反应详情

5.7 g (22.1 mmol) of ethyl (S)-2-amino-3-(3′-methylaminobiphenyl-4-yl)propionate and 5.8 g (28.7 mmol) of 2-benzoylcyclohexanone are dissolved in 10 ml of anisole. 0.6 g of 10% palladium-on-charcoal are added and the reaction medium is then refluxed using a Dean-Stark apparatus for 16 h. The cooled reaction medium is filtered through celite, rinsed with ethyl acetate and concentrated. The residue obtained is purified by chromatography on a column of silica and eluted with a 7/3 heptane/ethyl acetate mixture. 5.9 g of desired product are isolated with a 49% yield.

1. temperaturethe reaction medium is then refluxed
2. customfor 16 h
3. customThe cooled reaction medium
4. filtrationis filtered through celite
5. washrinsed with ethyl acetate
6. concentrationconcentrated
7. customThe residue obtained
8. customis purified by chromatography on a column of silica
9. washeluted with a 7/3 heptane/ethyl acetate mixture