Réaction #90157

Équation de réaction

9-Ethyl-6,6-dimethyl-11-oxo-8-(4-oxopiperidin-1-yl)-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile

2-ketopiperazine

sodium triacetoxy borohydride

→

title compound

Rendement 32.0%

9-Ethyl-6,6-dimethyl-11-oxo-8-[4-(3-oxo-piperazin-1-yl)-piperidin-1-yl]-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile

Rendement 32.0%

Solvants

THF

ethyl acetate

Conditions de réaction

Traitement

1. 1
   LavageThe organic layer was washed with 10% brine
2. 2
   Concentrationconcentrated under reduced pressure
3. 3
   AutreThe resulting residues were purified by silica gel column (dichloromethane/methanol=99/1 to 90/10)

Mode opératoire

9-Ethyl-6,6-dimethyl-11-oxo-8-(4-oxopiperidin-1-yl)-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile (30 mg) and 2-ketopiperazine (10 mg) were dissolved in THF (2 ml), added with sodium triacetoxy borohydride (30 mg), and the mixture was stirred at 30° C. for 6 hrs. The reaction mixture was diluted with ethyl acetate (20 ml). The organic layer was washed with 10% brine, and then concentrated under reduced pressure. The resulting residues were purified by silica gel column (dichloromethane/methanol=99/1 to 90/10) to obtain the title compound (11.5 mg, yield 32%).

Source