Potassium Phosphate, Tribasic → 3-Phenylfuran

HRID 1403399Notes

Reaction equation

HRID 1403399 reaction equation
[C:1]1(B(O)O)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.Br[C:11]1[CH:15]=[CH:14][O:13][CH:12]=1.[O-]P([O-])([O-])=O.[K+].[K+].[K+]>O1CCOCC1.O.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>[C:1]1([C:11]2[CH:15]=[CH:14][O:13][CH:12]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

7

Reactant 3

HCID 62657Potassium Phosphate, TribasicHCID 66827Phenylboronic AcidHCID 891643-Bromofuran

Product 1

HCID 5188023-PhenylfuranYield 93.8%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
90 °C

Procedure

To a solution of phenylboronic acid (15 g, 123.02 mmol) in dioxane (150.0 mL) and water (3.0 mL) was added 3-bromofuran (16.3 g, 110.91 mmol), K3PO4 (43 g, 202.57 mmol) and Pd(PPh3)4 (6.0 g, 5.19 mmol) with stirring for 2 h at 90° C. in an oil bath maintained with an inert atmosphere of nitrogen. The reaction mixture was concentrated under reduced pressure to give the residue, which was purified by silica gel column chromatography eluting with 1% ethyl acetate in petroleum ether to afford 3-phenylfuran as a white solid (15 g, 85%).

Workup

  1. temperaturemaintained with an inert atmosphere of nitrogen
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. customto give the residue, which
  4. customwas purified by silica gel column chromatography
  5. washeluting with 1% ethyl acetate in petroleum ether

Sources & evidence

ORD record
ord-76fadfe7b86847e0bc4ce09a6258bc58
Source dataset
uspto-grants-2014_12
Patent number
US08912188B2

Reaction notes

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