Sodium Bicarbonate → 2-(5-{4'-[2-(1-Boc-pyrrolidin-3-yl)-3H-imidazol-4-yl]-biphenyl-4-yl}-1H-imidazol-2-yl)-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 79628

Reaction equation

HRID 79628 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][CH:10]([C:13]2[NH:14][C:15]([C:18]3[CH:23]=[CH:22][C:21](Br)=[CH:20][CH:19]=3)=[CH:16][N:17]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:25]([O:29][C:30]([N:32]1[CH2:36][CH2:35][CH2:34][CH:33]1[C:37]1[NH:38][C:39]([C:42]2[CH:47]=[CH:46][C:45](B3OC(C)(C)C(C)(C)O3)=[CH:44][CH:43]=2)=[CH:40][N:41]=1)=[O:31])([CH3:28])([CH3:27])[CH3:26].C([O-])(O)=O.[Na+]>COCCOC.O>[C:25]([O:29][C:30]([N:32]1[CH2:36][CH2:35][CH2:34][CH:33]1[C:37]1[NH:38][C:39]([C:42]2[CH:47]=[CH:46][C:45]([C:21]3[CH:22]=[CH:23][C:18]([C:15]4[NH:14][C:13]([CH:10]5[CH2:11][CH2:12][N:8]([C:6]([O:5][C:1]([CH3:4])([CH3:3])[CH3:2])=[O:7])[CH2:9]5)=[N:17][CH:16]=4)=[CH:19][CH:20]=3)=[CH:44][CH:43]=2)=[CH:40][N:41]=1)=[O:31])([CH3:28])([CH3:26])[CH3:27]

Participants

6

Reactant 3

HCID 516892Sodium BicarbonateHCID 574497592-{4-[4-(4,4,5,5-Tetramethyl[1,3,2]dioxaborolan-2-yl)phenyl]-1h-imidazol-2-yl}pyrrolidine-1-carboxylic acid tert-butyl esterHCID 59611262tert-Butyl 3-(5-(4-bromophenyl)-1H-imidazol-2-yl)pyrrolidine-1-carboxylate

Product 1

HCID 666202612-(5-{4'-[2-(1-Boc-pyrrolidin-3-yl)-3H-imidazol-4-yl]-biphenyl-4-yl}-1H-imidazol-2-yl)-pyrrolidine-1-carboxylic acid tert-butyl esterYield 64%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 80711,2-DimethoxyethaneSolvent

Conditions

Temperature
80 °C

Procedure

Pd(Pb3)4 (54 mg, 0.046 mmol) was added to a mixture 3-[5-(4-bromo-phenyl)-1H-imidazol-2-yl]-pyrrolidine-1-carboxylic acid tert-butyl ester (378 mg, 0.97 mmol), 2-{5-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-1H-imidazol-2-yl}-pyrrolidine-1-carboxylic acid tert-butyl ester (408 mg, 0.93 mmol), NaHCO3 (273 mg, 3.26 mmol) in 1,2-dimethoxyethane (8 mL) and water (2 mL). The reaction mixture was flushed with nitrogen, heated at 80° C. for 6 hours, and then the volatile component was removed in vacuo. The residue was dissolved in ethyl acetate (100 mL), washed with NaHCO3 solution, water and brine, dried over Na2SO4, filtered and concentrated in vacuo. The obtained residue was purified by flash chromatography to provide the desired product as a white solid (370 mg, 64%). m/z 625.1 (M+H)+.

Workup

  1. customThe reaction mixture was flushed with nitrogen
  2. customthe volatile component was removed in vacuo
  3. dissolutionThe residue was dissolved in ethyl acetate (100 mL)
  4. washwashed with NaHCO3 solution, water and brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe obtained residue was purified by flash chromatography

Sources & evidence

ORD record
ord-9b12abe57ccb4d1ebcec2abe2fff0b9d
Source dataset
uspto-grants-2014_09
Patent number
US08841278B2

Linked notes

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