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Water → HCID 68781134, compound

HRID 2263315
Notes
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Reaction equation

HRID 2263315 reaction equation
Br[C:2]1[S:3][CH:4]=[C:5]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=2[Cl:13])[N:6]=1.[N:14]1([C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])[CH2:19][CH2:18][NH:17][CH2:16][CH2:15]1.C(=O)([O-])[O-].[K+].[K+].O>CN(C)C=O>[Cl:13][C:8]1[CH:9]=[CH:10][CH:11]=[CH:12][C:7]=1[C:5]1[N:6]=[C:2]([N:17]2[CH2:16][CH2:15][N:14]([C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])[CH2:19][CH2:18]2)[S:3][CH:4]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 143452tert-Butyl piperazine-1-carboxylateHCID 68780326HCID 68780326, compound

Product 1

HCID 68781134HCID 68781134, compoundYield 67%

Reagents, catalysts & solvents 1

HCID 6228
Dimethylformamide
Solvent

Procedure

A solution of 2-bromo-4-(2-chlorophenyl)-1,3-thiazole (4.48 g, 16.3 mmol), tert-butyl piperazine-1-carboxylate (6.08 g, 32.6 mmol) and potassium carbonate (2.26 g, 16.3 mmol) in dimethylformamide (50 ml) was stirred at 120° C. for 15 hours. Water was poured to the reaction mixture, and the mixture was 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 (hexane:ethyl acetate=9:1) to give 4.15 g (66.9%) of the desired product as a solid.

Workup

  1. extractionthe mixture was extracted 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 (hexane:ethyl acetate=9:1)

Sources & evidence

ORD record
ord-9e50ca05c612469db7c36858ad3b09b8
Source dataset
uspto-grants-2010_12
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07851473B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes