1,2-Dimethoxyethane → 5-(2-fluoropyridin-3-yl)-1-(phenylsulfonyl)-1H-pyrrole-3-carbaldehyde

HRID 1426655Notes

Reaction equation

HRID 1426655 reaction equation
Br[C:2]1[N:6]([S:7]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)(=[O:9])=[O:8])[CH:5]=[C:4]([CH:16]=[O:17])[CH:3]=1.[F:18][C:19]1[C:24](B(O)O)=[CH:23][CH:22]=[CH:21][N:20]=1.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>[F:18][C:19]1[C:24]([C:2]2[N:6]([S:7]([C:10]3[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=3)(=[O:9])=[O:8])[CH:5]=[C:4]([CH:16]=[O:17])[CH:3]=2)=[CH:23][CH:22]=[CH:21][N:20]=1

Participants

7

Reactant 4

HCID 80711,2-DimethoxyethaneHCID 516892Sodium Bicarbonate2×HCID 27832702-Fluoropyridine-3-boronic acidHCID 862328055-Bromo-1-(phenylsulfonyl)-1H-pyrrole-3-carbaldehyde

Product 1

HCID 866239745-(2-fluoropyridin-3-yl)-1-(phenylsulfonyl)-1H-pyrrole-3-carbaldehydeYield 68%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent

Conditions

Temperature
80 °C

Procedure

5-bromo-1-(phenylsulfonyl)-1H-pyrrole-3-carbaldehyde (3.15 g), (2-fluoropyridin-3-yl)boronic acid (2.83 g), sodium hydrogen carbonate (2.53 g) and tetrakis(triphenylphosphine)palladium (870 mg) were added to a deaerated mixture of 1,2-dimethoxyethane (80 mL) and water (20 mL), and the mixture was stirred under a nitrogen atmosphere at 80° C. for 5 hr. The reaction mixture was cooled, saturated aqueous sodium hydrogen carbonate 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 silica gel column chromatography (eluent: hexane-ethyl acetate=4:1→2:3) to give the title compound as a colorless oil (yield 2.25 g, 68%).

Workup

  1. temperatureThe reaction mixture was cooled
  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 silica gel column chromatography (eluent: hexane-ethyl acetate=4:1→2:3)

Sources & evidence

ORD record
ord-043f431db3c045c4a028d71e750de8e7
Source dataset
uspto-grants-2015_01
Patent number
US08933105B2

Reaction notes

Loading…