Ethanol → 1-(3-Bromophenyl)pyrene

HRID 1852552Notes

Reaction equation

HRID 1852552 reaction equation
Br[C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([Br:8])[CH:3]=1.[C:9]1(B(O)O)[C:22]2[C:23]3=[C:24]4[C:19](=[CH:20][CH:21]=2)[CH:18]=[CH:17][CH:16]=[C:15]4[CH:14]=[CH:13][C:12]3=[CH:11][CH:10]=1.C([O-])([O-])=O.[Na+].[Na+].CCO>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.C1(C)C=CC=CC=1>[Br:8][C:4]1[CH:3]=[C:2]([C:16]2[C:15]3[C:24]4=[C:23]5[C:12](=[CH:13][CH:14]=3)[CH:11]=[CH:10][CH:9]=[C:22]5[CH:21]=[CH:20][C:19]4=[CH:18][CH:17]=2)[CH:7]=[CH:6][CH:5]=1

Participants

7

Reactant 4

HCID 702EthanolHCID 79271,3-DibromobenzeneHCID 10340Sodium CarbonateHCID 5084102Pyren-1-ylboronic acid

Product 1

HCID 578361411-(3-Bromophenyl)pyreneYield 72%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 1140TolueneSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of 10 g (42.4 mmol) of 1,3-dibromobenzene, 10.43 g (42.4 mmol) of pyren-1-ylboronic acid, 0.5 g (0.424 mmol) of tetrakis(triphenylphosphine)palladium, 32 ml of 2M Na2CO3, 80 ml of EtOH and 160 ml toluene was degassed and placed under nitrogen, and then heated at 90° C. for 24 h. After finishing the reaction, The mixture was allowed to cool to room temperature. The organic layer was extracted with ethyl acetate and water, dried with anhydrous magnesium sulfate, the solvent was removed and the residue was purified by column chromatography on silica (hexane-dichloromethane) to give product 10.9 g (72%) as a white solid.

Workup

  1. customwas degassed
  2. customthe reaction
  3. temperatureto cool to room temperature
  4. extractionThe organic layer was extracted with ethyl acetate and water
  5. dry with materialdried with anhydrous magnesium sulfate
  6. customthe solvent was removed
  7. customthe residue was purified by column chromatography on silica (hexane-dichloromethane)

Sources & evidence

ORD record
ord-75d439a8c82b4ffa956712613c640225
Source dataset
uspto-grants-2015_02
Patent number
US08962160B2

Reaction notes

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