1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → tert-butyl 4-(2-{bis[(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-imidazol-2-yl)methyl]amino}-2-oxoethyl)-1-piperidine carboxylate

HRID 68650Notes

Reaction equation

HRID 68650 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([CH2:14][C:15]([OH:17])=O)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH3:18][Si:19]([CH3:46])([CH3:45])[CH2:20][CH2:21][O:22][CH2:23][N:24]1[CH:28]=[CH:27][N:26]=[C:25]1[CH2:29][NH:30][CH2:31][C:32]1[N:33]([CH2:37][O:38][CH2:39][CH2:40][Si:41]([CH3:44])([CH3:43])[CH3:42])[CH:34]=[CH:35][N:36]=1.C(N=C=NCCCN(C)C)C.ON1C2C=CC=CC=2N=N1>CN(C)C=O.CN(C)C1C=CN=CC=1.O>[CH3:18][Si:19]([CH3:46])([CH3:45])[CH2:20][CH2:21][O:22][CH2:23][N:24]1[CH:28]=[CH:27][N:26]=[C:25]1[CH2:29][N:30]([CH2:31][C:32]1[N:33]([CH2:37][O:38][CH2:39][CH2:40][Si:41]([CH3:44])([CH3:43])[CH3:42])[CH:34]=[CH:35][N:36]=1)[C:15](=[O:17])[CH2:14][CH:11]1[CH2:10][CH2:9][N:8]([C:6]([O:5][C:1]([CH3:2])([CH3:3])[CH3:4])=[O:7])[CH2:13][CH2:12]1

Participants

8

Reactant 4

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 1512539[1-(tert-Butoxycarbonyl)piperidin-4-yl]acetic acidHCID 67162798N,N-bis[(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-imidazol-2-yl)methyl]amine

Product 1

HCID 67162853tert-butyl 4-(2-{bis[(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-imidazol-2-yl)methyl]amino}-2-oxoethyl)-1-piperidine carboxylateYield 15.9%

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

Under an argon atmosphere at room temperature, [1-(tert-butoxycarbonyl)-4-piperidinyl]acetic acid (500 mg) and the compound 2 (899 mg) were dissolved in anhydrous dimethyl formamide (12 mL), and 1-ethyl-3-[3-(dimethylamino)propyl]carbodiimide (590 mg), 1-hydroxybenztriazole (417 mg) and 4-dimethylaminopyridine (377 mg) were added, followed by stirring at room temperature for 16 hours. After the addition of city water and stirring, the obtained solution was extracted three times with ethyl acetate. The organic layer was collected and then washed with saturated brine. After drying over anhydrous sodium sulfate, the solvent was distilled off. The residue was purified by silica gel column chromatography to obtain the title compound (216 mg) having the following physical properties.

Workup

  1. stirringstirring
  2. extractionthe obtained solution was extracted three times with ethyl acetate
  3. customThe organic layer was collected
  4. washwashed with saturated brine
  5. dry with materialAfter drying over anhydrous sodium sulfate
  6. distillationthe solvent was distilled off
  7. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-1a918d66fcb246d69898a6bf8353ac98
Source dataset
uspto-grants-2014_09
Patent number
US08822459B2

Reaction notes

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