反应详情

ethyl 4-{[2-(tert-butoxycarbonyl)-5-(4-methylpiperazin-1-yl)phenyl](trifluoroacetyl)amino}piperidine-1-carboxylate (2.15 g, 3.960 mmol) was dissolved in dry dichloromethane (8 mL) under nitrogen atmosphere. A 4 M solution of HCl in dioxane (9.9 mL, 39.6 mmol, 10 eq) was then added dropwise and the mixture was stirred at room temperature. After 5 hours 5 more equivalents of HCl were added and the reaction was stirred at room temperature overnight. The mixture was evaporated to dryness and stripped twice with DCM. It was then taken up with DCM/dioxane 1:3 and slurried for 1 hour. The solid was filtered, washed with ether and dried under vacuum at 50° C. for 1 hour. 1.78 g of title compound were obtained as a beige powder (86% yield).

1. stirringthe reaction was stirred at room temperature overnight
2. customThe mixture was evaporated to dryness
3. filtrationThe solid was filtered
4. washwashed with ether
5. customdried under vacuum at 50° C. for 1 hour