1-Hydroxybenzotriazole → Methyl cis(+/-)-2-(4-{[(4-chloro-5-ethyl-1H-imidazol-2-yl)carbonyl]amino}-3-methoxypiperidin-1-yl)-1H-benzimidazole-4-carboxylate

HRID 43812Notes

Reaction equation

HRID 43812 reaction equation
[NH2:1][C@H:2]1[CH2:7][CH2:6][N:5]([C:8]2[NH:12][C:11]3[CH:13]=[CH:14][CH:15]=[C:16]([C:17]([O:19][CH3:20])=[O:18])[C:10]=3[N:9]=2)[CH2:4][C@H:3]1[O:21][CH3:22].[Cl:23][C:24]1[N:25]=[C:26]([C:31](O)=[O:32])[NH:27][C:28]=1[CH2:29][CH3:30].CCN=C=NCCCN(C)C.Cl.C1C=CC2N(O)N=NC=2C=1>CC(N(C)C)=O.C(OCC)(=O)C>[Cl:23][C:24]1[N:25]=[C:26]([C:31]([NH:1][C@H:2]2[CH2:7][CH2:6][N:5]([C:8]3[NH:12][C:11]4[CH:13]=[CH:14][CH:15]=[C:16]([C:17]([O:19][CH3:20])=[O:18])[C:10]=4[N:9]=3)[CH2:4][C@H:3]2[O:21][CH3:22])=[O:32])[NH:27][C:28]=1[CH2:29][CH3:30]

Participants

7

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 675489294-chloro-5-ethyl-1H-imidazole-2-carboxylic acidHCID 86648756Methyl cis(+/-)-2-(4-amino-3-methoxypiperidin-1-yl)-1H-benzimidazole-4-carboxylate

Product 1

HCID 86648755Methyl cis(+/-)-2-(4-{[(4-chloro-5-ethyl-1H-imidazol-2-yl)carbonyl]amino}-3-methoxypiperidin-1-yl)-1H-benzimidazole-4-carboxylate

Reagents, catalysts & solvents 2

HCID 8857Ethyl AcetateSolventHCID 31374DimethylacetamideSolvent

Procedure

Methyl cis(±)-2-(4-amino-3-methoxypiperidin-1-yl)-1H-benzimidazole-4-carboxylate obtained in Example (187c) (220 mg, 0.75 mmol) and 4-chloro-5-ethyl-1H-imidazole-2-carboxylic acid obtained in Example (1d) (130 mg, 0.75 mmol) were dissolved in DMA (5 ml). WSC hydrochloride (580 mg, 3 mmol) and HOBt (100 mg, 0.75 mmol) were added, and the mixture was stirred at room temperature overnight. The reaction solution was diluted with ethyl acetate, washed with water and brine, and dried over anhydrous sodium sulfate. Following concentration under reduced pressure, the residue was recrystallized from an ethyl acetate/hexane solvent to obtain the title compound as crystals.

Workup

  1. washwashed with water and brine
  2. dry with materialdried over anhydrous sodium sulfate
  3. concentrationconcentration under reduced pressure
  4. customthe residue was recrystallized from an ethyl acetate/hexane solvent

Sources & evidence

ORD record
ord-08fd2e48112a4090be5d244894df3ce4
Source dataset
uspto-grants-2013_09
Patent number
US08536197B2

Reaction notes

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