Sodium Carbonate → HCID 18385691, compound

Participants

Reaction Conditions

Reaction Steps

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.

Provenance & Evidence