4-Chloroanisole → 4-Methoxybiphenyl

HRID 227872

Reaction equation

HRID 227872 reaction equation
[C:1]1(B(O)O)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[F-].[K+].Cl[C:13]1[CH:18]=[CH:17][C:16]([O:19][CH3:20])=[CH:15][CH:14]=1>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C(P(C(C)(C)C)C1C=CC=CC=1C1C=CC=CC=1)(C)(C)C.C1COCC1>[CH3:20][O:19][C:16]1[CH:17]=[CH:18][C:13]([C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)=[CH:14][CH:15]=1

Participants

7

Reactant 3

HCID 121674-ChloroanisoleHCID 66827Phenylboronic AcidHCID 522689Potassium Fluoride

Product 1

HCID 119434-MethoxybiphenylYield 96%

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalystHCID 27342152-(Di-tert-butylphosphino)biphenylCatalystHCID 8028TetrahydrofuranSolvent

Procedure

An oven dried resealable Schlenk tube was evacuated and backfilled with argon and charged with palladium acetate (2.2 mg, 0.01 mmol, 1.0 mol %), 2-(di-tert-butylphosphino)biphenyl (6.0 mg, 0.020 mmol, 2.0 mol %), phenylboronic acid (183 mg, 1.5 mmol), and potassium fluoride (174 mg, 3.0 mmol). The tube was evacuated and backfilled with argon, and THF (1 mL) and 4-chloroanisole (0.123 mL, 1.0 mmol) were added through a rubber septum. The tube was sealed with a teflon screwcap, and the reaction mixture was stirred at room temperature until the starting aryl chloride had been completely consumed as judged by GC analysis. The reaction mixture was then diluted with ether (30 mL), filtered through celite, and concentrated. The crude material was purified by flash chromatography on silica gel to afford 176 mg (96%) of the title compound.

Workup

  1. customAn oven dried resealable Schlenk tube
  2. customwas evacuated
  3. customThe tube was evacuated
  4. additionwere added through a rubber septum
  5. customhad been completely consumed
  6. additionThe reaction mixture was then diluted with ether (30 mL)
  7. filtrationfiltered through celite
  8. concentrationconcentrated
  9. customThe crude material was purified by flash chromatography on silica gel

Sources & evidence

ORD record
ord-91add83291a24708ac9bef36a53b679f
Source dataset
uspto-grants-2009_07
Patent number
US07560582B2

Linked notes

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