Water → HCID 178439853, compound

HRID 452168Notes

Reaction equation

HRID 452168 reaction equation
Br[C:2]1[CH:3]=[C:4]([CH3:14])[C:5]2[NH:9][C:8]([CH2:10][CH2:11][CH3:12])=[N:7][C:6]=2[CH:13]=1.C([Sn](CCCC)(CCCC)[C:20]1[O:21][CH:22]=[CH:23][CH:24]=1)CCC.O>C1(C)C=CC=CC=1.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:21]1[CH:22]=[CH:23][CH:24]=[C:20]1[C:2]1[CH:3]=[C:4]([CH3:14])[C:5]2[NH:9][C:8]([CH2:10][CH2:11][CH3:12])=[N:7][C:6]=2[CH:13]=1

Participants

6

Reactant 3

HCID 962WaterHCID 43936882-(Tributylstannyl)furanHCID 178439846HCID 178439846, compound

Product 1

HCID 178439853HCID 178439853, compoundYield 30.1%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 1140TolueneSolvent

Conditions

Temperature
100 °C

Procedure

Under a nitrogen atmosphere, 6-bromo-4-methyl-2-propylbenzimidazole (WO2004082621; 200 mg, 0.83 mmol) was dissolved in toluene (4 mL), tributyl(2-furanyl)tin (0.78 mL, 2.49 mmol) and tetrakis(triphenylphosphine)palladium (288 mg, 0.25 mmol) were added, and the mixture was stirred at 100° C. for 3 days. Water was added to the mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate=8/2 to 1/9) to give the title compound (60 mg, 30%).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (hexane/ethyl acetate=8/2 to 1/9)

Sources & evidence

ORD record
ord-543fab63e9c54560b5d546df33ec958e
Source dataset
uspto-grants-2013_07
Patent number
US08486980B2

Reaction notes

Loading…