反应详情

温度

-78 °C

A 2 M solution (10 ml) of lithium diisopropylamide in heptane-THF-ethylbenzene was added to tetrahydrofuran (20 ml) under argon atmosphere, and the mixture was cooled to −78° C. in a dry ice-acetone bath. To the resultant solution was added dropwise over 30 minutes a solution of 4,6-dimethyl-1-(1,2,3,4-tetrahydro-1-naphthyl-1H-pyrrolo[2,3-b]pyridine-3-carbonitrile (3.0 g, 10 mmol) in tetrahydrofuran (30 ml), and after completion of the dropwise addition, the reaction mixture was stirred at −78° C. for 30 minutes. Next, DMF (3.1 ml, 40 mmol) was added thereto, the dry ice-acetone bath was removed, and then the mixture was stirred at room temperature for 2 hours. The reaction mixture was distributed to ethyl acetate and water. The organic extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and the solvent was removed under vacuum. To the residue was added hexane, and the residue was finely crushed using a spatula. The solid material was collected by filtration and washed with hexane to give the title compound (yield (amount) 2.7 g, yield (rate) 82%).

1. additionafter completion of the dropwise addition
2. customthe dry ice-acetone bath was removed
3. stirringthe mixture was stirred at room temperature for 2 hours
4. extractionThe organic extract
5. washwas washed with saturated brine
6. dry with materialdried over anhydrous magnesium sulfate
7. customthe solvent was removed under vacuum
8. additionTo the residue was added hexane
9. customthe residue was finely crushed
10. filtrationThe solid material was collected by filtration
11. washwashed with hexane