反应详情

To a solution of collidine (0.113 g) in THF (1 mL) cooled to −70° C. was added dropwise over 3 minutes tert-butyl lithium (1.7 M in pentane, 0.55 mL). The mixture was stirred for 5 minutes and then 1-cyclohexyl-4-(5-fluoro-2-methoxyphenyl)-4-methylpentan-2-one (Example 15) (0.095 g) in THF (0.5 mL) was added dropwise. After 10 minutes at −70° C., the reaction was quenched by addition of EtOH (0.2 mL) and warmed to room temperature. The mixture was diluted with EtOAc, washed with water, dried over sodium sulfate, filtered, and evaporated. The residue was fractionated by preparative layer chromatography (developer: methylene chloride-EtOAc (99:1)) followed by preparative layer chromatography (developer: hexanes-methylene chloride-EtOH (1:1:0.01)) to give the title compound as an oil (73 mg).

1. waitAfter 10 minutes at −70° C.
2. customthe reaction was quenched by addition of EtOH (0.2 mL)
3. additionThe mixture was diluted with EtOAc
4. washwashed with water
5. dry with materialdried over sodium sulfate
6. filtrationfiltered
7. customevaporated