Sodium Bicarbonate → 3-(6-{7-[2-(1-tert-Butoxycarbonyl-pyrrolidin-2-yl)-3H-imidazol-4-yl]-9,10-dihydro-phenanthren-2-yl]-1H-benzoimidazol-2-yl)-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester

HRID 417589Notes

Reaction equation

HRID 417589 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][CH2:10][CH:9]1[C:13]1[NH:14][C:15]([C:18]2[CH:31]=[CH:30][C:29]3[C:28]4[C:23](=[CH:24][C:25](Br)=[CH:26][CH:27]=4)[CH2:22][CH2:21][C:20]=3[CH:19]=2)=[CH:16][N:17]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:33]([O:37][C:38]([N:40]1[CH:45]([C:46]2[NH:50][C:49]3[CH:51]=[C:52](B4OC(C)(C)C(C)(C)O4)[CH:53]=[CH:54][C:48]=3[N:47]=2)[CH:44]2[CH2:64][CH:41]1[CH2:42][CH2:43]2)=[O:39])([CH3:36])([CH3:35])[CH3:34].C([O-])(O)=O.[Na+]>COCCOC.O>[C:33]([O:37][C:38]([N:40]1[CH:45]([C:46]2[NH:50][C:49]3[CH:51]=[C:52]([C:25]4[CH:26]=[CH:27][C:28]5[C:29]6[C:20](=[CH:19][C:18]([C:15]7[NH:14][C:13]([CH:9]8[CH2:10][CH2:11][CH2:12][N:8]8[C:6]([O:5][C:1]([CH3:2])([CH3:3])[CH3:4])=[O:7])=[N:17][CH:16]=7)=[CH:31][CH:30]=6)[CH2:21][CH2:22][C:23]=5[CH:24]=4)[CH:53]=[CH:54][C:48]=3[N:47]=2)[CH:44]2[CH2:64][CH:41]1[CH2:42][CH2:43]2)=[O:39])([CH3:36])([CH3:34])[CH3:35]

Participants

6

Reactant 3

HCID 516892Sodium BicarbonateHCID 66620440(1R,3S,4S)-3-[6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazol-2-yl]-2-azabicyclo[2.2.1]heptane-2-carboxylic acid 1,1-dimethylethyl esterHCID 666209942-[5-(7-bromo-9,10-dihydro-phenanthren-2-yl)-1H-imidazol-2-yl]-pyrrolidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 666211453-(6-{7-[2-(1-tert-Butoxycarbonyl-pyrrolidin-2-yl)-3H-imidazol-4-yl]-9,10-dihydro-phenanthren-2-yl]-1H-benzoimidazol-2-yl)-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl esterYield 59%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 80711,2-DimethoxyethaneSolvent

Conditions

Temperature
80 °C

Procedure

Pd(Ph3)4 (20 mg, 0.017 mmol) was added to a mixture 2-[5-(7-bromo-9,10-dihydro-phenanthren-2-yl)-1H-imidazol-2-yl]-pyrrolidine-1-carboxylic acid tert-butyl ester (173 mg, 0.35 mmol), 3-[6-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-benzoimidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester (154 mg, 0.35 mmol), NaHCO3 (103 mg, 1.22 mmol) in 1,2-dimethoxyethane (5 mL) and water (1 mL). The reaction mixture was flushed with nitrogen, heated at 80° C. for 16 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 3-(6-{7-[2-(1-tert-Butoxycarbonyl-pyrrolidin-2-yl)-3H-imidazol-4-yl]-9,10-dihydro-phenanthren-2-yl}-1H-benzoimidazol-2-yl)-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester as a white solid (150 mg, 59%). m/z 727.4 (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-db5026cf7b5a412eb4d0c64f4c58a639
Source dataset
uspto-grants-2012_01
Patent number
US08088368B2

Reaction notes

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