反应详情

温度

22 °C

7.05 g of butyllithium dissolved in 44 ml of hexane was slowly added in 5 minutes into 18.28 g of fluorene dissolved in 150 ml of anhydrous tetrahydrofuran at -50° C. under nitrogen protection. The mixture was stirred at -30~15° C. for 1 hour before it was cooled again to -40~-50° C. Then, 15.23 g of 1-chloro-2-(2-methoxyethoxy)-ethane was added in 5 minutes. The mixture was subsequently stirred for 2 hours while the temperature was gradually increased to 22° C. The main product in the solution was 9-(3,6-dioxaheptyl)-fluorene as detected by GC-MS. This solution was then cooled to -50° C., and 7.1 g of butyllithium dissolved in 44 ml of hexane was slowly added in 5 minutes under nitrogen protection. The mixture was stirred at -30 to -15° C. for 1 hour before it was cooled again to 40 to -50° C. Then, 15.30 g of 1-chloro-2-(2-methoxyethoxy)-ethane was added during 5 minutes. The mixture was subsequently stirred for 5 hours at 22° C., dispersed in water, and extracted with ether. The etheral solution was washed with water and brine, dried with magnesium sulfate, and evaporated. The residue was distilled to collect 37.1 g (91%) of colorless liquid at 160° C./0.08 mm Hg. MS (m/z): 370 (M+), 219, 191, 178, 89, 59.

1. temperaturewas cooled again to -40~-50° C
2. stirringThe mixture was subsequently stirred for 2 hours while the temperature
3. temperatureThis solution was then cooled to -50° C.
4. additionwas slowly added in 5 minutes under nitrogen protection
5. stirringThe mixture was stirred at -30 to -15° C. for 1 hour before it
6. temperaturewas cooled again to 40 to -50° C
7. stirringThe mixture was subsequently stirred for 5 hours at 22° C.
8. extractionextracted with ether
9. washThe etheral solution was washed with water and brine
10. dry with materialdried with magnesium sulfate
11. customevaporated
12. distillationThe residue was distilled
13. customto collect 37.1 g (91%) of colorless liquid at 160° C./0.08 mm Hg