Triethylamine → Methyl 4-chloro-2-[(2,4-dichlorophenyl)amino]-1-(3-hydroxypropyl)-1H-benzimidazole-7-carboxylate

HRID 1398838Notes

Reaction equation

HRID 1398838 reaction equation
[Cl:1][C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[C:4]([NH:12][CH2:13][CH2:14][CH2:15][OH:16])[C:3]=1[NH:17][C:18](=S)[NH:19][C:20]1[CH:25]=[CH:24][C:23]([Cl:26])=[CH:22][C:21]=1[Cl:27].Cl.C(N=C=NCCCN(C)C)C.C(N(CC)CC)C>O1CCCC1>[Cl:1][C:2]1[C:3]2[N:17]=[C:18]([NH:19][C:20]3[CH:25]=[CH:24][C:23]([Cl:26])=[CH:22][C:21]=3[Cl:27])[N:12]([CH2:13][CH2:14][CH2:15][OH:16])[C:4]=2[C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:10][CH:11]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 86632879Methyl 4-chloro-3-{[(2,4-dichlorophenyl)carbamothioyl]amino}-2-[(3-hydroxypropyl)amino]benzoate

Product 1

HCID 68762786Methyl 4-chloro-2-[(2,4-dichlorophenyl)amino]-1-(3-hydroxypropyl)-1H-benzimidazole-7-carboxylateYield 84.8%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
50 °C

Procedure

A mixture of the resulting thiourea (19.6 g), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (8.12 g, 42.3 mmol), and triethylamine (6.5 mL) in tetrahydrofuran (200 mL) was stirred at 50° C. for 3 hr. The mixture was concentrated in vacuo, diluted with saturated aqueous sodium hydrogen carbonate, and extracted with ethyl acetate. The combined organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The residue was washed with diisopropyl ether to give the title compound as a colorless powder (15.4 g, 35.9 mmol, 71% in 2 steps).

Workup

  1. concentrationThe mixture was concentrated in vacuo
  2. additiondiluted with saturated aqueous sodium hydrogen carbonate
  3. extractionextracted with ethyl acetate
  4. washThe combined organic layer was washed with brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. washThe residue was washed with diisopropyl ether

Sources & evidence

ORD record
ord-6fdf9ac5348745ebbd07093dd8ea182e
Source dataset
uspto-grants-2014_12
Patent number
US08901141B2

Reaction notes

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