Sodium Carbonate → 2-(3-Bromophenyl)naphthalene

HRID 1660654Notes

Reaction equation

HRID 1660654 reaction equation
[CH:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][C:2]=1B(O)O.[Br:14][C:15]1[CH:16]=[C:17](I)[CH:18]=[CH:19][CH:20]=1.C(=O)([O-])[O-].[Na+].[Na+]>[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(C)C=CC=CC=1>[Br:14][C:15]1[CH:20]=[C:19]([C:2]2[CH:3]=[CH:4][C:5]3[C:10](=[CH:9][CH:8]=[CH:7][CH:6]=3)[CH:1]=2)[CH:18]=[CH:17][CH:16]=1

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 11561Benzene, 1-bromo-3-iodo-HCID 2734375(Naphthalen-2-yl)boronic acid

Product 1

HCID 230807732-(3-Bromophenyl)naphthaleneYield 76%

Reagents, catalysts & solvents 2

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 1140TolueneSolvent

Procedure

Under an argon gas atmosphere, 243 g (1.41 mol) of 2-naphthaleneboronic acid, 400 g (1.41 mol) of 3-bromoiodobenzene, 3.27 g (28.2 mmol) of tetrakis(triphenylphosphine) palladium(0), 6.4 L of toluene and 3.2 L of 2M sodium carbonate solution were mixed, and stirred for 24 hours while being refluxed. After the reaction in the mixture was over, the mixture experienced filtration, through which aqueous phase thereof was eliminated. After organic phase thereof was cleansed by water and dried with magnesium sulfate, toluene was distilled away under reduced pressure. Residue thereof was refined by silica-gel column chromatography, such that 303 g of 2(3-bromophenyl)naphthalene was obtained with an yield of 76%.

Workup

  1. temperaturewhile being refluxed
  2. customAfter the reaction in the mixture
  3. filtrationfiltration
  4. dry with materialdried with magnesium sulfate, toluene
  5. distillationwas distilled away under reduced pressure
  6. customwas obtained with an yield of 76%

Sources & evidence

ORD record
ord-d5fe4b313f8149d182fc49ff67a44bfa
Source dataset
uspto-grants-2011_10
Patent number
US08029697B2

Reaction notes

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