Ethanol → 3-[4-(4-Chlorobenzyl)homopiperazin-1-yl]-propanethiol

HRID 3845

Reaction equation

HRID 3845 reaction equation
NC(N)=[S:3].[Cl:5][C:6]1[CH:23]=[CH:22][C:9]([CH2:10][N:11]2[CH2:17][CH2:16][CH2:15][N:14]([CH2:18][CH2:19][CH2:20]Cl)[CH2:13][CH2:12]2)=[CH:8][CH:7]=1.C(O)C.[OH-].[Na+]>O>[Cl:5][C:6]1[CH:23]=[CH:22][C:9]([CH2:10][N:11]2[CH2:17][CH2:16][CH2:15][N:14]([CH2:18][CH2:19][CH2:20][SH:3])[CH2:13][CH2:12]2)=[CH:8][CH:7]=1

Participants

6

Reactant 4

HCID 702EthanolHCID 14798Sodium HydroxideHCID 2723790ThioureaHCID 201531881-(4-Chlorobenzyl)-4-(3-chloropropyl)homopiperazine

Product 1

HCID 201531743-[4-(4-Chlorobenzyl)homopiperazin-1-yl]-propanethiolYield 39.1%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

4.1 g of thiourea were added to a mixture of 8.0 g of 1-(4-chlorobenzyl)-4-(3-chloropropyl)homopiperazine and 100 ml of reagent ethanol. The mixture was refluxed for 6 hours and then stirred overnight at room temperature. A solution of 5.0 g of sodium hydroxide in 30 ml of water was added, and the resulting solution was refluxed for 4 hours. The ethanol was removed in vacuo, and water was added to the residue. The product was extracted with methylene chloride, and the extract was dried (sodium sulfate) and concentrated to give 3.1 g (39% of theory) of 3-[4-(4-chlorobenzyl)homopiperazin-1-yl]propanethiol as a yellow oil.

Workup

  1. temperatureThe mixture was refluxed for 6 hours
  2. temperaturethe resulting solution was refluxed for 4 hours
  3. customThe ethanol was removed in vacuo, and water
  4. additionwas added to the residue
  5. extractionThe product was extracted with methylene chloride
  6. dry with materialthe extract was dried (sodium sulfate)
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-73e545c91cc447a8af0c692a3811aa45
Source dataset
uspto-grants-1988_02
Patent number
US04722926

Linked notes

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