Sodium hydride → HCID 18385687, compound

Participants

Reaction Steps

437 mg of 1-{3-methyl-4-(methylthio)phenyl}-2-(3-fluorophenyl)-ethanone in 50 ml dry THF was stirred with 67 mg of 60% oil dispersion of sodium hydride for an hour at 0° C., which was followed by dropwise addition of 0.8 ml α-bromoisobutyryl cyanide diluted with 25 ml THF. The reaction solution was slowly warmed to room temperature and was stirred overnight. Then the solvent was removed in vacuo and the resulting residue was extracted with 50 ml water and dichloromethane (50 ml×3). The organic layer was concentrated in vacuo and was purified by column chromatography (hexane/ethylacetate=6:1) to yield 312 mg of 2,2-dimethyl-4-(3-fluorophenyl)-5-{3-methyl-4-(methylthio)phenyl}-3(2H)-furanone. NMR: δ1.55 (s, 6H), 2.27 (s, 3H), 2.48 (s, 3H), 7.36 (m, 4H), 7.32 (m, 1H), 7.45 (m, 2H). IR 1694, 1601, 1385, 1260, 1192.

Provenance & Evidence