Cyanogen Bromide → 4-(2-amino-1H-benzimidazol-4-yl)carbonylamino-3-methoxy-N-methyl-N-[4-methyl-2-[5-(4-methylpiperazin-1-yl)carbonylpent-1-yloxy]phenyl]benzamide

HRID 429628Notes

Reaction equation

HRID 429628 reaction equation
[NH2:1][C:2]1[C:44]([NH2:45])=[CH:43][CH:42]=[CH:41][C:3]=1[C:4]([NH:6][C:7]1[CH:38]=[CH:37][C:10]([C:11]([N:13]([CH3:36])[C:14]2[CH:19]=[CH:18][C:17]([CH3:20])=[CH:16][C:15]=2[O:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][C:27]([N:29]2[CH2:34][CH2:33][N:32]([CH3:35])[CH2:31][CH2:30]2)=[O:28])=[O:12])=[CH:9][C:8]=1[O:39][CH3:40])=[O:5].[N:46]#[C:47]Br.C(=O)(O)[O-].[Na+]>O>[NH2:46][C:47]1[NH:45][C:44]2[CH:43]=[CH:42][CH:41]=[C:3]([C:4]([NH:6][C:7]3[CH:38]=[CH:37][C:10]([C:11]([N:13]([CH3:36])[C:14]4[CH:19]=[CH:18][C:17]([CH3:20])=[CH:16][C:15]=4[O:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][C:27]([N:29]4[CH2:34][CH2:33][N:32]([CH3:35])[CH2:31][CH2:30]4)=[O:28])=[O:12])=[CH:9][C:8]=3[O:39][CH3:40])=[O:5])[C:2]=2[N:1]=1

Participants

5

Reactant 3

HCID 10476Cyanogen BromideHCID 516892Sodium BicarbonateHCID 183547944-(2,3-diaminophenyl)carbonylamino-3-methoxy-N-methyl-N-[4-methyl-2-[5-(4-methylpiperazin-1-yl)carbonylpent-1-yloxy]phenyl]benzamide

Product 1

HCID 183549364-(2-amino-1H-benzimidazol-4-yl)carbonylamino-3-methoxy-N-methyl-N-[4-methyl-2-[5-(4-methylpiperazin-1-yl)carbonylpent-1-yloxy]phenyl]benzamideYield 26.6%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To a suspension of 4-(2,3-diaminobenzoyl)amino-3-methoxy-N-methyl-N-[4-methyl-2-[5-(4-methylpiperazin-1-yl)carbonylpent-1-yloxy]phenyl]benzamide (242 mg) in water (3 ml) was added cyanogen bromide (46 mg) at ambient temperature. The mixture was stirred at the same temperature for 2 hours and then allowed to stand at the same temperature overnight. To the reaction mixture was added saturated aqueous sodium bicarbonate solution and the solution was extracted with chloroform. The organic layer was washed with water, dried over magnesium sulfate and evaporated in vacuo. The residue was purified by preparative thin-layer chromatography (chloroform-methanol=10:1) to give 4-(2-amino-1H-benzimidazol-4-yl)carbonylamino-3-methoxy-N-methyl-N-[4-methyl-2-[5-(4-methylpiperazin-1-yl)carbonylpent-1-yloxy]phenyl]benzamide (67 mg) as a powder.

Workup

  1. customto stand at the same temperature overnight
  2. extractionthe solution was extracted with chloroform
  3. washThe organic layer was washed with water
  4. dry with materialdried over magnesium sulfate
  5. customevaporated in vacuo
  6. customThe residue was purified by preparative thin-layer chromatography (chloroform-methanol=10:1)

Sources & evidence

ORD record
ord-6ee39d5f8ba1454eb5f4cb0f726b666c
Source dataset
uspto-grants-2001_11
Patent number
US06316482B1

Reaction notes

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