Sodium Carbonate → HCID 18385691, compound

HRID 2298274Notes

Reaction equation

HRID 2298274 reaction equation
Br[C:2]1[C:3](=[O:19])[C:4]([CH3:18])([CH3:17])[O:5][C:6]=1[C:7]1[CH:12]=[CH:11][C:10]([S:13]([CH3:16])(=[O:15])=[O:14])=[CH:9][CH:8]=1.C(=O)([O-])[O-].[Na+].[Na+].[CH2:26]1[O:34][C:33]2[CH:32]=[CH:31][C:30](B(O)O)=[CH:29][C:28]=2[O:27]1>C1(C)C=CC=CC=1.C(O)C.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>[CH3:17][C:4]1([CH3:18])[C:3](=[O:19])[C:2]([C:31]2[CH:30]=[CH:29][C:28]3[O:27][CH2:26][O:34][C:33]=3[CH:32]=2)=[C:6]([C:7]2[CH:12]=[CH:11][C:10]([S:13]([CH3:16])(=[O:15])=[O:14])=[CH:9][CH:8]=2)[O:5]1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 2734371(2H-1,3-benzodioxol-5-yl)boronic acidHCID 183857274-Bromo-2,2-dimethyl-5-[4-(methylsulfonyl)phenyl]-3(2h)-furanone

Product 1

HCID 18385691HCID 18385691, compoundYield 44.7%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolventHCID 1140TolueneSolvent

Conditions

Temperature
90 °C

Procedure

To a stirred solution of 4-bromo-2,2-dimethyl-5-{4-(methylsulfonyl)phenyl}-3(2H)-furanone (200 mg) in 30 ml toluene and 10 ml ethanol, were added 25 mg of tetrakis(triphenylphosphine)palladium(0), 10 ml of saturated aqueous sodium carbonate, and 150 mg of (3,4-methylenedioxy)benzeneboronic acid. The reaction solution was stirred at 90° C. for 12 hours. Then the solvent was removed under reduced pressure. The resulting residue was extracted with water and dichloromethane. The organic layer was concentrated in vacuo and the resulting residue was separated by column chromatography (hexane/ethylacetate) to yield 100 mg of 2,2-dimethyl-4-(3,4-methylenedioxyphenyl)-5-{4-(methylsulfonyl)phenyl}-3(2H)-furanone as a solid. mp: 178-179° C. NMR: δ1.60 (s, 6H), 3.07 (s, 3H), 5.99 (s, 2H), 6.74 (m, 2H), 6.84 (d, J=8.7 Hz, 1H), 7.87 (d, J=8.7 Hz, 2H), 7.94 (d, J=8.7 Hz, 2H). IR (cm−1): 1697, 1503, 1404, 1245, 1148, 959, 770.

Workup

  1. customThen the solvent was removed under reduced pressure
  2. extractionThe resulting residue was extracted with water and dichloromethane
  3. concentrationThe organic layer was concentrated in vacuo
  4. customthe resulting residue was separated by column chromatography (hexane/ethylacetate)

Sources & evidence

ORD record
ord-c36cbb7d596643a9aa9dd67781700ebf
Source dataset
uspto-grants-2002_12
Patent number
US06492416B1

Reaction notes

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