Acetic Acid → [4-(6-{[bis(1H-imidazol-2-ylmethyl)amino]methyl}-1-propyl-1H-benzimidazol-2-yl)butyl]dipropylamine

HRID 1174015Notes

Reaction equation

HRID 1174015 reaction equation
[NH:1]1[CH:5]=[CH:4][N:3]=[C:2]1[CH2:6][NH:7][CH2:8][C:9]1[CH:10]=[CH:11][C:12]2[N:16]=[C:15]([CH2:17][CH2:18][CH2:19][CH2:20][N:21]([CH2:25][CH2:26][CH3:27])[CH2:22][CH2:23][CH3:24])[N:14]([CH2:28][CH2:29][CH3:30])[C:13]=2[CH:31]=1.C(O)(=O)C.C[N:37]1[CH:41]=[CH:40][N:39]=[C:38]1[CH:42]=O.C([BH3-])#N.[Na+]>CO>[NH:3]1[CH:4]=[CH:5][N:1]=[C:2]1[CH2:6][N:7]([CH2:8][C:9]1[CH:10]=[CH:11][C:12]2[N:16]=[C:15]([CH2:17][CH2:18][CH2:19][CH2:20][N:21]([CH2:22][CH2:23][CH3:24])[CH2:25][CH2:26][CH3:27])[N:14]([CH2:28][CH2:29][CH3:30])[C:13]=2[CH:31]=1)[CH2:42][C:38]1[NH:37][CH:41]=[CH:40][N:39]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 1395751-Methyl-2-imidazolecarboxaldehydeHCID 5003444Sodium cyanoborohydrideHCID 23155443[4-(6-{[(1H-imidazol-2-ylmethyl)amino]methyl}-1-propyl-1H-benzimidazol-2-yl)butyl]dipropylamine

Product 1

HCID 11577013[4-(6-{[bis(1H-imidazol-2-ylmethyl)amino]methyl}-1-propyl-1H-benzimidazol-2-yl)butyl]dipropylamine

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
0 °C

Procedure

The compound (64.0 mg) obtained in Example 126-1 was dissolved in methanol (1.3 ml) and added with acetic acid (0.065 ml) and 1-methyl-2-imidazole carboxaldehyde (16.6 mg), followed by cooling to 0° C. Then, the solution was added with sodium cyanoborohydride (14.2 mg) and stirred at room temperature for 2 days. After completion of the reaction, the solvent was distilled off under reduced pressure and the residue was then dissolved in chloroform. After washing with a 1 mol/l sodium hydroxide aqueous solution, the solution was subjected to extraction with chloroform. The organic layer was washed with saturated saline solution and dried with anhydrous sodium sulfate. After filtration, the solvent was distilled off under reduced pressure. Subsequently, the residue was purified through silica gel column chromatography (chloroform/methanol) and treated with hydrochloric acid, thereby obtaining hydrochloride (30.0 mg) of the subject compound as a white solid.

Workup

  1. customAfter completion of the reaction
  2. distillationthe solvent was distilled off under reduced pressure
  3. dissolutionthe residue was then dissolved in chloroform
  4. washAfter washing with a 1 mol/l sodium hydroxide aqueous solution
  5. extractionthe solution was subjected to extraction with chloroform
  6. washThe organic layer was washed with saturated saline solution
  7. dry with materialdried with anhydrous sodium sulfate
  8. filtrationAfter filtration
  9. distillationthe solvent was distilled off under reduced pressure
  10. customSubsequently, the residue was purified through silica gel column chromatography (chloroform/methanol)
  11. additiontreated with hydrochloric acid

Sources & evidence

ORD record
ord-4d031bfdae164b83a50b2e79331bb421
Source dataset
uspto-grants-2010_11
Patent number
US07833991B2

Reaction notes

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