反应详情

A solution of 2-(trifluoromethyl)phenol (12.0 g, 74.0 mmol) in dichloromethane (49 mL) was cooled to 5° C., and N,N-diisopropylethylamine (25.9 mL, 148 mmol) and methoxymethyl chloride (8.43 mL, 111 mmol) were added dropwise, keeping the internal temperature ≦15° C. After stirring for 15 min at ambient temperature, the reaction mixture was diluted with MTBE (250 mL) and washed with 2N HCl (2×50 mL), water (50 mL), 2N NaOH (2×30 mL), water (30 mL), and brine (30 mL). The organic portion was dried (Na2SO4), filtered, and concentrated to give the title compound (14.1 g, 68.4 mmol, 92%) which was used without further purification. MS (DCI/NH3) m/z 207 (M+H)+.

1. customthe internal temperature ≦15° C
2. washwashed with 2N HCl (2×50 mL), water (50 mL), 2N NaOH (2×30 mL), water (30 mL), and brine (30 mL)
3. dry with materialThe organic portion was dried (Na2SO4)
4. filtrationfiltered
5. concentrationconcentrated