Water → N-(1-Benzyl-4-piperidyl)-4-(N-acetyl-N-methylamino)benzenesulfonamide

HRID 1377021Notes

Reaction equation

HRID 1377021 reaction equation
[NH2:1][CH:2]1[CH2:7][CH2:6][N:5]([CH2:8][C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)[CH2:4][CH2:3]1.[C:15]([N:18]([C:20]1[CH:25]=[CH:24][C:23]([S:26](Cl)(=[O:28])=[O:27])=[CH:22][CH:21]=1)[CH3:19])(=[O:17])[CH3:16].C([O-])(=O)C.[Na+].O>C(O)C>[CH2:8]([N:5]1[CH2:6][CH2:7][CH:2]([NH:1][S:26]([C:23]2[CH:22]=[CH:21][C:20]([N:18]([C:15](=[O:17])[CH3:16])[CH3:19])=[CH:25][CH:24]=2)(=[O:28])=[O:27])[CH2:3][CH2:4]1)[C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1

Participants

6

Reactant 4

HCID 962WaterHCID 2931464-(N-methylacetamido)benzene-1-sulfonyl chlorideHCID 4158521-Benzyl-4-piperidylamineHCID 517045Sodium Acetate

Product 1

HCID 15049722N-(1-Benzyl-4-piperidyl)-4-(N-acetyl-N-methylamino)benzenesulfonamide

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

4-Amino-1-benzylpiperidine (3.63 ml, 17.8 mmol) was added to a suspension of the 4-(N-acetyl-N-methylamino)benzenesulfonyl chloride (4.00 g, 16.2 mmol) prepared in Preparative Example 12 and sodium acetate (2.65 g) in ethanol (40 ml). The obtained mixture was stirred at room temperature for 4 hours, followed by the addition of water. The obtained mixture was extracted with ethyl acetate. The organic layer was washed with water and a saturated aqueous solution of common salt, dried over magnesium sulfate, and concentrated to give N-(1-benzyl-4-piperidyl)-4-(N-acetyl-N-methylamino)benzenesulfonamide as a colorless viscous oil. This oil was dissolved in 4N aqueous hydrochloric acid and the obtained solution was heated under reflux for 3 hours. The resulting mixture was concentrated to give a solid residue. This residue was recrystallized from ethyl acetate to give the title compound as a white crystal (highly hygroscopic one) (5.80 g, overall yield of two steps: 80%). m.p. (°C.): amorphous (highly hygroscopic)

Workup

  1. extractionThe obtained mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with water
  3. dry with materiala saturated aqueous solution of common salt, dried over magnesium sulfate
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-616a85b0fe6a4d81ad837d09d14af10a
Source dataset
uspto-grants-1997_09
Patent number
US05663414

Reaction notes

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