1,2-Dimethoxyethane → HCID 58365686, compound

Participants

Reaction Steps

After a mixture of (−)-4-(2-methylpropionyl)-3-hydroxy-1-(4-bromophenyl)-5-(2-methoxyphenyl)-1,5-dihydropyrrole-2-one (0.10 g, 0.23 mmol), 3-thiophene-boronic acid (0.045 g, 0.35 mmol), tripotassium phosphate (0.148 g, 0.7 mmol), 1,2-dimethoxyethane (3 mL) and water (3 mL) was placed in a flask under nitrogen, 1,1′-Bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (0.019 g, 0.023 mmol) was added to the mixture, and the resulting mixture was stirred at reflux for 3 hours. To the reaction mixture was added water (50 mL), and the resulting mixture was extracted with dichloromethane (50 mL). The extract was washed with brine (50 mL), dried over anhydrous magnesium sulfate, and concentrated in vacuo. The resulting residue was purified on a silica gel column chromatography (methanol/chloroform). The resulting compound was triturated with ethyl acetate/n-hexane to give (−)-4-(2-methylpropionyl)-3-hydroxy-1-(4-thiophene-3-ylphenyl)-5-(2-methoxyphenyl)-1,5-dihydropyrrole-2-one (0.029 g, yield: 29%) as pale brown powder.

Provenance & Evidence