反应详情

Under a nitrogen atmosphere, 2-docosyloxy-9-fluorenone (250 mg, 0.50 mmol) prepared in the above-mentioned 1-1 was suspended in THF (2.5 ml), and dissolved at 50° C. 4-Chlorophenylmagnesium bromide solution was added dropwise, and the mixture was stirred. After completion of the reaction, the reaction mixture was cooled to room temperature, 1N hydrochloric acid was added dropwise thereto in a water bath until foaming stopped to quench the reaction. The mixture was extracted with chloroform (15 ml), and washed 3 times with 1N hydrochloric acid (5 ml), 3 times with 5% NaHCO3 solution (5 ml), and once with 20% NaCl solution (5 ml). The organic layer was dried over Na2SO4, and the solvent of the filtrate was evaporated. The obtained residue was isolated and purified by silica gel column chromatography, and precipitated with methanol (3 ml) to give 2-docosyloxy-9-(4-chlorophenyl)-9-fluorenol (270 mg, 0.44 mmol, 88%).

1. dissolutiondissolved at 50° C
2. customAfter completion of the reaction
3. customin a water bath until foaming stopped
4. customto quench
5. customthe reaction
6. extractionThe mixture was extracted with chloroform (15 ml)
7. washwashed 3 times with 1N hydrochloric acid (5 ml), 3 times with 5% NaHCO3 solution (5 ml)
8. dry with materialThe organic layer was dried over Na2SO4
9. customthe solvent of the filtrate was evaporated
10. customThe obtained residue was isolated
11. custompurified by silica gel column chromatography
12. customprecipitated with methanol (3 ml)