1,2-Dimethoxyethane → tert-butyl {[5-(3-fluoropyridin-4-yl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl]methyl}methylcarbamate

HRID 1962611Notes

Reaction equation

HRID 1962611 reaction equation
[C:1]([O:5][C:6](=[O:25])[N:7]([CH2:9][C:10]1[CH:14]=[C:13](Br)[N:12]([S:16]([C:19]2[CH:20]=[N:21][CH:22]=[CH:23][CH:24]=2)(=[O:18])=[O:17])[CH:11]=1)[CH3:8])([CH3:4])([CH3:3])[CH3:2].O.[F:27][C:28]1[CH:29]=[N:30][CH:31]=[CH:32][C:33]=1B(O)O.C(=O)([O-])O.[Na+].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>[C:1]([O:5][C:6](=[O:25])[N:7]([CH2:9][C:10]1[CH:14]=[C:13]([C:33]2[CH:32]=[CH:31][N:30]=[CH:29][C:28]=2[F:27])[N:12]([S:16]([C:19]2[CH:20]=[N:21][CH:22]=[CH:23][CH:24]=2)(=[O:18])=[O:17])[CH:11]=1)[CH3:8])([CH3:4])([CH3:3])[CH3:2]

Participants

7

Reactant 4

HCID 80711,2-DimethoxyethaneHCID 516892Sodium Bicarbonate2×HCID 27793523-Fluoropyridine-4-boronic acid hydrateHCID 57522258tert-Butyl {[5-bromo-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl]methyl}methylcarbamate

Product 1

HCID 66974615tert-butyl {[5-(3-fluoropyridin-4-yl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl]methyl}methylcarbamateYield 27%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent

Conditions

Temperature
80 °C

Procedure

tert-Butyl{[5-bromo-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl]methyl}methylcarbamate (215 mg), (3-fluoropyridin-4-yl)boronic acid hydrate (120 mg), sodium hydrogencarbonate (126 mg) and tetrakis(triphenylphosphine)palladium (87 mg) were added to a degassed mixture of 1,2-dimethoxyethane (8 mL) and water (2 mL), and the mixture was stirred under a nitrogen atmosphere at 80° C. for 3 hr. The reaction mixture was allowed to cool, a saturated aqueous sodium hydrogencarbonate solution was added, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by basic silica gel column chromatography (eluent: hexane-ethyl acetate=1:1) to give the title compound as a pale-yellow oil (yield 60 mg, 27%).

Workup

  1. temperatureto cool
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe extract was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by basic silica gel column chromatography (eluent: hexane-ethyl acetate=1:1)

Sources & evidence

ORD record
ord-024ea4884e97420a821df995b2be72b2
Source dataset
uspto-grants-2013_04
Patent number
US08415368B2

Reaction notes

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