Sodium Carbonate → HCID 11485472, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 3-bromo-2-(4-(methylsulfonyl)phenyl)-1-oxa-spiro[4,4]non-2-en-4-one (77 mg) in 5 ml of toluene and 15 ml ethanol, were added 15 mg of tetrakis(triphenylphosphine)palladium(0), 5 ml of 2 M aqueous sodium carbonate solution, and 27 mg of benzeneboronic acid. Then the reaction solution was stirred at 90° C. for 12 hours. The reaction solvent was evaporated off under reduced pressure and the resulting residue was extracted with 20 ml water and dichloromethane (30 ml×1). The organic layer was concentrated in vacuo and the resulting crude product mixture was purified by column chromatography (hexane/ethylacetate) to obtain 57 mg of 2-{4-(methylsulfonyl)phenyl}-3-phenyl-1-oxa-spiro[4,4]non-2-en-4-one as a solid. mp: 184-185° C. NMR: δ2.09 (m, 6H), 2.17 (m, 2H), 3.06 (s, 3H), 7.26 (m, 2H), 7,35 (m, 3H), 7.81 (d, J=8.1 Hz, 2H), 7.92 (d, J=8.1 Hz, 2H). IR (cm−1): 2925, 1695, 1591, 1403, 1150, 771.

Provenance & Evidence