Potassium Carbonate → 4-[3-[2-(Pyrroldin-1-ylmethyl)pyrrolidin-1-yl]propoxy]-2-[(4-chlorophenoxy)methyl]-1-[3-[1-(t-butoxycarbonyl)piperidin-4-yl]propyl]benzimidazole

HRID 1384025Notes

Reaction equation

HRID 1384025 reaction equation
Br[CH2:2][CH2:3][CH2:4][O:5][C:6]1[C:14]2[N:13]=[C:12]([CH2:15][O:16][C:17]3[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=3)[N:11]([CH2:24][CH2:25][CH2:26][CH:27]3[CH2:32][CH2:31][N:30]([C:33]([O:35][C:36]([CH3:39])([CH3:38])[CH3:37])=[O:34])[CH2:29][CH2:28]3)[C:10]=2[CH:9]=[CH:8][CH:7]=1.C(=O)([O-])[O-].[K+].[K+].[N:46]1([CH2:51][C@@H:52]2[CH2:56][CH2:55][CH2:54][NH:53]2)[CH2:50][CH2:49][CH2:48][CH2:47]1>CN(C)C=O>[N:46]1([CH2:51][CH:52]2[CH2:56][CH2:55][CH2:54][N:53]2[CH2:2][CH2:3][CH2:4][O:5][C:6]2[C:14]3[N:13]=[C:12]([CH2:15][O:16][C:17]4[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=4)[N:11]([CH2:24][CH2:25][CH2:26][CH:27]4[CH2:32][CH2:31][N:30]([C:33]([O:35][C:36]([CH3:39])([CH3:38])[CH3:37])=[O:34])[CH2:29][CH2:28]4)[C:10]=3[CH:9]=[CH:8][CH:7]=2)[CH2:50][CH2:49][CH2:48][CH2:47]1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 853152(S)-(+)-1-(2-Pyrrolidinylmethyl)pyrrolidineHCID 211884734-(3-Bromopropoxy)-2-[(4-chlorophenoxy)methyl]-1-[3-[1-(t-butoxycarbonyl)piperidin-4-yl]propyl]benzimidazole

Product 1

HCID 701636414-[3-[2-(Pyrroldin-1-ylmethyl)pyrrolidin-1-yl]propoxy]-2-[(4-chlorophenoxy)methyl]-1-[3-[1-(t-butoxycarbonyl)piperidin-4-yl]propyl]benzimidazoleYield 78%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

A solution of 4-[3-bromopropoxy]-2-[(4-chlorophenoxy)methyl]-1-[3-[1-(t-butoxycarbonyl)piperidin-4-yl]propyl]benzimidazole (77 mg, 0.124 mmol, 1 eq) in anhydrous N,N-dimethylformamide (2 ml) was treated with potassium carbonate (51.3 mg, 0.37 mmol, 2 eq) and (S)-(+)-2-(pyrroldin-1-ylmethyl)pyrrolidine (28.7 mg, 0.19 mmol, 1.5 eq). The resulting mixture was stirred at 80° C. for six hours. The reaction was quenched by the addition of water (10 ml). The aqueous fraction was extracted with ethyl acetate (3×10 ml). The organic fractions were combined, washed with water (3×10 ml), brine (1×10 ml), and then dried over sodium sulfate. The solvents were removed in vacuo to yield an oily crude product which was purified by flash chromatography to provide the title product.

Workup

  1. customThe reaction was quenched by the addition of water (10 ml)
  2. extractionThe aqueous fraction was extracted with ethyl acetate (3×10 ml)
  3. washwashed with water (3×10 ml), brine (1×10 ml)
  4. dry with materialdried over sodium sulfate
  5. customThe solvents were removed in vacuo
  6. customto yield an oily crude product which
  7. customwas purified by flash chromatography

Sources & evidence

ORD record
ord-eb0d066394f24dfeb2d766369a3401c8
Source dataset
uspto-grants-2001_07
Patent number
US06255494B1

Reaction notes

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