1-[Bis(4-chlorophenyl)methyl]piperazine → N-cyclopropyl-6-[4-[bis(4-chlorophenyl)methyl]-1-piperazinyl]hexanesulfonamide

HRID 565749Notes

Reaction equation

HRID 565749 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([C:15]2[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][CH:16]=2)[N:9]2[CH2:14][CH2:13][NH:12][CH2:11][CH2:10]2)=[CH:4][CH:3]=1.[CH:22]1([NH:25][S:26]([CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34]Cl)(=[O:28])=[O:27])[CH2:24][CH2:23]1>C(N(C(C)C)C(C)C)C>[CH:22]1([NH:25][S:26]([CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][N:12]2[CH2:11][CH2:10][N:9]([CH:8]([C:5]3[CH:4]=[CH:3][C:2]([Cl:1])=[CH:7][CH:6]=3)[C:15]3[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][CH:16]=3)[CH2:14][CH2:13]2)(=[O:28])=[O:27])[CH2:24][CH2:23]1

Participants

4

Reactant 2

HCID 2855101-[Bis(4-chlorophenyl)methyl]piperazineHCID 11010063N-cyclopropyl-6-chlorohexanesulfonamide

Product 1

HCID 15895710N-cyclopropyl-6-[4-[bis(4-chlorophenyl)methyl]-1-piperazinyl]hexanesulfonamideYield 90%

Reagents, catalysts & solvents 1

HCID 81531DiisopropylethylamineSolvent

Procedure

1-[Bis(4-chlorophenyl)methyl]piperazine (10.00 g, 31.13 mmol) and N-cyclopropyl-6-chlorohexanesulfonamide (8.30 g, 34.63 mmol) were refluxed in N-ethyldiisopropylamine (50 ml) for 7 hours. The reaction mixture was concentrated in vacuo, and water was added thereto. The mixture was extracted with chloroform. The chloroform layer was washed with water, and dried over anhydrous magnesium sulfate. Subsequently, the solvent was removed by evaporation in vacuo. The resulting crude product was purified by column chromatography on silica gel with chloroform-methanol (20:1), to give N-cyclopropyl-6-[4-[bis(4-chlorophenyl)methyl]-1-piperazinyl]hexanesulfonamide (14.70 g) as an oil (yield based on 1-[bis(4-chlorophenyl)methyl]piperazine: 95.3%).

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo, and water
  2. additionwas added
  3. extractionThe mixture was extracted with chloroform
  4. washThe chloroform layer was washed with water
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customSubsequently, the solvent was removed by evaporation in vacuo
  7. customThe resulting crude product was purified by column chromatography on silica gel with chloroform-methanol (20:1)
  8. customto give

Sources & evidence

ORD record
ord-f37c400560f346ac95f579abbcb1d75f
Source dataset
uspto-grants-2001_01
Patent number
US06172228B2

Reaction notes

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