Triethylamine → ethyl 2-[[(2R)-2-[1-methyl-2-[[4-[N-(4-methylbenzoyl)carbamimidoyl]anilino]methyl]benzimidazol-5-yl]-1-oxo-1-pyrrolidin-1-ylpropan-2-yl]amino]acetate

HRID 1357801Notes

Reaction equation

HRID 1357801 reaction equation
Cl.Cl.[C:3]([C:6]1[CH:11]=[CH:10][C:9]([NH:12][CH2:13][C:14]2[N:18]([CH3:19])[C:17]3[CH:20]=[CH:21][C:22]([C@@:24]([NH:33][CH2:34][C:35]([O:37][CH2:38][CH3:39])=[O:36])([C:26]([N:28]4[CH2:32][CH2:31][CH2:30][CH2:29]4)=[O:27])[CH3:25])=[CH:23][C:16]=3[N:15]=2)=[CH:8][CH:7]=1)(=[NH:5])[NH2:4].C(N(CC)CC)C.[CH3:47][C:48]1[CH:65]=[CH:64][C:51]([C:52](OC2C=CC([N+]([O-])=O)=CC=2)=[O:53])=[CH:50][CH:49]=1>C(Cl)Cl>[CH3:47][C:48]1[CH:65]=[CH:64][C:51]([C:52]([NH:5][C:3]([C:6]2[CH:11]=[CH:10][C:9]([NH:12][CH2:13][C:14]3[N:18]([CH3:19])[C:17]4[CH:20]=[CH:21][C:22]([C@@:24]([NH:33][CH2:34][C:35]([O:37][CH2:38][CH3:39])=[O:36])([C:26]([N:28]5[CH2:32][CH2:31][CH2:30][CH2:29]5)=[O:27])[CH3:25])=[CH:23][C:16]=4[N:15]=3)=[CH:8][CH:7]=2)=[NH:4])=[O:53])=[CH:50][CH:49]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 532509p-Toluic acid, 4-nitrophenyl esterHCID 23381735(r)-2-(4-Amidinophenylaminomethyl)-1-methyl-5-[1-(ethoxycarbonylmethylamino)-1-(pyrrolidinocarbonyl)-ethyl]-benzimidazole-dihydrochloride

Product 1

HCID 145816426ethyl 2-[[(2R)-2-[1-methyl-2-[[4-[N-(4-methylbenzoyl)carbamimidoyl]anilino]methyl]benzimidazol-5-yl]-1-oxo-1-pyrrolidin-1-ylpropan-2-yl]amino]acetate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
50 °C

Procedure

A suspension of 0.7 g (1.2 mmol) of (R)-2-(4-amidinophenylaminomethyl)-1-methyl-5-[1-(ethoxycarbonylmethylamino)-1-(pyrrolidinocarbonyl)-ethyl]-benzimidazole-dihydrochloride in 25 ml of methylene chloride is combined with 4.0 ml (28 mmol) of triethylamine and 0.8 g (3.0 mmol) of 4-nitrophenyl 4-methyl-benzoate and heated to 50° C. for 3.5 hours, whereupon a clear solution is formed. After cooling, it is washed with sodium bicarbonate solution, saline solution and water, dried over magnesium sulphate and concentrated by evaporation. The crude product is purified on silica gel, eluting with ethyl acetate/ethanol (50:1 and 9:1). The uniform fractions are combined, concentrated by evaporation, triturated with ether, suction filtered and dried.

Workup

  1. customis formed
  2. temperatureAfter cooling
  3. washit is washed with sodium bicarbonate solution, saline solution and water
  4. dry with materialdried over magnesium sulphate
  5. concentrationconcentrated by evaporation
  6. customThe crude product is purified on silica gel
  7. washeluting with ethyl acetate/ethanol (50:1 and 9:1)
  8. concentrationconcentrated by evaporation
  9. customtriturated with ether, suction
  10. filtrationfiltered
  11. customdried

Sources & evidence

ORD record
ord-b94f5f00f196485696769696d4db5805
Source dataset
uspto-grants-2003_07
Patent number
US06593355B2

Reaction notes

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