反应详情

A solution of HCl in dioxane (4M, 30 mL) was added to a solution of tert-butyl 3-[1-(3-fluorophenyl)methylidene]piperidine-1-carboxylate (Intermediate 227, 2.38 g) in ether (30 mL) and the mixture was stirred at room temperature for 5 hours. The mixture was concentrated in vacuo and the residue was treated with ether. The solid was collected by filtration, washed with ether and dried under vacuum to give 3-[1-(3-fluorophenyl)methylidene]piperidine hydrochloride (1.64 g).

1. concentrationThe mixture was concentrated in vacuo
2. additionthe residue was treated with ether
3. filtrationThe solid was collected by filtration
4. washwashed with ether
5. customdried under vacuum