Sodium Carbonate → Tert-butyl 2-(benzamido)-4-(2-methylphenyl)benzoate

HRID 1673466Notes

Reaction equation

HRID 1673466 reaction equation
[CH3:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1B(O)O.C(=O)([O-])[O-].[Na+].[Na+].[C:17]([NH:25][C:26]1[CH:38]=[C:37](Br)[CH:36]=[CH:35][C:27]=1[C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])(=[O:24])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1>CN(C)C(=O)C>[C:17]([NH:25][C:26]1[CH:38]=[C:37]([C:3]2[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=2[CH3:1])[CH:36]=[CH:35][C:27]=1[C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])(=[O:24])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

Participants

5

Reactant 3

HCID 10340Sodium CarbonateHCID 27332672-Methylphenyl boronic acidHCID 67343005Tert-butyl 2-(benzamido)-4-bromobenzoate

Product 1

HCID 67341764Tert-butyl 2-(benzamido)-4-(2-methylphenyl)benzoate

Reagents, catalysts & solvents 1

HCID 31374DimethylacetamideSolvent

Conditions

Temperature
110 °C

Procedure

38 mg of 2-methylphenylboronic acid, 49 mg of sodium carbonate and 6 mg of polymer supported bis(acetato)triphenylphosphine palladium(II) were added to 2.5 mL of N,N-dimethylacetamide solution containing 70 mg of tert-butyl 2-(benzamido)-4-bromobenzoate, and stirred at 110° C. for 20 hours. After the reaction mixture was cooled to room temperature, 6 mg of polymer supported bis(acetato)triphenylphosphine palladium(II) was added and stirred at 110° C. for 22 hours. After the reaction mixture was cooled to room temperature, insoluble were removed by filtration and ethyl acetate and 10% citric acid aqueous solution were added. The organic layer was separated and dried over anhydrous magnesium sulfate after washed with 10% citric acid aqueous solution and a saturated sodium chloride aqueous solution sequentially, and the solvent was evaporated under reduced pressure. The obtained residue was purified with silica gel column chromatography [Flash Tube 2008 manufactured by Trikonex Company, eluent; hexane:ethyl acetate=4:1] to obtain tert-butyl 2-(benzamido)-4-(2-methylphenyl)benzoate.

Workup

  1. temperatureAfter the reaction mixture was cooled to room temperature
  2. additionwas added
  3. stirringstirred at 110° C. for 22 hours
  4. temperatureAfter the reaction mixture was cooled to room temperature
  5. custominsoluble were removed by filtration and ethyl acetate and 10% citric acid aqueous solution
  6. additionwere added
  7. customThe organic layer was separated
  8. dry with materialdried over anhydrous magnesium sulfate
  9. washafter washed with 10% citric acid aqueous solution
  10. customa saturated sodium chloride aqueous solution sequentially, and the solvent was evaporated under reduced pressure
  11. customThe obtained residue was purified with silica gel column chromatography [Flash Tube 2008 manufactured by Trikonex Company, eluent; hexane:ethyl acetate=4:1]

Sources & evidence

ORD record
ord-dd1c1d84021d49ef89c66dc6195d28b7
Source dataset
uspto-grants-2011_08
Patent number
US07999132B2

Reaction notes

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