反应详情

To a solution of 5-(methylsulfonyl)-[1,1′-biphenyl]-2-carbaldehyde (1 g, 3.8 mmol) was added TMS-CF3 (1.0 g, 7.7 mmol) in THF (10 mL). The reaction was cooled to 0° C. to and TBAF (0.57 mL, 0.57 mmol) was added dropwise. The reaction mixture was stirred for 2 h, then 3 N HCl (2 mL) was added to the mixture and the reaction mixture was stirred for an additional 30 min. The mixture was extracted with ethyl acetate, washed with brine, dried over Na2SO4, filtered, and concentrated in vacuo. Purification on normal phase silica gel provided 2,2,2-trifluoro-1-(5-(methylsulfonyl)-[1,1′-biphenyl]-2-yl)ethanol as a white solid.

1. additionwas added dropwise
2. stirringthe reaction mixture was stirred for an additional 30 min
3. extractionThe mixture was extracted with ethyl acetate
4. washwashed with brine
5. dry with materialdried over Na2SO4
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customPurification on normal phase silica gel