Potassium Carbonate → ethyl 3-(N-[2-[[4-(N-hexoxycarbonylcarbamimidoyl)anilino]methyl]-1-methylbenzimidazole-5-carbonyl]anilino)propanoate

HRID 50295Notes

Reaction equation

HRID 50295 reaction equation
Cl.[C:2]1([N:8]([CH2:32][CH2:33][C:34]([O:36][CH2:37][CH3:38])=[O:35])[C:9]([C:11]2[CH:31]=[CH:30][C:14]3[N:15]([CH3:29])[C:16]([CH2:18][NH:19][C:20]4[CH:25]=[CH:24][C:23]([C:26](=[NH:28])[NH2:27])=[CH:22][CH:21]=4)=[N:17][C:13]=3[CH:12]=2)=[O:10])[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+].Cl[C:46]([O:48][CH2:49][CH2:50][CH2:51][CH2:52][CH2:53][CH3:54])=[O:47]>O1CCCC1.O>[C:2]1([N:8]([CH2:32][CH2:33][C:34]([O:36][CH2:37][CH3:38])=[O:35])[C:9]([C:11]2[CH:31]=[CH:30][C:14]3[N:15]([CH3:29])[C:16]([CH2:18][NH:19][C:20]4[CH:25]=[CH:24][C:23]([C:26](=[NH:27])[NH:28][C:46]([O:48][CH2:49][CH2:50][CH2:51][CH2:52][CH2:53][CH3:54])=[O:47])=[CH:22][CH:21]=4)=[N:17][C:13]=3[CH:12]=2)=[O:10])[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 22466Hexyl chloroformateHCID 184125531-Methyl-2-[N-(4-amidinophenyl)-aminomethyl]-benzimidazol-5-yl-carboxylicacid-N-phenyl-N-(2-ethoxycarbonylethyl)-amide-hydrochloride

Product 1

HCID 140409601ethyl 3-(N-[2-[[4-(N-hexoxycarbonylcarbamimidoyl)anilino]methyl]-1-methylbenzimidazole-5-carbonyl]anilino)propanoateYield 78%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

1.1 g (2.06 mmol) of 1-methyl-2-[N-(4-amidinophenyl)aminomethyl]benzimidazol-5-yl-carboxylic acid-N-phenyl-N-(2-ethoxycarbonylethyl)amide hydrochloride was dissolved in a mixture of 40 mL of tetrahydrofuran and 10 mL of water, then 570 mg (4.12 mmol) of potassium carbonate and 362 mg (2.2 mmol) of n-hexyl chloroformate were added and stirred for two hours at room temperature. The solvent was then distilled off, the residue was mixed with about 50 mL of saturated saline solution and the resulting solution was extracted three times with 20 mL of dichloromethane. The extracts were dried over sodium sulfate and evaporated down. The crude product thus obtained was purified by column chromatography (100 g silica gel; dichloromethane+5% ethanol). Yield: 78% of theory, C35H42N6O5 (626.8); Rf value: 0.49 (silica gel; dichloromethane/ethanol=19:1); EKA mass spectrum: (M+H)+=627; (M+H+Na)++=325; (M+2H)++=314.

Workup

  1. distillationThe solvent was then distilled off
  2. additionthe residue was mixed with about 50 mL of saturated saline solution
  3. extractionthe resulting solution was extracted three times with 20 mL of dichloromethane
  4. dry with materialThe extracts were dried over sodium sulfate
  5. customevaporated down

Sources & evidence

ORD record
ord-7ae54349095244b6ad268c6a8173aca5
Source dataset
uspto-grants-2004_03
Patent number
US06710055B2

Reaction notes

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