Sodium Carbonate → Methyl 4-(naphthalen-1-yl)benzoate

HRID 1830067Notes

Reaction equation

HRID 1830067 reaction equation
Br[C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][CH:3]=1.[C:12]1(B(O)O)[C:21]2[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=2)[CH:15]=[CH:14][CH:13]=1.C(=O)([O-])[O-].[Na+].[Na+]>C1(C)C=CC=CC=1.C(O)C.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>[CH3:9][O:8][C:6](=[O:7])[C:5]1[CH:10]=[CH:11][C:2]([C:20]2[C:21]3[C:16](=[CH:15][CH:14]=[CH:13][CH:12]=3)[CH:17]=[CH:18][CH:19]=2)=[CH:3][CH:4]=1

Participants

8

Reactant 3

HCID 10340Sodium CarbonateHCID 12081Methyl 4-bromobenzoateHCID 2545321-Naphthaleneboronic acid

Product 1

HCID 10934276Methyl 4-(naphthalen-1-yl)benzoateYield 97.8%

Reagents, catalysts & solvents 4

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolventHCID 962WaterSolventHCID 1140TolueneSolvent

Procedure

Methyl 4-bromobenzoate (0.96 g, 4.46 mmol) was added to a mixture of 1-naphthaleneboronic acid (0.73 g, 4.25 mmol) and sodium carbonate (0.075 g, 7.08 mmol) in toluene (30 mL), ethanol (6 mL) and water (12 mL). The resultant solution was purged with nitrogen for 10 minutes before tetrakis(triphenylphosphine)palladium(0) (0.10 g, 0.09 mmol) was added. The reaction mixture was heated to reflux for 65 hours. The solution was cooled to ambient temperature, then filtered through a pad of Celite, which was subsequently rinsed with ethyl acetate. The combined filtrate was diluted to 100 mL with water/ethyl acetate (1:1). The aqueous layer was extracted with ethyl acetate, and the combined extracts were dried over anhydrous magnesium sulfate, filtered, and evaporated to dryness to yield the title compound as a gold oil (1.09 g). This material was used without further purification in the next step.

Workup

  1. additionwas added
  2. temperatureThe reaction mixture was heated
  3. temperatureto reflux for 65 hours
  4. filtrationfiltered through a pad of Celite, which
  5. washwas subsequently rinsed with ethyl acetate
  6. additionThe combined filtrate was diluted to 100 mL with water/ethyl acetate (1:1)
  7. extractionThe aqueous layer was extracted with ethyl acetate
  8. dry with materialthe combined extracts were dried over anhydrous magnesium sulfate
  9. filtrationfiltered
  10. customevaporated to dryness

Sources & evidence

ORD record
ord-e475210bf40944c78c16233436969c6b
Source dataset
uspto-grants-2006_06
Patent number
US07064120B2

Reaction notes

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