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Chemical Structure| 162046-56-2 Chemical Structure| 162046-56-2

Structure of 162046-56-2

Chemical Structure| 162046-56-2

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Product Details of [ 162046-56-2 ]

CAS No. :162046-56-2
Formula : C17H23NO5
M.W : 321.37
SMILES Code : O=C(O)C1=CC=C(OC2CCN(C(OC(C)(C)C)=O)CC2)C=C1
MDL No. :MFCD06658985

Safety of [ 162046-56-2 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Application In Synthesis of [ 162046-56-2 ]

* 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 [ 162046-56-2 ]

[ 162046-56-2 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 210962-44-0 ]
  • [ 162046-56-2 ]
YieldReaction ConditionsOperation in experiment
94.6% With methanol; lithium hydroxide; In tetrahydrofuran; at 60℃; for 2.0h; Step 2 To a solution of tent-butyl 4-(4-ethoxycarbonylphenoxy)piperidine-1-carboxylate (XIV)(5.4 g, 15.45 mmol)in MeOH (10 mL)and THF (10 mL)was added LiOH (15.5 mL, 61.82 mmol)and the mixture stirred at 60 C. for 2 h. The mixture was concentrated and the residue triturated with water. The resulting solution was acidified with 2 N HCl until a solid precipitated. The solid was filtered and washed with water to afford 4[(1-tert-butoxycarbonyl-4-piperidyl)oxy]benzoic acid (XV)(4.7 g, 14.63 mmol, 94.6% yield)as a white solid. 1H NMR (499 MHz, DMSO-d6)δ ppm 1.40 (9H, s), 1.47-1.57 (2H, m), 1.89-1.97 (2H, m), 3.12-3.23 (2H, m), 3.63-3.70 (2H, m), 4.63-4.71 (1H, m), 7.04 (2H, d, J=9.06 Hz), 7.87 (2H, d, J=9.06 Hz); ESIMS found for C17H23NO5 m/z 344.1 (M+Na).
94.6% With methanol; lithium hydroxide; In tetrahydrofuran; at 60℃; for 2.0h; To a solution of <strong>[210962-44-0]tert-butyl 4-(4-ethoxycarbonylphenoxy)piperidine-1-carboxylate</strong> (CXII) (5.4 g, 15.45 mmol) in MeOH (10 mL) and THF (10 mL) was added LiOH (15.5 mL, 61.82 mmol) and the mixture stirred at 60 C. for 2 h. The mixture was concentrated, and the residue triturated with water. The resulting solution was acidified with 2 N HCl until a solid precipitated. The solid was filtered and washed with water to afford 4-[(1-tert-butoxycarbonyl-4-piperidyl)oxy]benzoic acid (CXIII) (4.7 g, 14.63 mmol, 94.6% yield) as a white solid. 1H NMR (499 MHz, DMSO-d6) δ ppm 1.40 (9H, s), 1.47-1.57 (2H, m), 1.89-1.97 (2H, m), 3.12-3.23 (2H, m), 3.63-3.70 (2H, m), 4.63-4.71 (1H, m), 7.04 (2H, d, J=9.06 Hz), 7.87 (2H, d, J=9.06 Hz); ESIMS found for C17H23NO5 m/z 344.1 (M+Na).
94.6% With methanol; lithium hydroxide; In tetrahydrofuran; at 60℃; for 2.0h; To a solution of <strong>[210962-44-0]tert-butyl 4-(4-ethoxycarbonylphenoxy)piperidine-1-carboxylate</strong> (XXXVII) (5.4 g, 15.45 mmol) in MeOH (10 mL) and THF (10 mL) was added LiOH (15.5 mL, 61.82 mmol) and the mixture stirred at 60 C. for 2 h. The mixture was concentrated and the residue triturated with water. The resulting solution was acidified with 2 N HCl until a solid precipitated. The solid was filtered and washed with water to afford 4-[(1-tert-butoxycarbonyl-4-piperidyl)oxy]benzoic acid (XXXVIII) (4.7 g, 14.63 mmol, 94.6% yield) as a white solid. 1H NMR (499 MHz, DMSO-d6) δ ppm 1.40 (9H, s), 1.47-1.57 (2H, m), 1.89-1.97 (2H, m), 3.12-3.23 (2H, m), 3.63-3.70 (2H, m), 4.63-4.71 (1H, m), 7.04 (2H, d, J=9.06 Hz), 7.87 (2H, d, J=9.06 Hz); ESIMS found for C17H23NO5 m/z 344.1 (M+Na).
With sodium hydroxide; In ethanol; ethyl acetate; Step 2 Synthesis of 4-(1-t-butoxycarbonyl-4-piperidyloxy)benzoic acid: 847 mg (2.43 mmol) of ethyl 4-(1-t-butoxycarbonyl-4-piperidyloxy)benzoate was dissolved in 50 ml of ethanol. 5 ml of 1 N sodium hydroxide solution was added to the obtained solution, and they were stirred at room temperature for 3 days. The reaction solution was concentrated and then treated with ethyl acetate as the extraction solvent in an ordinary manner to obtain the title compound. Yield: 697 mg (2.2 mmol) (92%) H-NMR (CDCl3) d δ 1.50 (9H, s), 1.70-2.00 (4H, m), 3.30-3.40 (2H, m), 3.65-3.75 (2H, m), 4.60 (1H, s), 6.95 (2H, d), 8.05 (2H, d)
With sodium hydroxide; In ethanol; ethyl acetate; Step 2 Synthesis of 4-(1-t-butoxycarbonyl-4-piperidyloxy)benzoic acid: 847 mg (2.43 mmol) of ethyl 4-(1-t-butoxycarbonyl-4-piperidyloxy)benzoate was dissolved in 50 ml of ethanol, and 5 ml of 1 N sodium hydroxide was added thereto, and they were stirred for 3 days. The reaction solution was concentrated and treated in an ordinary manner with ethyl acetate as the extractant to obtain the title compound. Yield: 697 mg (2.2 mmol) (92 %) 1 H-NMR (CDCl 3) δ: 1.50 (9H, s), 1.70-2.00 (4H, m), 3.30.3.40 (2H, m), 3.65-3.75 (2H, m), 4.60 (1H, s), 6.95 (2H, d), 8.05 (2H, d)

 

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