反应详情

To a solution of tert-butyl 4-(tert-butoxycarbonylamino)-4-(3-(dimethylcarbamoyloxy)phenylcarbamoyl)piperidine-1-carboxylate from step A (0.141 g, 0.28 mmol) in MeOH (2 mL) was added HCl (4 N in dioxane, 0.21 mL, 0.84 mmol). The mixture was stirred at room temperature for 14 hours. Further eqivalents of HCl/dioxane were added at this time, and the mixture stirred for a further 24 hours at room temperature. The solvent was removed under vacuum to afford the title compound (0.084 g, 98%), which was carried on crude. MS (ES+) [M+H]+=307.

1. stirringthe mixture stirred for a further 24 hours at room temperature
2. customThe solvent was removed under vacuum