2,3-Dichloropyrazine → HCID 10269934, compound

HRID 1351503Notes

Reaction equation

HRID 1351503 reaction equation
[NH2:1][CH2:2][CH:3]1[CH2:8][CH2:7][N:6]([C:9]([O:11][CH2:12][C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)=[O:10])[CH2:5][CH2:4]1.[Cl:19][C:20]1[C:25](Cl)=[N:24][CH:23]=[CH:22][N:21]=1>>[CH2:12]([O:11][C:9]([N:6]1[CH2:7][CH2:8][CH:3]([CH2:2][NH:1][C:25]2[C:20]([Cl:19])=[N:21][CH:22]=[CH:23][N:24]=2)[CH2:4][CH2:5]1)=[O:10])[C:13]1[CH:14]=[CH:15][CH:16]=[CH:17][CH:18]=1

Participants

3

Reactant 2

HCID 785752,3-DichloropyrazineHCID 219554994-Aminomethyl-1-N-Cbz-piperidine

Product 1

HCID 10269934HCID 10269934, compound

Conditions

Temperature
100 °C

Procedure

A mixture of benzyl 4-(aminomethyl)piperidine-1-carboxylate (EXAMPLE 13, Step 1) (1.25 g, 5.04 mmol) and 2,3-dichloropyrazine (0.25 g) was heated to 100° C. for 1 h. The reaction mixture was cooled and partitioned between EtOAc and pH5.2 citrate buffer. The organic layer was washed with brine, dried over anhydrous sodium sulfate, and the solvent evaporated to give a crude product. Purification by flash column chromatography (5–50% EtOAc hexane) afforded the title compound. M.S (M+1): 361.

Workup

  1. temperatureThe reaction mixture was cooled
  2. custompartitioned between EtOAc and pH5.2 citrate buffer
  3. washThe organic layer was washed with brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. customthe solvent evaporated
  6. customto give a crude product
  7. customPurification by flash column chromatography (5–50% EtOAc hexane)

Sources & evidence

ORD record
ord-c7e3e70681f8489cb89f7cce661327ec
Source dataset
uspto-grants-2007_05
Patent number
US07217716B2

Reaction notes

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