mL) was added thionyl chloride (87 mL, 1.2 mol) and the reaction mixture was stirred at RT overnight, concentrated, combined with the product of a similar preparation, washed with saturated aqueous NaHCO3, and extracted with EtOAc (4*200 mL). The organic layers were combined, dried over sodium sulfate and evaporated to provide crude (S)-methyl 6-oxopiperidine-2-carboxylate (36.5 g).
 

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