反应详情

To a solution of (S)-4-(1-(1-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)piperidin-4-yl)-2-oxopyrrolidin-3-yloxy)-3-fluorobenzoic acid (0.040 g, 0.080 mmol) and pyrrolidine (0.028 g, 0.40 mmol) in DMF (1 mL) was added HTBU (0.060 g, 0.16 mmol) and the reaction was stirred overnight at ambient temperature. The reaction was diluted with EtOAc (20 mL) and washed with 1 N HCl (5 mL), 1 N NaOH (5 mL), and brine (5 mL), and the combined organic phases were dried over MgSO4, and concentrated under vacuum. The material was purified on silica, using EtOAc as eluent to yield (S)-1-(1-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)piperidin-4-yl)-3-(2-fluoro-4-(pyrrolidine-1-carbonyl)phenoxy)pyrrolidin-2-one (0.0026 g, 0.005 mmol, 6% yield). Mass spectrum (apci) m/z=555.0 (M+H).

1. washwashed with 1 N HCl (5 mL), 1 N NaOH (5 mL), and brine (5 mL)
2. dry with materialthe combined organic phases were dried over MgSO4
3. concentrationconcentrated under vacuum
4. customThe material was purified on silica