反应详情

A mixture of 5-(4-bromophenyl)-3-(1-hydroxymethyl-1-methylethyl)-4-(2-methoxyphenyl)-4,5-dihydro-1H-pyrrolo[3,4-c]pyrazole-6-one (0.15 g, 0.33 mmol), thiophene-3-yl boronic acid (0.063. g, 0.49 mmol), tripotassium phosphate (0.21 mg, 0.99 mmol), 1,2-Dimethoxyethane (3 mL) and water (0.6 mL) was placed in a flask under nitrogen. To the mixture was added 1,1′-Bis(diphenylphosphino)ferrocene-palladium(II) dichloride dichloromethane complex (0.027 mg, 0.033 mmol) and the resulting mixture was heated at reflux for 5 hours. After the reaction was completed, the reaction mixture was purified on a silica gel column chromatography (ethyl acetate/n-hexane). The resulting aimed compound was triturated with ethyl acetate and n-hexane to give 3-(1-hydroxymethyl-1-methylethyl)-4-(2-methoxyphenyl)-5-(4-thiophene-3-ylphenyl)-4,5-dihydro-1H-pyrrolo[3,4-c]pyrazole-6-one (0.038 g, yield: 25%) as colorless solid.

1. customwas placed in a flask under nitrogen
2. additionTo the mixture was added 1,1′-Bis(diphenylphosphino)ferrocene-palladium(II) dichloride dichloromethane complex (0.027 mg, 0.033 mmol)
3. temperaturethe resulting mixture was heated
4. temperatureat reflux for 5 hours
5. customthe reaction mixture was purified on a silica gel column chromatography (ethyl acetate/n-hexane)
6. customThe resulting aimed compound was triturated with ethyl acetate and n-hexane