4-Iodophenol → 4-(4-Methylphenyl)phenol

HRID 643775Notes

Reaction equation

HRID 643775 reaction equation
I[C:2]1[CH:7]=[CH:6][C:5]([OH:8])=[CH:4][CH:3]=1.[CH3:9][C:10]1[CH:15]=[CH:14][C:13](B(O)O)=[CH:12][CH:11]=1.[OH-].[Na+]>O.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[CH3:9][C:10]1[CH:15]=[CH:14][C:13]([C:2]2[CH:7]=[CH:6][C:5]([OH:8])=[CH:4][CH:3]=2)=[CH:12][CH:11]=1

Participants

6

Reactant 3

HCID 108944-IodophenolHCID 14798Sodium HydroxideHCID 79799Tolylboronic acid

Product 1

HCID 13827894-(4-Methylphenyl)phenolYield 48%

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetateCatalystHCID 962WaterSolvent2×

Procedure

Palladium(II) acetate (52 mg, 0.23 mmol) was added to a mixture of 4-iodophenol (5.00 g, 22.7 mmol), 4-methyl-phenyl-boronic acid (3.4 g, 25.0 mmol), sodium hydroxide (3.6 g, 90 mmol), and water (9 mL). The mixture was diluted twice with water (9 mL) to facilitate stirring. An exotherm occurred, and after 15 minutes the internal temperature was 50° C. The reaction mixture was cooled to room temperature and allowed to stir overnight, and the solid was filtered off, washed with water, and dissolved in ethyl acetate. The organic solution was washed with water three times with 1 M NaOH, and then again with water until the washings were neutral. The solution was then dried (sodium sulfate), filtered, and evaporated to give 4′-methyl-biphenyl-4-ol (2 g, 48%).

Workup

  1. stirringto stir overnight
  2. filtrationthe solid was filtered off
  3. washwashed with water
  4. dissolutiondissolved in ethyl acetate
  5. washThe organic solution was washed with water three times with 1 M NaOH
  6. dry with materialThe solution was then dried (sodium sulfate)
  7. filtrationfiltered
  8. customevaporated

Sources & evidence

ORD record
ord-9bafc974a9ed4234958e193b868e643c
Source dataset
uspto-grants-2010_04
Patent number
US07700632B2

Reaction notes

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