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Dimethylformamide → 2-Tert-butoxy-6-(2-(4-(2-chlorophenoxymethyl)piperidino)ethyl)pyrazine

HRID 890086
Notes
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Reaction equation

HRID 890086 reaction equation
[C:1]([O:5][C:6]1[CH:11]=[N:10][CH:9]=[C:8]([CH:12]=[CH2:13])[N:7]=1)([CH3:4])([CH3:3])[CH3:2].Cl.[Cl:15][C:16]1[CH:29]=[CH:28][CH:27]=[CH:26][C:17]=1[O:18][CH2:19][CH:20]1[CH2:25][CH2:24][NH:23][CH2:22][CH2:21]1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>C(OCC)(=O)C>[C:1]([O:5][C:6]1[CH:11]=[N:10][CH:9]=[C:8]([CH2:12][CH2:13][N:23]2[CH2:22][CH2:21][CH:20]([CH2:19][O:18][C:17]3[CH:26]=[CH:27][CH:28]=[CH:29][C:16]=3[Cl:15])[CH2:25][CH2:24]2)[N:7]=1)([CH3:4])([CH3:3])[CH3:2]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 171780424-[(2-Chlorophenoxy)methyl]piperidine hydrochlorideHCID 222482762-Tert-butoxy-6-vinylpyrazine

Product 1

HCID 222483772-Tert-butoxy-6-(2-(4-(2-chlorophenoxymethyl)piperidino)ethyl)pyrazineYield 11%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
100 °C

Procedure

After adding 1.16 g of 2-tert-butoxy-6-vinylpyrazine, 860 mg of 4-(2-chlorophenoxymethyl)piperidine hydrochloride and 0.43 g of anhydrous potassium carbonate to 10 ml of N,N-dimethylformamide, the mixture was stirred for 2 days at 100° C. Ice water was added to the reaction mixture and extraction was performed with ethyl acetate. The organic layer was washed with water and saturated brine in that order and dried over anhydrous magnesium sulfate, and then the solvent was distilled off under reduced pressure. The residue was purified by NH silica gel column chromatography (solvent: n-hexane/ethyl acetate) to obtain the title compound (145 mg, 11% yield).

Workup

  1. washThe organic layer was washed with water and saturated brine in that order
  2. dry with materialdried over anhydrous magnesium sulfate
  3. distillationthe solvent was distilled off under reduced pressure
  4. customThe residue was purified by NH silica gel column chromatography (solvent: n-hexane/ethyl acetate)

Sources & evidence

ORD record
ord-d98bc58d5cd5442c9dfbbe2e5d20e0af
Source dataset
uspto-grants-2006_02
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06995144B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes