Water → 4-[(2,4-dichlorophenyl)amino]-1-piperidin-1-yl-5,6-dihydropyridin-2(1H)-one

Participants

Reaction Steps

1,1′-bipiperidine-2, 4-dione (1,000 g, 4,739 mmol) and 2,4-dichloroaniline (0.921 g, 5.687 mmol) were dissolved in 2-methyltetrahydrofuran (10 ml) and the reaction mixture was boiled under reflux for 22 h whilst the water formed was removed using a Dean and Stark apparatus. Upon cooling to rt the product precipitated and was collected by filtration to yield a white solid (1.490 g, 92%).

Provenance & Evidence