1H-imidazole-2-carbaldehyde → HCID 9936460, compound

HRID 351162Notes

Reaction equation

HRID 351162 reaction equation
C(OC([N:8]([CH2:28][C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][N:30]=1)[CH2:9][C:10]1[CH:15]=[CH:14][C:13]([CH2:16][NH:17][CH:18]2[C:27]3[N:26]=[CH:25][CH:24]=[CH:23][C:22]=3[CH2:21][CH2:20][CH2:19]2)=[CH:12][CH:11]=1)=O)(C)(C)C.[NH:35]1[CH:39]=[CH:38][N:37]=[C:36]1[CH:40]=O.C([BH3-])#N.[Na+]>CO>[N:30]1[CH:31]=[CH:32][CH:33]=[CH:34][C:29]=1[CH2:28][NH:8][CH2:9][C:10]1[CH:11]=[CH:12][C:13]([CH2:16][N:17]([CH2:40][C:36]2[NH:37][CH:38]=[CH:39][N:35]=2)[CH:18]2[C:27]3[N:26]=[CH:25][CH:24]=[CH:23][C:22]=3[CH2:21][CH2:20][CH2:19]2)=[CH:14][CH:15]=1

Participants

5

Reactant 3

HCID 249551H-imidazole-2-carbaldehydeHCID 5003444Sodium cyanoborohydrideHCID 22018600N-(t-butoxycarbonyl)-N-(2-pyridinylmethyl)-N'-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine

Product 1

HCID 9936460HCID 9936460, compoundYield 28.8%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a stirred solution of N-(tert-butoxycarbonyl)-N-(2-pyridinylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (174 mg, 0.38 mmol) in dry MeOH (5 mL) was added 2-imidazolecarboxaldehyde (75 mg, 0.78 mmol) and sodium cyanoborohydride (55 mg, 0.88 mmol) and the mixture was stirred for 40 h. The reaction mixture was concentrated in vacuo and partitioned between CH2Cl2 (30 mL) and aqueous 1 N sodium hydroxide (30 mL). The aqueous layer was washed with CH2Cl2 (2×20 mL) and the combined organic extracts washed with brine (30 mL), dried (MgSO4), filtered and concentrated in vacuo. Purification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH, 95:5) afforded the imidazole derivative (48 mg, 24%) as a clear oil.

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. custompartitioned between CH2Cl2 (30 mL) and aqueous 1 N sodium hydroxide (30 mL)
  3. washThe aqueous layer was washed with CH2Cl2 (2×20 mL)
  4. washthe combined organic extracts washed with brine (30 mL)
  5. dry with materialdried (MgSO4)
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customPurification of the crude product by column chromatography on silica gel (CH2Cl2/MeOH, 95:5)

Sources & evidence

ORD record
ord-a2f5f9e0338c4750bec83241f00059ba
Source dataset
uspto-grants-2007_02
Patent number
US07183273B2

Reaction notes

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