反应详情

To the solution of Intermediate 2A (26.7 g, 114 mmol) and trimethyl(trifluoromethyl)silane (16.9 g, 119 mmol) in anhydrous DME (112 mL) was added CsF (500 mg, 3.29 mmol). The reaction was stirred at rt for 16 h. To the mixture was added 4 N aq HCl (114 mL) and the reaction was stirred at rt for 2.5 h. The reaction was diluted with EtOAc (300 mL) and washed with water, sat'd aq NaHCO3, sat'd aq NaCl, dried over anhydrous MgSO4, filtered and concentrated to provide Intermediate 2B (42.5 g, 122%) as an oil. The crude product was used without further purification. LCMS Anal. Calc'd for C12H12F6O2 302.21, found [M−H] 301.2.

1. stirringthe reaction was stirred at rt for 2.5 h
2. washwashed with water
3. dry with materialdried over anhydrous MgSO4
4. filtrationfiltered
5. concentrationconcentrated