反应详情

35 g of N-bromosuccinimide are added to a solution of 52 g of triphenylphosphine in 1.5 l of dioxane. After stirring the mixture for 1 hour, 9 g of 1-benzyl-1,5-dihydro-pyrrolo[3,2-c]pyridin-4-one in 200 ml of dioxane are added and the mixture is heated at reflux for 15 hours. After removal of the dioxane under reduced pressure, 100 ml of triethylamine are added to the residue and the whole is then concentrated in vacuo. Chromatography on silica gel (cyclohexane/ethyl acetate: 50/50) enables the expected product to be isolated.

1. temperaturethe mixture is heated
2. temperatureat reflux for 15 hours
3. customAfter removal of the dioxane under reduced pressure, 100 ml of triethylamine
4. additionare added to the residue
5. concentrationthe whole is then concentrated in vacuo
6. customto be isolated