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Water → 4-[4-(3-chlorophenyl)-1,3-thiazol-2-yl]-N-pyridin-3-ylpiperazine-1-carboxamide

HRID 2263275
Notes
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Reaction equation

HRID 2263275 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.[Cl:16][C:17]1[CH:18]=[C:19]([C:23]2[N:24]=[C:25]([N:28]3[CH2:33][CH2:32][NH:31][CH2:30][CH2:29]3)[S:26][CH:27]=2)[CH:20]=[CH:21][CH:22]=1.C(N(C(C)C)CC)(C)C.O>CS(C)=O>[Cl:16][C:17]1[CH:18]=[C:19]([C:23]2[N:24]=[C:25]([N:28]3[CH2:29][CH2:30][N:31]([C:8]([NH:7][C:3]4[CH:2]=[N:1][CH:6]=[CH:5][CH:4]=4)=[O:15])[CH2:32][CH2:33]3)[S:26][CH:27]=2)[CH:20]=[CH:21][CH:22]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 962WaterHCID 81531DiisopropylethylamineHCID 617805201-[4-(3-Chlorophenyl)-1,3-thiazol-2-yl]piperazineHCID 685753802,2,2-Trichloroethyl pyridin-3-ylcarbamate

Product 1

HCID 687800004-[4-(3-chlorophenyl)-1,3-thiazol-2-yl]-N-pyridin-3-ylpiperazine-1-carboxamideYield 39.7%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Conditions

Temperature
70 °C

Procedure

A mixture of 2,2,2-trichloroethyl pyridin-3-ylcarbamate (212 mg, 0.786 mmol), 1-[4-(3-chlorophenyl)-1,3-thiazol-2-yl]piperazine (200 mg, 0.715 mmol) and diisopropylethylamine (0.249 ml, 1.43 mmol) in dimethyl sulfoxide (2.5 ml) was stirred at 70° C. for 15 hours. Water was poured to the reaction mixture, and extracted with ethyl acetate. The extract was washed with water, and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate), and recrystallized from a mixed solvent of hexane and tetrahydrofuran to give 113 mg (39.7%) of the desired product as a solid.

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 off under reduced pressure
  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-5136ee9aa029432aa8fd680ede1c8776
Source dataset
uspto-grants-2010_12
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07851473B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes