1,2-Dimethoxyethane → [1-(2-{5-[4'-(2-tert-butoxycarbonylamino-acetyl)-biphenyl-4-yl]-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl)-2-methyl-propyl]-carbamic acid methyl ester

HRID 2392329Notes

Reaction equation

HRID 2392329 reaction equation
[C:1]([O:5][C:6](=[O:18])[NH:7][CH2:8][C:9]([C:11]1[CH:16]=[CH:15][C:14](Br)=[CH:13][CH:12]=1)=[O:10])([CH3:4])([CH3:3])[CH3:2].[CH3:19][O:20][C:21](=[O:54])[NH:22][CH:23]([C:27]([N:29]1[CH2:33][CH2:32][CH2:31][CH:30]1[C:34]1[NH:35][C:36]([C:39]2[CH:44]=[CH:43][C:42](B3OC(C)(C)C(C)(C)O3)=[CH:41][CH:40]=2)=[CH:37][N:38]=1)=[O:28])[CH:24]([CH3:26])[CH3:25].C(=O)([O-])[O-].[K+].[K+].COCCOC>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O>[CH3:19][O:20][C:21](=[O:54])[NH:22][CH:23]([C:27]([N:29]1[CH2:33][CH2:32][CH2:31][CH:30]1[C:34]1[NH:35][C:36]([C:39]2[CH:40]=[CH:41][C:42]([C:14]3[CH:15]=[CH:16][C:11]([C:9](=[O:10])[CH2:8][NH:7][C:6]([O:5][C:1]([CH3:4])([CH3:3])[CH3:2])=[O:18])=[CH:12][CH:13]=3)=[CH:43][CH:44]=2)=[CH:37][N:38]=1)=[O:28])[CH:24]([CH3:26])[CH3:25]

Participants

7

Reactant 4

HCID 80711,2-DimethoxyethaneHCID 11430Potassium CarbonateHCID 59610197tert-Butyl [2-(4-bromophenyl)-2-oxoethyl]carbamateHCID 66619939[2-Methyl-1-(2-{4-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl)-propyl]-carbamic acid methyl ester

Product 1

HCID 66620939[1-(2-{5-[4'-(2-tert-butoxycarbonylamino-acetyl)-biphenyl-4-yl]-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl)-2-methyl-propyl]-carbamic acid methyl esterYield 44%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent

Conditions

Temperature
80 °C

Procedure

A mixture of [2-(4-Bromo-phenyl)-2-oxo-ethyl]-carbamic acid tert-butyl ester (1 g, 3.2 mmol), [2-methyl-1-(2-{5-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-1H-imidazol-2-yl}-pyrrolidine-1-carbonyl)-propyl]-carbamic acid methyl ester (1.57 g, 3.2 mmol), tetrakis(triphenylphosphine)palladium(0) (183 mg, 0.15 mmol), potassium carbonate (878 mg, 6.5 mmol), 1,2-dimethoxyethane (25 mL) and water (2.5 mL) was stirred at 80° C. for 16 hours. The mixture was cooled and all volatiles were removed under reduced pressure. The resulting residue was taken up in dichloromethane (100 mL) and washed with water (25 mL) and saturated sodium chloride (25 mL). The organic phase was dried over sodium sulfate and filtered. The solvent was removed under reduced pressure and the residue was subjected to flash chromatography with eluent of (10% methanol in ethyl acetate) and hexane. The product-containing fractions were combined and the solvent was removed under reduced pressure to provide [1-(2-{5-[4′-(2-tert-butoxycarbonylamino-acetyl)-biphenyl-4-yl]-1H-imidazol-2-yl}-pyrrolidine-1-carbonyl)-2-methyl-propyl]-carbamic acid methyl ester (869 mg, 1.4 mmol, 44%).

Workup

  1. temperatureThe mixture was cooled
  2. customall volatiles were removed under reduced pressure
  3. washwashed with water (25 mL) and saturated sodium chloride (25 mL)
  4. dry with materialThe organic phase was dried over sodium sulfate
  5. filtrationfiltered
  6. customThe solvent was removed under reduced pressure
  7. customthe solvent was removed under reduced pressure

Sources & evidence

ORD record
ord-03992339ce224058ac08ed0d180ab475
Source dataset
uspto-grants-2012_09
Patent number
US08273341B2

Reaction notes

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