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Water → t-Butyl 4-[4-(5-nitropyridin-2-yloxy)benzyl]piperazine-1-carboxylate

HRID 884149
Notes
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Reaction equation

HRID 884149 reaction equation
Cl[CH2:2][C:3]1[CH:18]=[CH:17][C:6]([O:7][C:8]2[CH:13]=[CH:12][C:11]([N+:14]([O-:16])=[O:15])=[CH:10][N:9]=2)=[CH:5][CH:4]=1.C(N(CC)CC)C.[N:26]1([C:32]([O:34][C:35]([CH3:38])([CH3:37])[CH3:36])=[O:33])[CH2:31][CH2:30][NH:29][CH2:28][CH2:27]1.O>CN(C=O)C>[N+:14]([C:11]1[CH:12]=[CH:13][C:8]([O:7][C:6]2[CH:17]=[CH:18][C:3]([CH2:2][N:29]3[CH2:28][CH2:27][N:26]([C:32]([O:34][C:35]([CH3:38])([CH3:37])[CH3:36])=[O:33])[CH2:31][CH2:30]3)=[CH:4][CH:5]=2)=[N:9][CH:10]=1)([O-:16])=[O:15]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 962WaterHCID 8471TriethylamineHCID 143452tert-Butyl piperazine-1-carboxylateHCID 685261432-(4-Chloromethylphenoxy)-5-nitropyridine

Product 1

HCID 68526806t-Butyl 4-[4-(5-nitropyridin-2-yloxy)benzyl]piperazine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 6228
Dimethylformamide
Solvent

Conditions

Temperature
50 °C

Procedure

To a solution of 2-(4-chloromethylphenoxy)-5-nitropyridine (12.32 g, 47 mmol) in DMF (120 mL) were added triethylamine (19.4 mL, 140 mmol) and t-butyl piperazine-1-carboxylate 11.27 g, 61 mmol), and the resulting solution was stirred for 3 hours at 50° C. Water was added to the residue, and extracted with ethyl acetate. The ethyl acetate layer was washed with water and brine. The ethyl acetate layer was dried over anhydrous magnesium sulfate, and evaporated. The residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=1:1), to thereby yield 11.26 g of the title compound.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with water and brine
  3. dry with materialThe ethyl acetate layer was dried over anhydrous magnesium sulfate
  4. customevaporated
  5. customThe residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=1:1)

Sources & evidence

ORD record
ord-498ce6d889154815b55ad8fdd5e1a1fb
Source dataset
uspto-grants-2012_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08236826B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes