Sodium Carbonate → 5-(3-Chloro-phenyl)-3-methoxy-3-methyl-1,3-dihydro-indol-2-one

HRID 852484Notes

Reaction equation

HRID 852484 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[NH:7][C:6](=[O:11])[C:5]2([O:13][CH3:14])[CH3:12].[Cl:15][C:16]1[CH:17]=[C:18](B(O)O)[CH:19]=[CH:20][CH:21]=1.C(=O)([O-])[O-].[Na+].[Na+]>C(COC)OC.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>[Cl:15][C:16]1[CH:21]=[C:20]([C:2]2[CH:3]=[C:4]3[C:8](=[CH:9][CH:10]=2)[NH:7][C:6](=[O:11])[C:5]3([O:13][CH3:14])[CH3:12])[CH:19]=[CH:18][CH:17]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 2734323(3-Chlorophenyl)boronic acidHCID 120859365-Bromo-3-methoxy-3-methyl-1,3-dihydro-indol-2-one

Product 1

HCID 98173895-(3-Chloro-phenyl)-3-methoxy-3-methyl-1,3-dihydro-indol-2-oneYield 29%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent2×HCID 80711,2-DimethoxyethaneSolvent

Procedure

A solution of 5-bromo-3-methoxy-3-methyl-1,3-dihydro-indol-2-one (0.52 g, 2.0 mmol) and tetrakis(triphenylphosphine)palladium(0) (0.12 g, 0.1 mmol) was dissolved in dimethoxyethane (22 cm3). After 15 min., 3-chlorophenylboronic acid (0.63 g, 4.1 mmol) and sodium carbonate (1.0 g) in water (10 cm3) was added and the reaction was heated under reflux. After 2 h the mixture was cooled, poured into water and extracted with EtOAc (×2), the combined organic extracts were washed with sodium hydroxide solution (1N, ×2) water, brine, dried (MgSO4) and evaporated. The residue was then purified by column chromatography (SiO2, EtOAc:hexane, 5:1) to afford 5-(3-chloro-phenyl)-3-methoxy-3-methyl-1,3-dihydro-indol-2-one (0.17 g, 0.58 mmol, 29%): 1H NMR (CDCl3) δ 1.65 (s, 3H), 2.91 (s, 1H), 3.24 (s, 3H), 6.92 (d, 1H, J=8.1 Hz), 7.26-7.38 (m, 2H), 7.43-7.46 (m, 1H), 7.52-7.55 (m, 1H), 7.62 (d, 1H, J=1.8 Hz); MS ((+) APCI) m/z 288 (M+H)+.

Workup

  1. temperaturethe reaction was heated
  2. temperatureunder reflux
  3. temperatureAfter 2 h the mixture was cooled
  4. extractionextracted with EtOAc (×2)
  5. washthe combined organic extracts were washed with sodium hydroxide solution (1N, ×2) water, brine
  6. dry with materialdried (MgSO4)
  7. customevaporated
  8. customThe residue was then purified by column chromatography (SiO2, EtOAc:hexane, 5:1)

Sources & evidence

ORD record
ord-7843396b041841328360401564825320
Source dataset
uspto-grants-2007_08
Patent number
US07253203B2

Reaction notes

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