反应详情

231 mg (0.2 mml) of tetrakis-(triphenylphosphine)palladium (0), 50 ml of toluene and 1.75 g (6.6 mmol) of methyl N-methyl-4-iodo-2-pyrrolecarboxylate were introduced into a three-necked flask and under a nitrogen stream and the mixture was stirred at room temperature for 20 minutes. 2.8 g (10 mmol) of 5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-anthrylboronic acid and 6.6 ml of an aqueous potassium carbonate solution (2N) were then added and the mixture was heated at reflux for 8 hours. The reaction medium was evaporated to dryness, taken up in water and ethyl ether, the organic phase decanted, dried over magnesium sulfate and evaporated. The residue was purified by chromatography on a silica column eluted with a mixture of dichloromethane and hexane (80/20). 840 mg (47%) of methyl N-methyl-4-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-anthryl)-2-pyrrolecarboxylate were obtained.

1. temperaturethe mixture was heated
2. temperatureat reflux for 8 hours
3. customThe reaction medium was evaporated to dryness
4. customethyl ether, the organic phase decanted
5. dry with materialdried over magnesium sulfate
6. customevaporated
7. customThe residue was purified by chromatography on a silica column
8. washeluted with a mixture of dichloromethane and hexane (80/20)