Water → N-Pyridin-3-yl-4-[3-(3-thienyl)phenyl]piperazine-1-carboxamide

HRID 1158721Notes

Reaction equation

HRID 1158721 reaction equation
[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([NH:7][C:8](=[O:15])OCC(Cl)(Cl)Cl)[CH:2]=1.[S:16]1[CH:20]=[CH:19][C:18]([C:21]2[CH:22]=[C:23]([N:27]3[CH2:32][CH2:31][NH:30][CH2:29][CH2:28]3)[CH:24]=[CH:25][CH:26]=2)=[CH:17]1.C(N(C(C)C)CC)(C)C.O>CS(C)=O>[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([NH:7][C:8]([N:30]2[CH2:31][CH2:32][N:27]([C:23]3[CH:24]=[CH:25][CH:26]=[C:21]([C:18]4[CH:19]=[CH:20][S:16][CH:17]=4)[CH:22]=3)[CH2:28][CH2:29]2)=[O:15])[CH:2]=1

Participants

6

Reactant 4

HCID 962WaterHCID 81531DiisopropylethylamineHCID 589851401-[3-(3-Thienyl)phenyl]piperazineHCID 68575380HCID 68575380, compound

Product 1

HCID 16114127N-Pyridin-3-yl-4-[3-(3-thienyl)phenyl]piperazine-1-carboxamideYield 37.4%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

A mixed solution of 2,2,2-trichloroethyl pyridin-3-ylcarbamate (303 mg, 1.13 mmol), 1-[3-(3-thienyl)phenyl]piperazine (250 mg, 1.02 mmol) and diisopropylethylamine (0.356 ml, 2.05 mmol) in dimethylsulfoxide (3.5 ml) was stirred at 70° C. for 3 days. Water was poured into the reaction solution, and extracted with ethyl acetate. The extract was washed with water, dried over anhydrous magnesium sulfate, and the solvent was distilled away under reduce pressure. The residue was purified by silica gel column chromatography (ethyl acetate), and recrystallized from a mixed solvent of hexane and tetrahydrofuran to give the titled compound 139 mg (37.3%) as solid product.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe extract was washed with water
  3. dry with materialdried over anhydrous magnesium sulfate
  4. distillationthe solvent was distilled away
  5. customThe residue was purified by silica gel column chromatography (ethyl acetate)
  6. customrecrystallized from a mixed solvent of hexane and tetrahydrofuran

Sources & evidence

ORD record
ord-a0e2c83ccadb4bdf9c927cdbe862ecf0
Source dataset
uspto-grants-2010_10
Patent number
US07812025B2

Reaction notes

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